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DNS failure on Windows SBS 2003

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by srichardson

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I am running Windows SBS 2003 system as my PDC.
Symantec endpoint protection client was installed as the AV.
With SEP installed we could not see the mapped drives.
We resolved this after removing SEP.
We can now see the drive mappings but cannot get out to the internet.
Is this a DNS issue as it appears or something else?

Any advise is welcome.

2 replies

by robo_dev

Not seeing drive mappings sounds like the personal firewall was blocking ports 137-139 and 445. In many cases you have to configure the personal firewall to allow Active Directory to work.

The nbtstat utility can help to figure out if netbios/Windows networking is functioning normally.

http://www.computerhope.com/nbtstat.htm

If you cannot get to the internet:

The nslookup utility can verify if DNS is working from the workstation.
http://en.wikipedia.org/wiki/Nslookup

Of course the workstation needs to be able to ping the default gateway.

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