Hi George, Hi Group,
The protovol-number is a 8-bit field in the IP-Header and defines the
Protocol that the packet encapsulated in the ip-header uses. Common
Protocol Numbers:
1 ICMP
6 TCP
17 UDP
88 IGRP
89 OSPF
You can find the complete reference at
http://www.isi.edu/in-notes/iana/assignments/protocol-numbers
hth
Reinhold
--
Reinhold Fischer
CCNP/SCSA/HP Certified Consultant for Network Management
On Thu, 31 Aug 2000, George Zhang wrote:
> I read the following form Cisco documentation about IPSec:
>
> "IKE uses UDP port 500. The IPSec ESP and AH protocols use PROTOCOL
> numbers 50 and 51. Ensure that your access-list are configured so that
> 50, 51 and UDP port 500 traffic is not blocked ..."
>
> My question is, what are the PROTOCOL numbers? This is the first time I
> read or heard about "PROTOCOL number"? I know many protocols by names
> such as TCP, UDP, ICMP etc, by I have never heard about PROTOCOL
> numbers? What protocols 50 and 51 are associated with? Could someone
> please explain that to me? Thanks.
>
> George Zhang, CCNP
>
>
> ___________________________________
> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> FAQ, list archives, and subscription info: http://www.groupstudy.com
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
>
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
