Strange Firewall rule processing

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gnomee

Newbie
Posts: 6
Karma: 0

Strange Firewall rule processing

« on: February 15, 2023, 02:49:49 pm »

I am really baffled by this. I have a firewall rule that sometimes gets missed, screenshots attached. What am I missing? Why does it sometimes endup with the standard floating rule "Default deny / state violation rule"?

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Demusman

Sr. Member
Posts: 304
Karma: 13

Re: Strange Firewall rule processing

« Reply #1 on: February 15, 2023, 03:18:41 pm »

What does "standard Floating rule" mean?

What interface is that rule on?
You shouldn't be using floating rules unless you absolutely have to.

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gnomee

Newbie
Posts: 6
Karma: 0

Re: Strange Firewall rule processing

« Reply #2 on: February 15, 2023, 03:22:14 pm »

It's the top "Automatically generated rules", notice it's "last match".

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chemlud

Hero Member
Posts: 2481
Karma: 112

Re: Strange Firewall rule processing

« Reply #3 on: February 15, 2023, 03:26:20 pm »

It is what it says: State violation. No state, no traffic.

Do a package capture and watch your "Nest" at work. Most likely it tries to reuse the tcp connection that is already closed and then starts a fresh session (passed).

« Last Edit: February 15, 2023, 03:34:26 pm by chemlud »

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chemlud
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gnomee

Newbie
Posts: 6
Karma: 0

Re: Strange Firewall rule processing

« Reply #4 on: February 15, 2023, 04:03:31 pm »

Indeed you are correct sir. Much appreciated.

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