Hi Sachin, There is nothing you can do on your end. Inform your upsteam provider and let them stop things on the fat end of the pipe. HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: sachin vaish [mailto:sachin.vaish@xxxxxxxxxx] Sent: Tuesday, April 22, 2003 3:42 AM To: [ISAserver.org Discussion List] Subject: [isalist] DOS attacks http://www.ISAserver.org Hi, We are receiving a lot of all port scans and DOS attacks from different ip addresses which cause our routers / ISA Server to fall over. Is there a way of stopping or minimising the attacks? Sachin ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Exchange Server Resource Site: http://www.msexchange.org/ Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')