diff options
| author | Guilhem Moulin <guilhem@fripost.org> | 2016-05-20 01:19:27 +0200 |
|---|---|---|
| committer | Guilhem Moulin <guilhem@fripost.org> | 2016-05-22 17:53:52 +0200 |
| commit | 3fafa03aeb3640a86d9cd8c639d085df6a8d085d (patch) | |
| tree | ba1bc3707aa20e3a80c08b1dd2726524333b3d21 /roles/common/templates/etc/iptables/services.j2 | |
| parent | 1bdc6a1202f9cabea5f907c4213f2a6f902443b6 (diff) | |
Set up IPSec tunnels between each pair of hosts.
We use a dedicated, non-routable, IPv4 subnet for IPSec. Furthermore
the subnet is nullrouted in the absence of xfrm lookup (i.e., when there
is no matching IPSec Security Association) to avoid data leaks.
Each host is associated with an IP in that subnet (thus only reachble
within that subnet, either by the host itself or by its IPSec peers).
The peers authenticate each other using RSA public key authentication.
Kernel traps are used to ensure that connections are only established
when traffic is detected between the peers; after 30m of inactivity
(this value needs to be less than the rekeying period) the connection is
brought down and a kernel trap is installed.
Diffstat (limited to 'roles/common/templates/etc/iptables/services.j2')
| -rw-r--r-- | roles/common/templates/etc/iptables/services.j2 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2 index 303fa06..6bd2533 100644 --- a/roles/common/templates/etc/iptables/services.j2 +++ b/roles/common/templates/etc/iptables/services.j2 @@ -4,6 +4,13 @@ # direction protocol destination port source port # (in|out|inout)[46]? (tcp|udp|..) (port|port:port|port,port) (port|port:port|port,port) +{% if groups.all | length > 1 %} +inout4 udp 500 500 # ISAKMP +{% if groups.NATed | length > 0 %} +inout4 udp 4500 4500 # IPSec NAT Traversal +{% endif %} +{% endif %} + out tcp 80,443 # HTTP/HTTPS out tcp 9418 # GIT out udp 53 # DNS |