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exip_ip: add rule to avoid VPN loops

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Bastian Mäuser 2021-08-03 11:37:19 +02:00 committed by Markus Hauschild
parent 44fc0e626e
commit 29cc08a8be
3 changed files with 7 additions and 2 deletions
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1
.gitignore vendored
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@ -2,3 +2,4 @@
__pycache__
site.retry
*.pyc
ff-ansible.code-workspace

4
roles/exit_ip/templates/rules.v4.j2
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@ -8,8 +8,10 @@
COMMIT
*filter
:INPUT ACCEPT [1124:131621]
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j LOG --log-prefix "vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j LOG --log-prefix "fastd-vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j REJECT
-A INPUT -p udp -i br-{{ site_code }} --dport {{ mesh_wg_port }} -j LOG --log-prefix "wg-vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -i br-{{ site_code }} --dport {{ mesh_wg_port }} -j REJECT
:FORWARD ACCEPT [0:0]
-A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
:OUTPUT ACCEPT [1151:175226]

4
roles/exit_ip/templates/rules.v6.j2
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@ -1,8 +1,10 @@
# {{ ansible_managed }}
*filter
:INPUT ACCEPT [0:0]
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j LOG --log-prefix "vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j LOG --log-prefix "fastd-vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -m multiport -i br-{{ site_code }} --destination-ports {{ fastd_port }}:{{ fastd_port + (fastd_instances-1) }} -j REJECT
-A INPUT -p udp -i br-{{ site_code }} --dport {{ mesh_wg_port }} -j LOG --log-prefix "wg-vpn-int-loop-" -m limit --limit 5/min
-A INPUT -p udp -i br-{{ site_code }} --dport {{ mesh_wg_port }} -j REJECT
:FORWARD ACCEPT [0:0]
-A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
:OUTPUT ACCEPT [0:0]