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Users cannot login to computers with firewall client installed

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Users cannot login to computers with firewall client in... - 15.Nov.2010 11:24:23 AM

radek108

Posts: 2
Joined: 1.Sep.2009
Status: offline

Hello,

I have the following problem with ISA 2006 Firewall Client.
After expanding our network address space from 192.168.1.0/24 to 192.168.0.0/23,
users cannot log in to computers where firewall client is installed.
Domain controller is not accessible although following firewall rule was created:
enable all outbound traffic from internal to internal network (internal network = 192.168.0.0/23).

I'll appreciate any help.

Thank You
Radek

Post #: 1

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RE: Users cannot login to computers with firewall clien... - 8.Feb.2011 12:23:27 PM

pwindell

Posts: 2244
Joined: 12.Apr.2004
From: Taylorville, IL
Status: offline

Never ever roll back the mask to make the subnet larger. Not on a /24bit segment anyway. Ethernet degrades starting around 250-300 hosts, so for every 200 Host create a whole new /24bit segment and add a LAN Router between them. Everytime you roll a mask back by a single "bit" it doubles the Hosts,...so you went from 254 hosts to over 500 Hosts,....which is way more than 250-300.

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Phillip Windell

(in reply to radek108)

Post #: 2