I am trying to block a number of IP address''s and have put the range 62.0.0.0/8 into the blacklist file in that format is that format correct as it does not block that range as machines in the dmz are being hit by machines in that range ! (I am trying in this case to block ALL ip'' in the 62 range) Many thanks Denis Croombs --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.384 / Virus Database: 216 - Release Date: 21/08/2002