netdev - Re: ports beeing reused too fast

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 12 May 2009 15:32:57 +0300
From:	Octavian Purdila <opurdila@...acom.com>
To:	netdev@...r.kernel.org
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	Bill Fink <billfink@...dspring.com>,
	Eric Dumazet <dada1@...mosbay.com>
Subject: Re: ports beeing reused too fast


> > > >> Any strong reason why a firewall would drop a SYN because ports were
> > > >> used in a previous session ?
> > > >
> > > > We don't know why the firewall (Cisco FWSM) is dropping the packets,
> > > > may be a bug, limitation or miss-configuration. We are trying to
> > > > track this down with the firewall vendor.
> > >

Interestingly, we are seeing the same behavior with another high-end firewall 
(Juniper SRX). 

As mentioned previously, this can not be caused by the TW state, because the 
connections are getting closed on the server side.

Thanks,
tavi

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html