General discussion



By noakser ·
Hi, since installing ISA as the company Proxy/Firewall solution I have noticed that my DNS cache has not been updating itself, nor is possible to ping or tracert to an external web address, either URL or IP. I am still able to access web pages however using the ISA address as a proxy in IE. What do I need to do to allow ping and tracert through the ISA server?

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by CG IT In reply to ISA and DNS

need a little more information. If you open a command prompt, type in ping<space>IP address and press enter do you get the message "connection timed out"? Are you trying this from a workstation? DC? member server? what account are you using? what Version of O/S on the machine your trying to do this from?

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by noakser In reply to
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by noakser In reply to ISA and DNS

Hi, I have incorrectly awarded points for this although it is still unanswered. It doesn't matter whether it is a client or server or what type of OS, I get a timed out response, even though the URL is being resolved.

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by marquesdacosta In reply to ISA and DNS

To allow internal network clients the ability to ping Internet hosts, perform the following steps:
Configure the client as an ISA Server SecureNAT client. Only ISA Server SecureNAT clients are able to use non-TCP/UDP protocols.
In the ISA Management console, expand your server or array name and then expand the Access Policy node.
Right-click the IP Packet Filters node and click the Properties command.
In the IP Packet Filters Properties dialog box, select the Enable packet filtering check box, and then select the Enable IP routing check box.
Click Apply. Allow the ISA Server to restart the services. Then click OK.
For more details look at

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