Security Basics mailing list archives
Re: TCP vs UDP
From: Xaos <xaos () compulink gr>
Date: Sat, 09 Nov 2002 17:02:00 +0200
Although i'm not an expert i would say it depends on the port... Say for example that we're talking about a DNS server... surely you'll leave open the UDP port 53 so that i will answer to clients but you won't open TCP 53 as well unless you want to allow everybody to perform zone transfers... I think that sort of rule more or less applies to all the other ports as well... If you don't need it open.. close it... :-)
Xaos Roberto Ramsis wrote:
hello thanks to everyone who replied to my last msg what's the difference between a port TCP and UDP?i am talking from a firewall concept,i want to know ,if i need to block a port,when should i block TCP and when UDP and when both?Thanks in advance _________________________________________________________________MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus
Current thread:
- TCP vs UDP Roberto Ramsis (Nov 09)
- Re: TCP vs UDP Xaos (Nov 11)
- RE: TCP vs UDP Clint Harris (Nov 12)
- AW: TCP vs UDP Robert Sieber (Nov 13)
- <Possible follow-ups>
- RE: TCP vs UDP Gene LeDuc (Nov 12)
- Re: TCP vs UDP Gene (Nov 14)
- Re: TCP vs UDP Chris Berry (Nov 12)
- RE: TCP vs UDP Roberto Ramsis (Nov 12)
- RE: TCP vs UDP Mike Cain (Nov 13)
- Re: TCP vs UDP Arvind Shyamsundar (Nov 13)
- Re: TCP vs UDP jnf (Nov 14)