On Saturday 29 September 2007 08:32:29 am Tim wrote: > On Fri, 2007-09-28 at 10:08 -0700, Knute Johnson wrote: > > Below is the entry for 50 and 51. Do you know what > > these are for and do I need them? > > > > 50 ESP Encap Security Payload [RFC2406] They are for ipsec - if you use VPN (to work for example) you will likely need to think about these.