From 54515eb744b4db6797ec289883eb925847215cb2 Mon Sep 17 00:00:00 2001 From: Niklas Yann Wettengel Date: Wed, 7 Mar 2018 01:17:55 +0100 Subject: clamp mtu --- roles/configure_iptables/templates/ip6tables.rules | 6 ++++++ roles/configure_iptables/templates/iptables.rules | 6 ++++++ 2 files changed, 12 insertions(+) (limited to 'roles/configure_iptables') diff --git a/roles/configure_iptables/templates/ip6tables.rules b/roles/configure_iptables/templates/ip6tables.rules index 054946c..5bb058c 100644 --- a/roles/configure_iptables/templates/ip6tables.rules +++ b/roles/configure_iptables/templates/ip6tables.rules @@ -83,6 +83,12 @@ COMMIT {% endfor %} {% endif %} -A FORWARD -o {{ ansible_default_ipv6.interface }} -j REJECT +{% if 'ffrl_uplink' in group_names %} +{% for peer in ffrl_peers %} +iptables -A FORWARD -i {{ peer.name }} -d 2a03:2260:1016::/48 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu +iptables -A FORWARD -o {{ peer.name }} -s 2a03:2260:1016::/48 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu +{% endfor %} +{% endif %} COMMIT *nat :PREROUTING ACCEPT [0:0] diff --git a/roles/configure_iptables/templates/iptables.rules b/roles/configure_iptables/templates/iptables.rules index 3519924..3c750f9 100644 --- a/roles/configure_iptables/templates/iptables.rules +++ b/roles/configure_iptables/templates/iptables.rules @@ -69,6 +69,12 @@ COMMIT {% endfor %} {% endif %} -A FORWARD -o {{ ansible_default_ipv4.interface }} -j REJECT +{% if 'ffrl_uplink' in group_names %} +{% for peer in ffrl_peers %} +iptables -A FORWARD -i {{ peer.name }} -d 10.222.0.0/16 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu +iptables -A FORWARD -o {{ peer.name }} -s 10.222.0.0/16 -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu +{% endfor %} +{% endif %} COMMIT *nat -- cgit v1.2.3-54-g00ecf