On Wed, Sep 2, 2009 at 9:11 AM, Helmut Jarausch<jarau...@skynet.be> wrote: > Hi, > > I'd like to allow remote access (via ssh only) to a given machine. > Unfortunately, my remote IP is dynamic and reverse lookup > (e.g. specifying only_from = .skynet.be in /etc/xinetd.conf) doesn't work. > So, I have to find out which IP ranges are used by a given > internet provider (e.g. skynet.be). > > Does anybody know how to find out? > > Many thanks for a hint, > Helmut.
Easiest way: ask them to tell you the ranges :) Otherwise would be guessing. You can look at arin (or local equivalent) to see which IP range(s) they own. But nobody knows for sure other than them.
