Will the new feature sets in GB-OS 5.0 work with older hardware such as GB-1000R?
-----Original Message----- From: Paul Emerson [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 05, 2007 4:50 PM To: [EMAIL PROTECTED] Cc: [email protected] Subject: Re: [gb-users] How can I block windows live messenger It is often quite difficult to block IM traffic. This is mainly due to various fallback scheme incorporated in the code. For example some IM client will use UDP/53 (assigned to DNS) when all else fails. One way to deal with the problem, is to block everything except for the services you allow and use the DNS proxy on the firewall. This approach deny everything except for what is explicitly allowed is probably the best approach but one most organization don't implement because it generally upsets people. Many organization take the opposite approach and allow nearly everything but try to block service they don't want used. This approach makes it difficult to create a truly effective access policy. Another approach is to use a bit of human engineering. That is create a usage policy which you provide to everyone in the organization and have them sign that they have read it and accept it. Then make sure you log the services that are not allowed, put filters in place. Monitor the logs. Someone violates the policy, evidenced by the the traffic in the logs, you then apply the penalty. Another thing that you will find helpful is the new IPS feature in GB-OS 5.0 which is due to be released very soon. There are IPS policies that detect/drop/reset IM activity such as Skype, MSN, etc. Paul On 6/5/07 at 4:06 PM [EMAIL PROTECTED] wrote: >Hi forum > > > > > >How can I block Windows live messenger and skype ? > > > >Regards, > > > >Wilson Mosquera > >TECNOAV > >------------------------------------------------------ >To unsubscribe: [EMAIL PROTECTED] >For additional commands: [EMAIL PROTECTED] >Archive: http://archives.gnatbox.com/gb-users/ > > -- Paul Emerson Global Technology Associates, Inc. Tel: +1.407.380.0220 http://www.gta.com/ Fax: +1.407.380.6080 Email: [EMAIL PROTECTED] Mob: +1.407.617.7818 AIM: pje1gta UK: +44 020 8123 5661 Skype: pje1gta ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/
