http://www.ISAserver.org ------------------------------------------------------- Thanks, I'll do a bit more diagnosis next time I encounter it, now that I know what to look for... -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Wednesday, December 13, 2006 3:14 PM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: Resolution of wpad/wspad? http://www.ISAserver.org ------------------------------------------------------- The process operates thusly: 1. FWC issues DHCP INFORM including option 252 (wpad) 2. if received, FWC attempts to determine & resolve the hostname portion of that data (we'll call it "wpad" for now) 3. if not received, FWC attempts to resolve the name "wpad" via WinSock GetAddrInfo() ------ NOTE: this behavior depends on the host's IP configuration!!! ------- 4. if "wpad" name request returns a valid IP, FWC will attempt to: a. connect to that IP address on TCP:80 b. make a "GET /wspad.dat HTTP/1.1" request 5. If #4 succeeds, FWC will use that data to a. determine the source of additional FWC data b. connect to the specified host on TCP:1745 c. issue a FWC data request Get a network capture and determine what part isn't working right. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Ball, Dan Sent: Wednesday, December 13, 2006 08:32 To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: Resolution of wpad/wspad? That was a poor choice of words on my part. It was my assumption that the FWC would do a DNS lookup to resolve the wpad/wspad entries. After testing this a bit, I'm beginning to wonder about that. I'm not entirely sure that Jim still recommends it, but it was discussed awhile back that the DNS resolution of the wpad settings was significantly faster than the DHCP resolution. ________________________________ From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Danny Sent: Wednesday, December 13, 2006 11:12 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: Resolution of wpad/wspad? Hi Jim, If we do not go the "auto-magic" route, what type of configuration do you recommend? Thanks, ...D On 12/12/06, Jim Harrison <Jim@xxxxxxxxxxxx> wrote: http://www.ISAserver.org ------------------------------------------------------- As soon as you depend on "auto-magic" anything, you're in for a real treat. Double-check your DNS (or gawd help you, your WINS) server to make sure it has the proper records and that it's responding to queries. Check your DHCP server to make sure your wpad option (252) is configured properly. IOW, own your network or be owned by it. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Ball, Dan Sent: Tuesday, December 12, 2006 12:00 To: isalist@xxxxxxxxxxxxx Subject: [isalist] Resolution of wpad/wspad? http://www.ISAserver.org ------------------------------------------------------- Had a bit of a problem this morning... Internet browsing traffic became extremely sluggish, so I tried it on another computer and it too was sluggish. I looked on the ISA server, and traffic going over the Internet NIC dropped to almost nothing. I opened up the FWC and clicked on "Detect Now", it hung there for a minute and then failed to find the server. So, I dropped to a command prompt and did a lookup on wpad and wspad, both of which resolved instantly. Then, all of a sudden, everything started to work again! Why would doing a simple DNS lookup for wpad/wspad (I tried both, so I'm not sure which one did it) get everything working again? Doesn't the FWC do that automagically? ------------------------------------------------------ List Archives: //www.freelists.org/archives/isalist/ ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/ ISA Server Blogs: http://blogs.isaserver.org/ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report abuse to listadmin@xxxxxxxxxxxxx All mail to and from this domain is GFI-scanned. ------------------------------------------------------ List Archives: //www.freelists.org/archives/isalist/ ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/ ISA Server Blogs: http://blogs.isaserver.org/ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report abuse to listadmin@xxxxxxxxxxxxx -- CPDE - Certified Petroleum Distribution Engineer CCBC - Certified Canadian Beer Consumer All mail to and from this domain is GFI-scanned. ------------------------------------------------------ List Archives: //www.freelists.org/archives/isalist/ ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/ ISA Server Blogs: http://blogs.isaserver.org/ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report abuse to listadmin@xxxxxxxxxxxxx ------------------------------------------------------ List Archives: //www.freelists.org/archives/isalist/ ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server Articles and Tutorials: http://www.isaserver.org/articles_tutorials/ ISA Server Blogs: http://blogs.isaserver.org/ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ To unsubscribe visit http://www.isaserver.org/pages/isalist.asp Report abuse to listadmin@xxxxxxxxxxxxx