• RSS
  • Twitter
  • FaceBook

Welcome to ISAserver.org

Forums | Register | Login | My Profile | Inbox | RSS RSS icon | My Subscription | My Forums | Address Book | Member List | Search | FAQ | Ticket List | Log Out

Deny rule (blacklist) slows ISA Server 2004 down

Users viewing this topic: none

Logged in as: Guest
  Printable Version
All Forums >> [ISA Server 2004 Firewall] >> Access Policies >> Deny rule (blacklist) slows ISA Server 2004 down Page: [1]
Login
Message << Older Topic   Newer Topic >>
Deny rule (blacklist) slows ISA Server 2004 down - 16.Sep.2004 9:09:00 AM   
Joepsel

 

Posts: 6
Joined: 20.Apr.2004
From: The Netherlands
Status: offline
Hello,

Currently I'm testing ISA Server 2004 as a web proxy only (for monitoring and controlling internetaccess) and configured a few rules for full access and whitelist-access (for some users).

Also I have a Deny-rule combined with a blacklist to block specific websites. When I enable this rule, everythings works okay but it takes about 15 second to request a webpage! Any clues?

And, another thing: when I request www.google.com (for example). When the blacklist-rule is disabled it shows 5 entries in the live log (Monitoring-->Query). Wheb the blacklist-rule is enabled it shows 23 entries for the same request...

What can it be that ISA is slowed down so much because of that deny-rule? DNS?

Thank you very much.
Post #: 1
RE: Deny rule (blacklist) slows ISA Server 2004 down - 16.Sep.2004 4:02:00 PM   
Joepsel

 

Posts: 6
Joined: 20.Apr.2004
From: The Netherlands
Status: offline
Finally... I fixed this problem:

http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/disablenameresolution.mspx

(in reply to Joepsel)
Post #: 2
RE: Deny rule (blacklist) slows ISA Server 2004 down - 17.Sep.2004 8:39:00 PM   
grinn253

 

Posts: 76
Joined: 12.Jul.2004
From: Seattle
Status: offline
Good Job! [Smile]

(in reply to Joepsel)
Post #: 3

Page:   [1] << Older Topic    Newer Topic >>
All Forums >> [ISA Server 2004 Firewall] >> Access Policies >> Deny rule (blacklist) slows ISA Server 2004 down Page: [1]
Jump to:

New Messages No New Messages
Hot Topic w/ New Messages Hot Topic w/o New Messages
Locked w/ New Messages Locked w/o New Messages
 Post New Thread
 Reply to Message
 Post New Poll
 Submit Vote
 Delete My Own Post
 Delete My Own Thread
 Rate Posts