by using the below rules in your squid.conf will stop msm, not sure about yahoo but if you check your log and look for the yahoo lookup entries you could modify these rules to suit yahoo blocking mabye.. <snip> -- squid.conf -- acl msnmessenger url_regex -i gateway.dll http_access deny msnmessenger ian -----Original Message----- From: Michael Gale [mailto:mgale@xxxxxxxxxxxxx] Sent: Friday, 12 December 2003 9:46 AM To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: Re: Block MSN Messenger & Yahoo Messenger Hello, Would running squid in transparent mode with no cache :) be able to block MSN and yahoo messenger :) Michael. On Thu, 11 Dec 2003 10:43:28 +1000 "Lawrence Tang" <ingsiong@xxxxxxxxxxxxxx> wrote: > Hi, > I have an RH9 with NAT access for the client. I would like to block MSN & Yahoo messenger from the client to access. > Can any body advice me ? Thanks in advance. > > Best Regards, > > Lawrence Tang > -- Michael Gale Network Administrator Utilitran Corporation