From: Aleksandar Milivojevic <amilivojevic@pbl.ca>
To: Simon Lodal <simonl@parknet.dk>
Cc: netfilter@lists.netfilter.org
Subject: Re: DNAT hiding routers behind it
Date: Wed, 11 Aug 2004 15:29:12 -0500 [thread overview]
Message-ID: <411A8198.2030409@pbl.ca> (raw)
In-Reply-To: <4114EB94.8050004@parknet.dk>
Simon Lodal wrote:
> I would like to set up a stealth sniffer between firewall and next-hop
> router, but I do not know how, wish I still had a hub.
You said your router is actually an ethernet switch (that have some
routing capabilities)? On most switches, you can assign one or more
ports to be monitoring ports. They will receive copy of all traffic
going through the switch. Check if your switch supports that.
Configure one port to be monitoring port, connect PC to it. Do not set
up IP address or anything on that interface, just bring it up with
ifconfig. Run tcpdump or such on that interface. And you have your
stealth sniffer.
--
Aleksandar Milivojevic <amilivojevic@pbl.ca> Pollard Banknote Limited
Systems Administrator 1499 Buffalo Place
Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
prev parent reply other threads:[~2004-08-11 20:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-06 17:25 DNAT hiding routers behind it Simon Lodal
2004-08-06 18:26 ` Dick St.Peters
2004-08-06 21:08 ` Simon Lodal
2004-08-06 22:56 ` Antony Stone
2004-08-07 2:51 ` Simon Lodal
2004-08-07 7:37 ` Antony Stone
2004-08-07 14:47 ` Simon Lodal
2004-08-11 20:29 ` Aleksandar Milivojevic [this message]
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