Re: I Need to PING
- From: "isa" <isa@xxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 18 Apr 2002 12:39:09 +0200
Thank you very much.
It's working now!
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 17 April 2002 07:01 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: I Need to PING
http://www.ISAserver.org
No external host will ever ping an internal host while ISA stands
between them.
Here's what you can do:
1. Create a packet filter allowing ICMP Ping Queries and limit it to:
only the IP addresses of the DR DNS servers (Remote Computer)
only the IP address that the DNS servers are published on (Local
Computer)
2. Create a packet filter allowing ICMP Ping Response and limit it to:
only the IP addresses of the DR DNS servers (Remote Computer)
only the IP address that the DNS servers are published on (Local
Computer)
That way, ISA will respond to them, but refuse pings from anyone else.
This gives them the impression that they're pinging your DNS, while in
fact, they can't touch it.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/authors/harrison/
Read the books!
----- Original Message -----
From: <isa@xxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Wednesday, April 17, 2002 8:54 AM
Subject: [isalist] I Need to PING
http://www.ISAserver.org
HI all
I have two DNS servers behind my Integrated ISA server that must be
pingable(if such a word exists) The DNS is working fine, but i need to
add more domains. The Domain Registration server ping the specified DNS
servers to check if they exist, but don't succeed. I have turned on IP
routing as mentioned in the learning zone, but there is still something
missing. I'm only getting time-outs. If you'd like to test, ping
dns1.bwi.co.za or dns2.bwi.co.za. Thank you for your intrest Tinus
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