diff --git a/ip6t-firewall-gateway b/ip6t-firewall-gateway
index cd85a26..16d376c 100755
--- a/ip6t-firewall-gateway
+++ b/ip6t-firewall-gateway
@@ -3214,20 +3214,20 @@ fi
 echononl "\t\tSkype for Business Online und Microsoft Teams"
 
 if $allow_ms_skype_teams_out \
-      && ( [[ ${#ms_skype_teams_udp6_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp_port_arr[@]} -gt 0 ]] ) \
+      && ( [[ ${#ms_skype_teams_udp6_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp6_port_arr[@]} -gt 0 ]] ) \
       || [[ ${#ms_skype_teams_tcp_port_arr[@]} -gt 0 ]] ; then
 
    for _dev in ${ext_if_arr[@]} ; do
 
-      if [[ ${#ms_skype_teams_udp6_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp_port_arr[@]} -gt 0 ]] ; then
+      if [[ ${#ms_skype_teams_udp6_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp6_port_arr[@]} -gt 0 ]] ; then
 
          for _host in ${ms_skype_teams_udp6_host_arr[@]} ; do
 
-            for _port in ${ms_skype_teams_udp_port_arr[@]} ; do
+            for _port in ${ms_skype_teams_udp6_port_arr[@]} ; do
 
-               $ip6t -A OUTPUT -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+               $ip6t -A OUTPUT -o $_dev -p udp -d $_host --dport $_port -m conntrack --ctstate NEW -j ACCEPT
                if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then
-                  $ip6t -A FORWARD -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+                  $ip6t -A FORWARD -o $_dev -p udp -d $_host --dport $_port -m conntrack --ctstate NEW -j ACCEPT
                fi
             done
 
@@ -3236,11 +3236,12 @@ if $allow_ms_skype_teams_out \
 
       if [[ ${#ms_skype_teams_tcp_port_arr[@]} -gt 0 ]] ; then
 
+
          for _port in ${ms_skype_teams_tcp_port_arr[@]} ; do
 
-            $ip6t -A OUTPUT -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+            $ip6t -A OUTPUT -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT
             if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then
-               $ip6t -A FORWARD -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+               $ip6t -A FORWARD -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT
             fi
          done
 
diff --git a/ipt-firewall-gateway b/ipt-firewall-gateway
index 8fcaeb8..dc3827c 100755
--- a/ipt-firewall-gateway
+++ b/ipt-firewall-gateway
@@ -3967,20 +3967,20 @@ fi
 echononl "\t\tSkype for Business Online und Microsoft Teams"
 
 if $allow_ms_skype_teams_out \
-      && ( [[ ${#ms_skype_teams_udp4_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp_port_arr[@]} -gt 0 ]] ) \
+      && ( [[ ${#ms_skype_teams_udp4_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp4_port_arr[@]} -gt 0 ]] ) \
       || [[ ${#ms_skype_teams_tcp_port_arr[@]} -gt 0 ]] ; then
 
    for _dev in ${ext_if_arr[@]} ; do
 
-      if [[ ${#ms_skype_teams_udp4_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp_port_arr[@]} -gt 0 ]] ; then
+      if [[ ${#ms_skype_teams_udp4_host_arr[@]} -gt 0 ]] && [[ ${#ms_skype_teams_udp4_port_arr[@]} -gt 0 ]] ; then
 
          for _host in ${ms_skype_teams_udp4_host_arr[@]} ; do
 
-            for _port in ${ms_skype_teams_udp_port_arr[@]} ; do
+            for _port in ${ms_skype_teams_udp4_port_arr[@]} ; do
 
-               $ipt -A OUTPUT -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+               $ipt -A OUTPUT -o $_dev -p udp -d $_host --dport $_port -m conntrack --ctstate NEW -j ACCEPT
                if $kernel_activate_forwarding && ! $permit_local_net_to_inet ; then
-                  $ipt -A FORWARD -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+                  $ipt -A FORWARD -o $_dev -p udp -d $_host --dport $_port -m conntrack --ctstate NEW -j ACCEPT
                fi
             done
 
@@ -3991,9 +3991,9 @@ if $allow_ms_skype_teams_out \
 
          for _port in ${ms_skype_teams_tcp_port_arr[@]} ; do
 
-            $ipt -A OUTPUT -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+            $ipt -A OUTPUT -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT
             if $kernel_activate_forwarding && ! $permit_local_net_to_inet ; then
-               $ipt -A FORWARD -o $_dev -p udp -d $_host -dport $_port -m conntrack --ctstate NEW -j ACCEPT
+               $ipt -A FORWARD -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT
             fi
          done