[Gllug] DHCP/Firewalls

t.clarke tim at seacon.co.uk
Thu Aug 23 13:02:18 UTC 2001


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Message from:-
Tim Clarke  (tim at seacon.co.uk)
Seacon Holdings plc Group, London, U.K.
Telephone: +44 (0)1474 320000
      Fax: +44 (0)1474 329946
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Daniel Fairs wrote re use of DHCP with a firewall ....

Lots of different ways to skin the cat, no doubt, but you could consider
using 192.168....... addresses for your internal machines, statically
assigned, and not use DHCP at all. Depends how big your internal network is I
suppose.   If you use 192.168 addresses for your web and mail servers, you
can use port-forwarding on the firewall. This *should* keep them nice and safe
from outside attack, since only traffic to port 80 etc will reach them.
On that basis you may not even need to put the servers on a separate ethernet.

Of course I culd be totally wrong on all this !!

Tim

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