Question about port for NSLOOKUP
Cricket Liu
cricket at acmebw.com
Mon Apr 24 22:27:10 UTC 2000
> I have a question I hope someone could help me with. I'm trying to block
> "unused" tcp/ip ports on a server. I'm able to successfully do that and
> leave port 53 open for DNS. However, it appears that nslookup stops
working
> and can't find the "default" nameserver.
>
> Question: What TCP/IP or UDP port does NSLOOKUP need to operate
> on besides port 53? Does anyone know that.
nslookup sends queries from a dynamically assigned
ephemeral port to port 53.
cricket
Acme Byte & Wire
cricket at acmebw.com
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