Hello Yes it is checked The event in my ISA server is the event id: 14044, category: packet filter The packet filter is dropping internet protocol (ip) packet Every time I have this event my dns server stop responding and I must restart both servers dns and isa Thank you hanan -----Original Message----- From: John Tolmachoff [mailto:isalist@xxxxxxxxxxxx] Sent: 28 December 2002 17:07 To: [ISAserver.org Discussion List] Subject: [isalist] RE: DNS stop responding http://www.ISAserver.org Do you have in the DNS server properties checked Protect against Pollution? What kind of attack, DOS? John Tolmachoff MCSE, CSSA IT Manager, Network Engineer RelianceSoft, Inc. Fullerton, CA 92835 www.reliancesoft.com -----Original Message----- From: hanan [mailto:nouran@xxxxxxxxx] Sent: Saturday, December 28, 2002 7:27 AM To: [ISAserver.org Discussion List] Subject: [isalist] DNS stop responding http://www.ISAserver.org Hello Every time my ISA server is attacked the DNS services stop responding and when I restart the servers (both the ISA and the DNS) the DNS services is responding. Could you please tell me what I must do? Hanan Best regards List Sponsored by Aspelle Aspelle's Microsoft-centric, Aspelle Everywhere, leverages ISA server and the Internet to quickly and cost-effectively manage and deliver secure, client-less access to all corporate applications (Web, Unix, Windows and legacy systems), for all users. More info at http://www.aspelle.com/info ------------------------------------------------------ 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: isalist@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') List Sponsored by Aspelle Aspelle's Microsoft-centric, Aspelle Everywhere, leverages ISA server and the Internet to quickly and cost-effectively manage and deliver secure, client-less access to all corporate applications (Web, Unix, Windows and legacy systems), for all users. More info at http://www.aspelle.com/info ------------------------------------------------------ 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: nouran@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')