Re: ISPs Blocking Private Addresses?

Most people use what's commonly refered to as Martian filters to filter out private address spacing. It allows those ISPs to use private address space internally and not have to worry about advertising them via external routing protocols and also keeps them from accepting bogus route announcements from other providers who haven't used the filters. On Sun, 8 Feb 1998, Peter Ford wrote:

Do most ISPs explicitly block private IP addresses (e.g. 10.X.X.X) at their borders?

Do the "default-less" ISPs filter private addresses or do they let routing/forwarding do the work?

Default-less?

thanks, peter

Joe Shaw - jshaw@insync.net NetAdmin - Insync Internet Services