Unable to publish a website though ISA server

Posted on 2006-04-05
Last Modified: 2010-03-18

Here is my situation:
We have a SBS2000 acting as gateway, and a web server inside the network. Up to this morning all was well: the web server was published through ISA using http headers, and the SBS IIS itself was also serving some pages.

This morning I had to change the physical link to the internet and since, I'm unable to publish my sites, from either server.
Of course the change included a change in our public IP.
The rest is OK: we surf, we get our mail through exchange relay, we do FTP, so it must be somehow that ISA is off the track but I can't find the trick.
Please help.

If you want to see the http answer, go here: its one of the websites.
Thanks for your help !!!!
280 points is all I have at the moment, sorry guys !
Question by:tarbault
    LVL 1

    Author Comment

    Maybe useful:

    I arranged for the new router to have the same internal adress as the old one, and kept the same IP for the network card on the wan side (that which is linked to the router).
    I was hoping to minimise the downtime  by doing so, but now, I'm wondering if ISA is botched because only the public IP has changed and it needs some flushing before it can work again ?

    Another track is propagation time: as the public IP is different, it might take some time to get thing up. But I'm not too shure: I use DNS host for one site and web redirect for another and neither works...

    Ideas anyone ?
    LVL 51

    Accepted Solution

    Sorry chief. I missed the ISA question in the list. Assume this is ISA 2000?
    If just the external IP changed I think you will find its simply a propagation issue.

    ISA does not hold the xlate details for example nor will it care about the arp details for the external. I think you will find its simply a case of patience.
    LVL 51

    Expert Comment

    by:Keith Alabaster

    Checking your DNS records, these look clean. it shows you are not hosting your own email server for this domain (The MX records) so I still cannot see an issue. Propagation can take up to 72 hours; lets hope the ISP made a good job of the change :)
    LVL 1

    Author Comment

    Ca it really be a propagation issue ?
    I must add details I'm afraid. is not a good example.
    it is my personal domain, which I sometimes use for testing as admin of the network. For now it has been rerouted to another server (and is operational) so lets forget it. Sorry about that.

    Our permanent problem can be seen here: santexcel<dot>no-ip<dot>info
    This domain is hosted by no-ip as a simple web redirect.
    The server can be reached, but says connection refused:

    10061 - Connexion refusée
    Internet Security and Acceleration Server

    So it is not a routing issue: you can get there, but cannot go through.

    The same webserver responds OK when queried on its local interface: http://10.0.0.x/folder:
    LVL 1

    Author Comment

    Ok, problem solved.

    As it was, it had nothing to do with ISA !
    Having tested evrything else, I tried switching between the links: the old one, which worked, and the old one which did not.

    When on the old connection, the websites were published allright, when on the new one (new router, higher bandwith) they were unreachable.

    I got in touch with our provider who checked the router config (and after several "what's this mess ?" and other niceties I wasn't supposed to hear) the tech came back to me and said that the config was perfectly ok on his side.
    Strangely enough, after that, everything began to work OK...
    So I came to the conclusion that they had botched the router config in the first place and put it right when I phoned.

    Thanks Keith for the help.
    I gladly give you the points, if only just for trying to help ! That's reason enough to me !
    LVL 51

    Expert Comment

    by:Keith Alabaster
    Thank you.


    Featured Post

    Free Trending Threat Insights Every Day

    Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

    Join & Write a Comment

    Suggested Solutions

    Downtime reduced, data recovered by utilizing an Experts Exchange Business Account Challenge The United States Marine Corps employs more than 200,000 active-duty Marines with operations in four continents, all requiring complex networking system…
    Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
    Hi everyone! This is Experts Exchange customer support.  This quick video will show you how to change your primary email address.  If you have any questions, then please Write a Comment below!
    This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

    746 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    17 Experts available now in Live!

    Get 1:1 Help Now