[WBEL-users] Ports 50 and 51

[Johnny Hughes]

On Thu, 2004-08-05 at 06:45, Jeff Maze wrote:
> Hello,
> 	I remember someone asking about these..  What are they used for and
> why during a default install, are these opened on the firewall?
> 	Thanks..
> 
I did some more research on the web and it looks like port 50 is for ESP
encryption / authentication (
http://www.networksorcery.com/enp/protocol/esp.htm ) ... port 51 is for
AH ( http://www.networksorcery.com/enp/protocol/ah.htm ).  Both are
integral to the IPV6 protocol and IPSec.

They are open on the install because RedHat decided to open them for
RHEL...to support the IPV6 addresses as well as regular IP (v4)
addresses.
Johnny Hughes
HughesJR.com