Strange IPSEC traffic

Tue Nov 14 18:10:08 UTC 2023

* Shawn L [Mon 13 Nov 2023, 18:12 CET]:
>Is anyone else seeing a lot of 'strange' IPSEC traffic?

This mail server running FreeBSD did: (timestamps in CET, UTC+1)

Nov 10 00:58:55 mailserver kernel: ipsec_common_input: no key association found for SA 77.174.253.13/77b40000/50
Nov 10 01:26:09 mailserver kernel: ipsec_common_input: no key association found for SA 77.174.253.13/03e80000/50
Nov 11 10:15:22 mailserver kernel: ipsec_common_input: no key association found for SA 77.174.253.13/62861b0e/50
Nov 11 14:35:34 mailserver kernel: ipsec_common_input: no key association found for SA 77.174.253.13/048b828c/50
Nov 13 20:00:53 mailserver kernel: ipsec_common_input: no key association found for SA 77.174.253.13/a5ff0000/50

I don't remember ever seeing these log messages before.

	-- Niels.