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Branch Repeater and CIFS, in the Network Performance / WAN Optimization forum on BrianMadden.com

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dchurch posted on Tue, Dec 9 2008 1:38 PM

We just purchased the Branch Repeater and Wanscaler. 

our logs on the branch repeater have a lot of this entry

CIFS Session from client <ip> to server <ip> cannot be accelerated for CIFS due to server security settings. 

unfortunately our domain controllers are also file servers, i know not the best practice.  In any case the documentation gives  me a link how to disable this.  I have two questions on doing this. 1. Disabling Digitally sign communcations on the domain controllers is that a bad idea and 2. Do I have to disable this setting on every server that talks to the branch repeater?

 

5.14.2 CIFS Security and Acceleration
Windows file servers have two security modes, “signing” and “sealing.” Both inhibit
CIFS acceleration.
By default, Windows file servers offer signing but do not require it, except for domain
servers, which require it by default.
To achieve CIFS acceleration with systems that require signing, you must change the
system security settings to disable this requirement. This is done from “Local Security
Settings.”
Windows 2003 Server (see Figure 5-22):
• Set “Microsoft network client: Digitally sign communications (always)” to
“Disabled”
• Set “Microsoft network server: Digitally sign communications (always)” to
“Disabled”
Windows 2000 Server (see Figure 5-23):
• Set “Digitally sign server communication (always)” to “Disabled”
• Set “Digitally sign client communication (always)” to “Disabled”

 

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1. Disabling Digitally sign communcations on the domain controllers is that a bad idea and

I guess it depends how secure you need your network to be. What does your "security team" say? (or are YOU that person too? Smile ).

 

2. Do I have to disable this setting on every server that talks to the branch repeater?

I suspect you'll probabably only need to do this on the DCs.

(If you STILL get the error appearing, you'll know I got it wrong!)

 

Paul

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dchurch replied on Fri, Dec 12 2008 12:54 PM

hmmm the whole point of asking is because we are not sure.  Not a fan of testing things in our production environment.  Anyone have any experience with this

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