Re: [bitfolk] Flapping alerts for TCP services, SYN flooding

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Author: Andy Smith
Date:  
To: users
Subject: Re: [bitfolk] Flapping alerts for TCP services, SYN flooding

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gpg: Signature made Fri Nov 1 14:40:40 2019 UTC
gpg: using DSA key 2099B64CBF15490B
gpg: Good signature from "Andy Smith <andy@strugglers.net>" [unknown]
gpg: aka "Andrew James Smith <andy@strugglers.net>" [unknown]
gpg: aka "Andy Smith (UKUUG) <andy.smith@ukuug.org>" [unknown]
gpg: aka "Andy Smith (BitFolk Ltd.) <andy@bitfolk.com>" [unknown]
gpg: aka "Andy Smith (Linux User Groups UK) <andy@lug.org.uk>" [unknown]
gpg: aka "Andy Smith (Cernio Technology Cooperative) <andy.smith@cernio.com>" [unknown]
On Fri, Nov 01, 2019 at 02:08:24PM +0000, Andy Smith wrote:
> Those of you who are seeing alerts, do you have SYN cookies enabled
> and if not, does enabling them stop it happening?


In a support ticket I had a confirmation that they did not have SYN
cookies enabled, and enabling them made the problem [of the SYN queue
filling] go away.

Cheers,
Andy

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