Home page logo

nanog logo nanog mailing list archives

Re: Quarantine your infected users spreading malware
From: Bill Nash <billn () odyssey billn net>
Date: Tue, 28 Feb 2006 14:07:36 -0500 (EST)

The simplest method is to issue a different gateway to a registry of known offenders, forcing their into a restrictive environment that blocks all ports, and uses network translation tricks to redirect all web traffic to a portal.

For cable modems and bridged DSL, you can do this with DHCP, matching their MAC address. PPPOE/DSL or similiar, you match on user name.
Issue RFC1918 space with a gateway to your quarantine network.

The rest is NAT/PAT and w3proxy stunts. You could pull it off with something as simple as iptables and squid, after dealing with the DHCP or authentication servers (ala Radius) to issue to the correct credentials.

- billn

On Tue, 28 Feb 2006, Christopher L. Morrow wrote:

On Tue, 28 Feb 2006, Jim Segrave wrote:


It puts them in a protected environment where they can get cleaned up
on-line without serious risk of re-infection. They can pop their
e-mail, reply via webmail, but they can't connect to anywhere except a
list of update sites.

there was little in the way of 'how' in the link above though :(

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]