I have switched over to iptables but my old ipchains had this in it, I cant remember which ones were the key if I remember right only 3 of these lines were really needed to block hotmail, but I would think the idea could be used for messenger also, I just never had anyone using (abusing) it so I've not tried to block it. /sbin/ipchains -I output -p tcp -s gfx.law9.hotmail.com -d 0/0 80 -y -j DENY /sbin/ipchains -I output -p tcp -s www.pav1.hotmail.com -d 0/0 80 -y -j DENY /sbin/ipchains -I output -p tcp -s gfx.pav1.hotmail.com -d 0/0 80 -y -j DENY /sbin/ipchains -A input -s www.hotmail.com -j DENY /sbin/ipchains -A input -s gfx.law9.hotmail.com -j DENY /sbin/ipchains -A input -s gfx.pav1.hotmail.com -j DENY /sbin/ipchains -A input -s loginnet.passport.com -j DENY /sbin/ipchains -A input -s www.pav0.hotmail.com -j DENY /sbin/ipchains -A input -s email.msn.com -j DENY -----Original Message----- From: security-discuss-bounce@xxxxxxxxxxxxxxxxx [mailto:security-discuss-bounce@xxxxxxxxxxxxxxxxx]On Behalf Of Sergio A Lima Jr Sent: Tuesday, April 29, 2003 4:50 PM To: security-discuss@xxxxxxxxxxxxxxxxx Subject: block msn hi friends, I am have problems with abusive use of the software MS-Messenger. How to block in my firewall/gateway this use de software (with ipchains in kernel 2.2.x) best regards, []'s -- =================================== Sergio A. Lima Junior Analista de Suporte =================================== Servico de Atendimento ao Cliente Depto. de Suporte Gruponet Tecnologia sergio@xxxxxxxxxxxxxxx http://www.gruponet.com.br =================================== ------------------------------------------------------------------------ To unsubscribe email security-discuss-request@xxxxxxxxxxxxxxxxx with "unsubscribe" in the subject of the message. --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.474 / Virus Database: 272 - Release Date: 4/18/2003 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.474 / Virus Database: 272 - Release Date: 4/18/2003 ------------------------------------------------------------------------ To unsubscribe email security-discuss-request@xxxxxxxxxxxxxxxxx with "unsubscribe" in the subject of the message.