take a look at www.dnsstuff.com it has a cidr calculator
Kevin Bilbee > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Jim Comerford > Sent: Friday, September 24, 2004 11:24 AM > To: [EMAIL PROTECTED] > Subject: [IMail Forum] Slightly OT: Imail and netmasks... > > > If I wanted to allow "Relay For Addresses" and wanted to include > all Ips in > our class C EXCEPT 1, how would I do this. > > a.b.c.20 would be the one I would want to EXCLUDE > > I think that using a.b.c.0/28 (netmask 255.255.255.240) would get me the > 1-15, but I really don't know how this works for the other blocks > afterwards. I'm looking to make the least number of entries in my "relay > for addresses" list > > Thanks. > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
