> -----Original Message----- > From: Matthew Reath [mailto:m...@mattreath.com] > Sent: 07 February 2012 21:34 > To: nanog@nanog.org > Subject: Firewalls in service provider environments > > All, > > Looking for some recommendations on firewall placement in service > provider > environments. I'm of the school of thought that in my SP network I do > as > little firewalling/packet filtering as possible. As in none,
I had a vendor actually suggest that that ALL my customer traffic should traverse a firewall. I asked why and they said "Ahhh it the internet, must have firewall". I suppose this must have been a great firewall. So yes I would agree with you, firewall nothing for your customers unless they are paying you for a specific service. Filtering known bad ports, well, what's a known bad port? Bad for one person may be quite important for another. Whilst filtering port 25 outbound may help prevent some bots from emanating spam, it certainly does a lot to annoy other people. -- Leigh Porter ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________
