nanog mailing list archives
Re: Telco's write best practices for packet switching networks
From: Joe Abley <jabley () automagic org>
Date: Thu, 7 Mar 2002 17:15:06 -0500
On Thursday, March 7, 2002, at 04:37 , Sean Donelan wrote:
My comment was originally prompted by the meeting minutes whichreported on the survey data showing that 100% of carriers are implementingfirewalls in their gateways. The 100% is what caught my eye. As the topic comes up in various places, large ISPs repeatedly say they are unable to implement filters or packet screening on their high-speed links such as at peering points.
How recently are ISPs repeatedly saying this? Packet filtering on high-speed optical interfaces has been possible for some time, depending on your router vendor, for some value of "packet filtering".
I could understand it if the issue of how to manage packet filter definitions on routers as the network changes was a problem. But if I would be slightly surprised if there was still a universal voice saying "we absolutely cannot filter packets at the edge, because the vendors won't let us".
To meet the requirements of what I understood the original quoted fragment to be saying, it's perhaps not necessary to packet filter at the edge, anyway. You can apply a firewall to just the loopback interface of a junos box and arguably consider your control element firewalled.
Joe
Current thread:
- RE: Telco's write best practices for packet switching networks, (continued)
- RE: Telco's write best practices for packet switching networks Daniel Golding (Mar 07)
- Re: Telco's write best practices for packet switching networks Rob Pickering (Mar 06)
- Re: Telco's write best practices for packet switching networks Eric Brandwine (Mar 06)
- Re: Telco's write best practices for packet switching networks Christopher L. Morrow (Mar 06)
- Re: Telco's write best practices for packet switching networks Adam McKenna (Mar 06)
- Message not available
- Re: Telco's write best practices for packet switching networks Simon Higgs (Mar 06)
- Re: Telco's write best practices for packet switching networks Steven J. Sobol (Mar 06)
- Re: Telco's write best practices for packet switching networks Christopher L. Morrow (Mar 06)
- Re: Telco's write best practices for packet switching networks Sean Donelan (Mar 07)
- Re: Telco's write best practices for packet switching networks Joe Abley (Mar 07)
- Re: Telco's write best practices for packet switching networks Christopher L. Morrow (Mar 07)
- Re: Telco's write best practices for packet switching networks Ron da Silva (Mar 08)
- Re: Telco's write best practices for packet switching networks Joe Abley (Mar 08)
- Re: Telco's write best practices for packet switching networks Christopher L. Morrow (Mar 08)