Can use both:

ntp             123/tcp    Network Time Protocol
ntp             123/udp    Network Time Protocol

-----Original Message-----
From: Mcfadden, Chuck [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 20, 2001 10:44 AM
To: [EMAIL PROTECTED]
Subject: NTP Question [7:29770]


A friend of mine was doing a PIX installation on the edge of a W2K
environment.  He was trying to allow NTP through the PIX but it would not
go.  He found that, since he was using an inbound ACL, the packet would
eventually reach the explicit deny.  According to his research, he had to
allow port 123 (NTP) in his ACL in able to allow it through the firewall,
even though it was established.  The question that has since been
unanswered:  Does NTP use UDP or TCP or both?  Any ideas?
ccie1ab (chuck)




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