Hi Gr8...so If I got this correctly TCP In local port 53 ...remote any TCP Out local any....remote 53 UDP Receive send local 53 remote any UDP Send Receive local any remote 53.............is this correct? William PS thanks for the help but I am fairly new to public dns servers behind a firewall ________________________________ From: Steve Moffat [mailto:steve@xxxxxxxxxx] Sent: 24 October 2004 23:44 To: [ISAserver.org Discussion List] Subject: [isalist] RE: DNS server http://www.ISAserver.org you'll need incoming / outgoing dns query packet filters, on each ISA Server as well as publishing them. S isaserver.org