Great Circle Associates Firewalls
(August 1996)
 

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Subject: DNS lookups to internal node
From: Bill Stout <bill . stout @ hidata . com>
Date: Fri, 23 Aug 1996 10:57:39 -0700
To: Firewalls @ GreatCircle . COM

Ever since 'the power outage', I've seen an increasing number of alerts
in my firewall log, of external systems attempting to contact my internal
DNS server @ port 53 (denied).

It is listed on my external server as a mail host.  I have a skeleton
external experimental web server (not ready for prime time), and 
an internal 'intranet' server.

I may have made a mistake somewhere.  Can someone clue me in on why 
this is happening?

External DNS server: hidata.com
Internal DNS server: osc.hidata.com

Bill

BTW - Anyone know of a fully functional 'nslookup' exe for NT?

Bill Stout
_______________________________________________________________________________
Senior Systems Admin   NT/UNIX/I-net/Routers/Mainframes/Janitor ;)
Hitachi Data Systems   408-970-4822   ---  Disclaimer:  I speak only for myself
___________"Infowar, Cyber-war, yes, 'they' _are_ out to get you..."___________



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