[strongSwan] marks on decrypted packets

Noel Kuntze noel at familie-kuntze.de
Mon Mar 23 19:06:22 CET 2015


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Hello,

Marks which are applied to the esp packet transfer over to the decrypted packet.
You can leverage this by using the policy module to find what esp packets belong
to what tunnel and marking them accordingly.
e.g.: iptables -t mangle -I INPUT -m policy --pol ipsec --dir in --reqid 42 -j MARK --set-mark 0xf00

Mit freundlichen Grüßen/Kind Regards,
Noel Kuntze

GPG Key ID: 0x63EC6658
Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658

Am 23.03.2015 um 19:03 schrieb SM K:
> Hi,
>
> If I had two tunnels to my strongswan server, is there a way to distinguish the packets coming out decrypted from the two tunnels via fw marks? I would like to handle the traffic coming out of the two (or more) tunnels differently in my netfilter hooks. Is there anything in the sk_buff?
>
> regards,
> sk
>
>
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