Welcome to ISAserver.org

Web chaining problem

Users viewing this topic: none

Logged in as: Guest

Printable Version

All Forums >> [ISA Server 2000 Firewall] >> DMZ >> Web chaining problem

Page: [1]

Message

<< Older Topic Newer Topic >>

Web chaining problem - 8.Aug.2004 4:42:00 PM

123abc123abcxyz

Posts: 22
Joined: 2.Apr.2004
Status: offline

Hi to all, and sorry for my english

I have a b2b configuration with two isa server
I have installed firewall software in all client and i have configured all IE to use the internal ISA as a proxy.

Internal ISA Server is a secure nat of the external and have firewall and web chaining with the external.

Internal DNS forward to DNS of ISP. On internal ISA server i have protocol rule which allows access to the DNS protocols DNS Query (UDP port 53 send/receive) and DNS Zone Transfer (TCP port 53 outbound) and a site&content rule which allows access to the ISP DNS servers. On External ISA Server i a protocol rule and site&content rule the allow all destination at the user that i use for chaining.

Now, the problem.
Client have problem surfing on Internet.
If i use a domain name to navigate (www.isaserver.org) i receive :
------------------------------
11004: Host not found

Background: This error indicates that gateway could not find the IP address of he web site you are trying to access.

ISA Server: srvext
Via: 1.0 srvint
------------------------------

If i use ip instead of domain name i can surf without any problem.

nslookup resolve correctly any request of the client.

Were is my error?

Thank in advanced to all for any help
Best Regard, Massimo