611 lines
18 KiB
YAML
611 lines
18 KiB
YAML
---
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# ---
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# Remount Filesystem writable
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# ---
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- name: Remount "/ro/" writable
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shell: remountrw
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# ---
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# Install/Uodate git firewall repository
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# ---
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- name: Install/update firewall repository
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git:
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repo: '{{ git_firewall_repository.repo }}'
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dest: '{{ git_firewall_repository.dest }}'
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when: git_firewall_repository is defined and git_firewall_repository|length > 0
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# ---
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# Some Checks
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# ---
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- name: Check if file '/ro/etc/ipt-firewall/main_ipv4.conf' exists
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stat:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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register: main_ipv4_exists
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- name: Check if file '/ro/etc/ipt-firewall/main_ipv6.conf' exists
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stat:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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register: main_ipv6_exists
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- name: Check if file '/ro/etc/ipt-firewall/interfaces_ipv4.conf' exists
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stat:
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path: /ro/etc/ipt-firewall/interfaces_ipv4.conf
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register: interfaces_ipv4_exists
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- name: Check if file '/ro/etc/ipt-firewall/interfaces_ipv6.conf' exists
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stat:
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path: /ro/etc/ipt-firewall/interfaces_ipv6.conf
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register: interfaces_ipv6_exists
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# ---
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# Adjust some lines
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# ---
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- name: addjust line 'zoom_udp_ports' (IPv4)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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regexp: '^zoom_udp_ports='
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line: 'zoom_udp_ports="$standard_zoom_udp_ports"'
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when:
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- main_ipv4_exists.stat.exists
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notify:
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- Restart IPv4 Firewall
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- name: addjust line 'zoom_udp_ports' (IPv6)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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regexp: '^zoom_udp_ports='
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line: 'zoom_udp_ports="$standard_zoom_udp_ports"'
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when:
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- main_ipv6_exists.stat.exists
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notify:
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- Restart IPv6 Firewall
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- name: addjust line 'jitsi_udp_ports' (IPv4)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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regexp: '^jitsi_udp_ports='
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line: 'jitsi_udp_ports="$standard_jitsi_udp_ports"'
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when:
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- main_ipv4_exists.stat.exists
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notify:
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- Restart IPv4 Firewall
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- name: addjust line 'jitsi_udp_ports' (IPv6)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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regexp: '^jitsi_udp_ports='
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line: 'jitsi_udp_ports="$standard_jitsi_udp_ports"'
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when:
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- main_ipv6_exists.stat.exists
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notify:
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- Restart IPv6 Firewall
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- name: addjust line 'bigbluebutton_udp_ports' (IPv4)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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regexp: '^bigbluebutton_udp_ports='
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line: 'bigbluebutton_udp_ports="$standard_bigbluebutton_udp_ports"'
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when:
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- main_ipv4_exists.stat.exists
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notify:
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- Restart IPv4 Firewall
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- name: addjust line 'bigbluebutton_udp_ports' (IPv6)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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regexp: '^bigbluebutton_udp_ports='
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line: 'bigbluebutton_udp_ports="$standard_bigbluebutton_udp_ports"'
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when:
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- main_ipv6_exists.stat.exists
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notify:
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- Restart IPv6 Firewall
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- name: addjust line 'adjust_kernel_parameters' (IPv6)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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regexp: '^adjust_kernel_parameters='
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line: '#adjust6_kernel_parameters=true'
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when:
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- main_ipv6_exists.stat.exists
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notify:
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- Restart IPv6 Firewall
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- name: addjust line 'protect_against_several_attack' (IPv6)
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lineinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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regexp: '^protect_against_several_attacks='
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line: '#protect6_against_several_attacks=true'
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when:
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- main_ipv6_exists.stat.exists
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notify:
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- Restart IPv6 Firewall
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# ---
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# Block Routers
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# ---
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- name: Check if String 'drop_syn_flood..' (IPv4) is present
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shell: grep -q -E "^#?drop_syn_flood=" /ro/etc/ipt-firewall/main_ipv4.conf
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register: drop_syn_flood_ipv4_present
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when: main_ipv4_exists.stat.exists
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failed_when: "drop_syn_flood_ipv4_present.rc > 1"
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changed_when: "drop_syn_flood_ipv4_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv4.conf' (drop_syn_flood)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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insertafter: '^#?\s*protect_against_several_attacks=true'
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block: |
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# Protection against syn-flooding
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#
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#drop_syn_flood=false
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# - I have to say that fragments scare me more than anything.
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# - Sending lots of non-first fragments was what allowed Jolt2 to effectively "drown"
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# - Firewall-1. Fragments can be overlapped, and the subsequent interpretation of such
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# - fragments is very OS-dependent (see this paper for details).
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# - I am not going to trust any fragments.
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# - Log fragments just to see if we get any, and deny them too
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# -
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# - !! 'drop_fragments' does not work within telekom mobile connections !!
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# -
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#drop_fragments=true
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# drop new packages without syn flag
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#
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#drop_new_not_sync=true
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# drop invalid packages
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#
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#drop_invalid_state=true
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# drop packages with unusal flags
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#
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#drop_invalid_flags=true
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# Refuse private addresses on extern interfaces
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#
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# Refuse packets claiming to be from a
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# Class A private network
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# Class B private network
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# Class C private network
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# loopback interface
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# Class D multicast address
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# Class E reserved IP address
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# broadcast address
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#drop_spoofed=true
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# Don't allow spoofing from that server
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#
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#drop_spoofed_out=true
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# Refusing packets claiming to be to the loopback interface protects against
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# source quench, whereby a machine can be told to slow itself down by an icmp source
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# quench to the loopback.
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#drop_ext_to_lo=true
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marker: "# Marker set by modify-ipt-gateway.yml (drop_syn_flood)"
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when:
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- main_ipv4_exists.stat.exists
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- drop_syn_flood_ipv4_present is changed
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- name: Check if String 'drop6_syn_flood..' (IPv6) is present
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shell: grep -q -E "^#?drop6_syn_flood=" /ro/etc/ipt-firewall/main_ipv6.conf
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register: drop6_syn_flood_ipv6_present
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when: main_ipv6_exists.stat.exists
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failed_when: "drop6_syn_flood_ipv6_present.rc > 1"
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changed_when: "drop6_syn_flood_ipv6_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv6.conf' (drop6_syn_flood)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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insertafter: '^#?\s*protect6_against_several_attacks=true'
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block: |
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# Protection against syn-flooding
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#
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#drop6_syn_flood=false
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# drop new packages without syn flag
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#
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#drop6_new_not_sync=true
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# drop invalid packages
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#
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#drop6_invalid_state=true
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# drop packages with unusal flags
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#
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#drop6_invalid_flags=true
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# Refuse spoofed packets pretending to be from your IP address.
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#
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#drop6_from_own_ip=true
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# Refuse private addresses on extern interfaces
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#
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#drop6_spoofed=true
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marker: "# Marker set by modify-ipt-gateway.yml (drop6_syn_flood)"
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when:
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- main_ipv6_exists.stat.exists
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- drop6_syn_flood_ipv6_present is changed
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# ---
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# Block UDP/TCP Ports out
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# ---
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- name: Check if String 'block_udp_extern_out_ports..' (IPv4) is present
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shell: grep -q -E "^block_udp_extern_out_ports=" /ro/etc/ipt-firewall/main_ipv4.conf
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register: block_udp_extern_out_ports_ipv4_present
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when: main_ipv4_exists.stat.exists
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failed_when: "block_udp_extern_out_ports_ipv4_present.rc > 1"
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changed_when: "block_udp_extern_out_ports_ipv4_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv4.conf' (block_udp_extern_out_ports)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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insertafter: '^#?\s*block_upnp_traffic_out'
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block: |
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# =============
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# --- Block UDP Ports out
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# =============
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# - UDP Ports to block (only extern out)
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# -
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# - Comma separated list of udp ports
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# -
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block_udp_extern_out_ports=""
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# =============
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# --- Block TCP Ports out
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# =============
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# - TCP Ports to block (only extern out)
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# -
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# - Comma separated list of tcp ports
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# -
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block_tcp_extern_out_ports=""
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marker: "# Marker set by modify-ipt-gateway.yml (block_udp_extern_out_ports)"
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when:
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- main_ipv4_exists.stat.exists
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- block_udp_extern_out_ports_ipv4_present is changed
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- name: Check if String 'block_udp_extern_out_ports..' (IPv6) is present
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shell: grep -q -E "^block_udp_extern_out_ports=" /ro/etc/ipt-firewall/main_ipv6.conf
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register: block_udp_extern_out_ports_ipv6_present
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when: main_ipv6_exists.stat.exists
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failed_when: "block_udp_extern_out_ports_ipv6_present.rc > 1"
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changed_when: "block_udp_extern_out_ports_ipv6_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv6.conf' (block_udp_extern_out_ports)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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insertafter: '^#?\s*block_upnp_traffic_out'
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block: |
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# =============
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# --- Block UDP Ports out
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# =============
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# - UDP Ports to block (only extern out)
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# -
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# - Comma separated list of udp ports
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# -
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block_udp_extern_out_ports=""
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# =============
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# --- Block TCP Ports out
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# =============
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# - TCP Ports to block (only extern out)
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# -
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# - Comma separated list of tcp ports
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# -
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block_tcp_extern_out_ports=""
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marker: "# Marker set by modify-ipt-gateway.yml (block_udp_extern_out_ports)"
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when:
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- main_ipv6_exists.stat.exists
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- block_udp_extern_out_ports_ipv6_present is changed
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# ---
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# jitsi video conference service
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# ---
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- name: Check if String 'jitsi_tcp_ports=..' (IPv4) is present
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shell: grep -q -E "^jitsi_tcp_ports=" /ro/etc/ipt-firewall/main_ipv4.conf
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register: jitsi_service_ipv4_present
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when: main_ipv4_exists.stat.exists
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failed_when: "jitsi_service_ipv4_present.rc > 1"
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changed_when: "jitsi_service_ipv4_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv4.conf' (jitsi service)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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insertafter: '^#?\s*mumble_ports'
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block: |
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# ======
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# - Jitsi Video Conference Service
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# ======
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# - Jitsi Video Conference Service Gateway
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# -
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# - NOT YET IMPLEMENTED
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# -
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local_jitsi_video_conference_service=false
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# - Jitsi Video Conference Service Ports
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# -
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# - TCP 80: Webinterface.
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# - TCP 443: Webinterface (SSL)
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# -
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# - UDP 10000-20000: Virtual Media for Remote Console
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# -
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jitsi_tcp_ports="$standard_jitsi_tcp_ports"
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jitsi_udp_ports="$standard_jitsi_udp_port_range"
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marker: "# Marker set by modify-ipt-gateway.yml (jitsi service)"
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when:
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- main_ipv4_exists.stat.exists
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- jitsi_service_ipv4_present is changed
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- name: Check if String 'jitsi_tcp_ports=..' (IPv6) is present
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shell: grep -q -E "^jitsi_tcp_ports=" /ro/etc/ipt-firewall/main_ipv6.conf
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register: jitsi_service_ipv6_present
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when: main_ipv6_exists.stat.exists
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failed_when: "jitsi_service_ipv6_present.rc > 1"
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changed_when: "jitsi_service_ipv6_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv6.conf' (jitsi service)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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insertafter: '^#?\s*mumble_ports'
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block: |
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# ======
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# - Jitsi Video Conference Service
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# ======
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# - Jitsi Video Conference Service Gateway
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# -
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# - NOT YET IMPLEMENTED
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# -
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local_jitsi_video_conference_service=false
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# - Jitsi Video Conference Service Ports
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# -
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# - TCP 80: Webinterface.
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# - TCP 443: Webinterface (SSL)
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# -
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# - UDP 10000-20000: Virtual Media for Remote Console
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# -
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jitsi_tcp_ports="$standard_jitsi_tcp_ports"
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jitsi_udp_ports="$standard_jitsi_udp_port_range"
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marker: "# Marker set by modify-ipt-gateway.yml (jitsi service)"
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when:
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- main_ipv6_exists.stat.exists
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- jitsi_service_ipv6_present is changed
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# ---
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# TURN Server (Stun Server) (for Nextcloud 'talk' app)
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# ---
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- name: Check if String 'nc_turn_ports=..' (IPv4) is present
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shell: grep -q -E "^nc_turn_ports=" /ro/etc/ipt-firewall/main_ipv4.conf
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register: nc_turn_service_ipv4_present
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when: main_ipv4_exists.stat.exists
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failed_when: "nc_turn_service_ipv4_present.rc > 1"
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changed_when: "nc_turn_service_ipv4_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv4.conf' (nc's turn service)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv4.conf
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insertafter: '^#?\s*jitsi_udp_ports'
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block: |
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# ======
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# - TURN Server (Stun Server) (for Nextcloud 'talk' app)
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# ======
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# - TURN Server (Stun Server) (for Nextcloud 'talk' app)
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# -
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# - NOT YET IMPLEMENTED
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# -
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local_nc_turn_service=""
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# - Ports used by local TURN Server (Stun Server)
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# -
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# - comma separated list
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# -
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nc_turn_ports="$standard_turn_service_ports"
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nc_turn_udp_ports="$standard_turn_service_udp_ports"
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marker: "# Marker set by modify-ipt-gateway.yml (nc's turn service)"
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when:
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- main_ipv4_exists.stat.exists
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- nc_turn_service_ipv4_present is changed
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- name: Check if String 'nc_turn_ports=..' (IPv6) is present
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shell: grep -q -E "^nc_turn_ports=" /ro/etc/ipt-firewall/main_ipv6.conf
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register: nc_turn_service_ipv6_present
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when: main_ipv6_exists.stat.exists
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failed_when: "nc_turn_service_ipv6_present.rc > 1"
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changed_when: "nc_turn_service_ipv6_present.rc > 0"
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- name: Adjust file '/ro/etc/ipt-firewall/main_ipv6.conf' (jitsi service)
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blockinfile:
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path: /ro/etc/ipt-firewall/main_ipv6.conf
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insertafter: '^#?\s*jitsi_udp_ports'
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block: |
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# ======
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# - TURN Server (Stun Server) (for Nextcloud 'talk' app)
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# ======
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# - TURN Server (Stun Server) (for Nextcloud 'talk' app)
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# -
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# - NOT YET IMPLEMENTED
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# -
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local_nc_turn_service=""
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# - Ports used by local TURN Server (Stun Server)
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# -
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# - comma separated list
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# -
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nc_turn_ports="$standard_turn_service_ports"
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nc_turn_udp_ports="$standard_turn_service_udp_ports"
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marker: "# Marker set by modify-ipt-gateway.yml (jitsi service)"
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when:
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- main_ipv6_exists.stat.exists
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- nc_turn_service_ipv6_present is changed
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# ---
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# Remove Marker set by blockinfile
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# ---
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- name: Remove marker IPv4 (main_ipv4.conf)
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replace :
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path: /ro/etc/ipt-firewall/main_ipv4.conf
|
|
regexp: "^# Marker set by modify-ipt-gateway.yml.*$"
|
|
replace: ""
|
|
register: marker_ipv4_removed
|
|
#failed_when: "marker_ipv4_removed.rc > 1"
|
|
#changed_when: "marker_ipv4_removed.rc < 1"
|
|
when:
|
|
- main_ipv4_exists.stat.exists
|
|
|
|
- name: Remove marker IPv6 (main_ipv6.conf)
|
|
replace :
|
|
path: /ro/etc/ipt-firewall/main_ipv6.conf
|
|
regexp: "^# Marker set by modify-ipt-gateway.yml.*$"
|
|
replace: ""
|
|
register: marker_ipv6_removed
|
|
#failed_when: "marker_ipv6_removed.rc > 1"
|
|
#changed_when: "marker_ipv6_removed.rc < 1"
|
|
when:
|
|
- main_ipv6_exists.stat.exists
|
|
|
|
- name: Remove marker IPv4 (interfaces_ipv4.conf)
|
|
replace :
|
|
path: /ro/etc/ipt-firewall/interfaces_ipv4.conf
|
|
regexp: "^# Marker set by modify-ipt-gateway.yml.*$"
|
|
replace: ""
|
|
register: marker_ipv4_removed
|
|
#failed_when: "marker_ipv4_removed.rc > 1"
|
|
#changed_when: "marker_ipv4_removed.rc < 1"
|
|
when:
|
|
- interfaces_ipv4_exists.stat.exists
|
|
|
|
- name: Remove marker IPv6 (interfaces_ipv6.conf)
|
|
replace :
|
|
path: /ro/etc/ipt-firewall/interfaces_ipv6.conf
|
|
regexp: "^# Marker set by modify-ipt-gateway.yml.*$"
|
|
replace: ""
|
|
register: marker_ipv6_removed
|
|
#failed_when: "marker_ipv6_removed.rc > 1"
|
|
#changed_when: "marker_ipv6_removed.rc < 1"
|
|
when:
|
|
- interfaces_ipv6_exists.stat.exists
|
|
|
|
# ---
|
|
# Confiuration Files
|
|
# ---
|
|
|
|
- name: Check if configuration files are latest
|
|
shell: 'diff {{ git_firewall_repository.dest }}/conf/{{ item }} /ro/etc/ipt-firewall/{{ item }} > /dev/null 2>&1'
|
|
changed_when: "diff_script_output.rc > 0"
|
|
# diff_output.rc
|
|
# 0 -> unchanged
|
|
# 1 -> changed
|
|
# 2 -> not present
|
|
failed_when: "diff_script_output.rc > 2"
|
|
when: (git_firewall_repository is defined) and (git_firewall_repository|length > 0)
|
|
loop:
|
|
- default_ports.conf
|
|
- default_ipv4.conf
|
|
- default_ipv6.conf
|
|
- default_basic_behavior.conf
|
|
- include_functions.conf
|
|
- load_modules_ipv4.conf
|
|
- load_modules_ipv6.conf
|
|
- logging_ipv4.conf
|
|
- logging_ipv6.conf
|
|
- post_decalrations.conf
|
|
register: diff_script_output
|
|
|
|
- name: Ensure configuration files are latest
|
|
command: cp {{ git_firewall_repository.dest }}/conf/{{ item }} /ro/etc/ipt-firewall/{{ item }}
|
|
loop:
|
|
- default_ports.conf
|
|
- default_ipv4.conf
|
|
- default_ipv6.conf
|
|
- default_basic_behavior.conf
|
|
- include_functions.conf
|
|
- load_modules_ipv4.conf
|
|
- load_modules_ipv6.conf
|
|
- logging_ipv4.conf
|
|
- logging_ipv6.conf
|
|
- post_decalrations.conf
|
|
when:
|
|
- (git_firewall_repository is defined) and (git_firewall_repository|length > 0)
|
|
- diff_script_output.changed
|
|
notify:
|
|
- Restart IPv4 Firewall
|
|
- Restart IPv6 Firewall
|
|
|
|
# ---
|
|
# Firewall scripts
|
|
# ---
|
|
|
|
- name: Check if firewall scripts are latest
|
|
shell: 'diff {{ git_firewall_repository.dest }}/{{ item }} /ro/usr/local/sbin/{{ item }} > /dev/null 2>&1'
|
|
changed_when: "diff_script_output.rc > 0"
|
|
# diff_output.rc
|
|
# 0 -> unchanged
|
|
# 1 -> changed
|
|
# 2 -> not present
|
|
failed_when: "diff_script_output.rc > 2"
|
|
when: (git_firewall_repository is defined) and (git_firewall_repository|length > 0)
|
|
loop:
|
|
- ipt-firewall-gateway
|
|
- ip6t-firewall-gateway
|
|
register: diff_script_output
|
|
|
|
- name: Ensure firewall scripts are latest
|
|
command: cp {{ git_firewall_repository.dest }}/{{ item }} /ro/usr/local/sbin/{{ item }}
|
|
loop:
|
|
- ipt-firewall-gateway
|
|
- ip6t-firewall-gateway
|
|
when:
|
|
- (git_firewall_repository is defined) and (git_firewall_repository|length > 0)
|
|
- diff_script_output.changed
|
|
notify:
|
|
- Restart IPv4 Firewall
|
|
- Restart IPv6 Firewall
|
|
|
|
# ---
|
|
# Remount Filesystem readonly
|
|
# ---
|
|
|
|
- name: Remount "/ro/" readonly
|
|
shell: remountro
|
|
register: remountro_cmd
|
|
failed_when: remountro_cmd.rc != 0 and remountro_cmd.rc != 32
|