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Re: Bug in TCP/IP stack in 2.2.17? (fwd)

To: kuznet@xxxxxxxxxxxxx
Subject: Re: Bug in TCP/IP stack in 2.2.17? (fwd)
From: Alexander Stanich <astanich@xxxxxxxxxxxxxxxxx>
Date: Fri, 10 Nov 2000 12:56:35 -0500
Cc: patrik@xxxxxx, netdev@xxxxxxxxxxx
Organization: Reuters Health
References: <200011101749.UAA23246@xxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
bit of a mess, yes ;^p

kuznet@xxxxxxxxxxxxx wrote:

> Hello!
>
> > the firewall happens to be doing the handshaking on all incoming TCP 
> > connections, been the victim
> > of several TCP/SYN flood attacks. maybe this is where it flakes?  the 
> > firewall intercepts the
> > client SYN, send the SYN/ACK, waits for the client ACK.  if it gets the ACK 
> > it's supposed to open
> > up a new connection to the server.
>
> I heard that such beasts exist, but believed that it is rather joke.
> Hmm... not a joke, indeed. Bad joke to be more exact. 8)
>
> Apparently, it tries to relay options received in server's SYN-ACK.
> It is too late to drink mineral water, when kidneys dilapidated. 8)8)
>
> Alexey


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