[CentOS] Why is iptables configured to accept packets on ports 50 and 51?

Tue May 17 18:52:04 UTC 2011
Aleksey Tsalolikhin <atsaloli.tech at gmail.com>

On Tue, May 17, 2011 at 11:25 AM, Michel van Deventer
<michel at van.deventer.cx> wrote:
> The -p you are referring to is NOT a port, but a protocol (number), 50
> and 51 stand for IPSEC protocols (AH and ESP).

Doh!  *facepalm*

Thanks, Stephen, Eero and Michel. I appreciate your help.  :)