SYN Flood Protection on BLUE with Unifi Enviroment

Hi there. With Core 196 I’ve made the experience that a firewall rule stopped working as initially intended by me with SYN Flood Protection enabled.

It appeared that my Unifi devices in BLUE (access points, switches) could not connect towards a Raspberry Pi 5 running a flavour of the Unify Network Application in GREEN any more. The devices became offline in the Unifi Web UI; problem disappeared when switching SYN Flood Protection off.

If that is intended, fine, just to letting you know.

Please see this post (plus there are some others)

https://community.ipfire.org/t/syn-flood-protection-activates-automatically/13295

and this bug report

https://bugzilla.ipfire.org/show_bug.cgi?id=13854

2 Likes