netdev - Re: [0/7] [PPP]: Fix shared/cloned/non-linear skb bugs (was: malformed captured packets)

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Wed, 19 Sep 2007 19:51:48 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Toralf Förster <toralf.foerster@....de>
Cc:	netdev@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
	James Chapman <jchapman@...alix.com>
Subject: Re: [0/7] [PPP]: Fix shared/cloned/non-linear skb bugs (was: malformed captured packets)

On Tue, Sep 11, 2007 at 08:12:50PM +0200, Toralf Förster wrote:
> 
> I'm wondering why some UDP packets of the MS messenger protocol (with the usual
> text like "please click at www.we-destroy-your-computer.com") always have wrong
> check sums regardless whether sniffed at ppp0 or eth0 interface.

Maybe your wireshark is broken? I've tried wireshark and tcpdump
here and the sums look fine.

> and I'm wondering why it is still possible to capture such packets at eth0.

tcpdump happens before the packet goes into the IP stack which
is whare iptables lives.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
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