Firewall Wizards mailing list archives
Re: Shomiti Taps, Cisco Port Mirroring and IDS
From: Roelof JT Jonkman <roel () SiliconDefense com>
Date: Fri, 04 Jan 2002 10:46:54 -0800
Don,
Original Router-----Firewall After Router----<P 1> Century TAP <Port 2>---Firewall | | <P 3> <P 4> The vendors advised me that for the other 2 ports, I was told that each port mirrored out one direction flow. Eg. Router --->Firewall for Port 3 and Firewall---> Router for Port 4. From the looks of things I would have to connect both Port 3 and 4 to another Hub and plugging an network IDS into that hub.
If the effective bandwidth between the router and the firewall doesn't exceed the bandwidth of a the hub. IOW the aggregate of the flow from the router to the firewall and the flow from the firewall to the router can not exceed the bandwidth of the hub, otherwise you're loosing packets in the hub. If the aggregate exceeds the bandwidth of the hub, there are various solutions, depending on the abilities of the IDS, you can stick two interfaces in the IDS. And then there is propably a variety of solutions with switches and port mirroring that you can do. (Although those switches tend to get expensive.) Roel Jonkman Security Engineer http://www.SiliconDefense.com _______________________________________________ firewall-wizards mailing list firewall-wizards () nfr com http://list.nfr.com/mailman/listinfo/firewall-wizards
Current thread:
- Shomiti Taps, Cisco Port Mirroring and IDS Don Ng (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Paul Cardon (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Ryan Russell (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Paul Cardon (Jan 06)
- RE: Shomiti Taps, Cisco Port Mirroring and IDS franks (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Ryan Russell (Jan 04)
- RE: Shomiti Taps, Cisco Port Mirroring and IDS franks (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Roelof JT Jonkman (Jan 04)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS John Adams (Jan 05)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Don Ng (Jan 06)
- Re: Shomiti Taps, Cisco Port Mirroring and IDS Paul Cardon (Jan 04)