[strongSwan-dev] ESP Sequence

Daniel Palomares palomaresdaniel at gmail.com
Fri Feb 3 15:09:48 CET 2012


Hi Martin,

Thanks for your reply!

Yes, I did have a look , and I did modify the replay state by re-using the
methods during the update_sa call.
I was just wondering if there is a way through ip xfrm or setkey or other,
to monitor the ESP sequence?

I mean, if I am an administrator and I wish to monitor the ESP counters,
how would I do?
When you run "ipsec statusall" could you find such information? and if not,
is there anyway then?

Thanks

Daniel


2012/2/3 Martin Willi <martin at strongswan.org>

> Hello Daniel,
>
> > how can you ask the kernel what is the value of the ESP sequence
> > counter at anytime?
>
> Have a look at the get_replay_state() function at [1], it gets the
> replay state from a kernel SA. We use it to adjust the replay state
> after updating addresses of an SA.
>
> Regards
> Martin
>
> [1]
> http://git.strongswan.org/?p=strongswan.git;a=blob;f=src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c#l1494
>
>
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