RE: Microsoft CIFS Port TCP 445 and VPN's
- From: Jim Harrison <jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sun, 15 Aug 2004 22:34:10 -0700
It exists in the ISA 2004 prtoocol definitions as "Microsoft CIFS".
It's also used in the system policies, which is where you should be modifying
any rules pertaining to the ISA itself.
Remember; even a VPN connection is considered a ntwork object and as wsuch,
rules need to be created (or modified) in order for traffic to flow through it.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Sun, 15 Aug 2004 19:44:33 -0500
"Thomas W Shinder" <tshinder@xxxxxxxxxxx> wrote:
http://www.ISAserver.org
Hmmm... Actually its "Direct Host" -- I think I have Direct Access on
the brain after dealing with so many who want to loop back through the
firewall to access Internal network resources! :-))
Tom
www.isaserver.org/shinder
Get the book!
Tom and Deb Shinder's Configuring ISA Server 2004
http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx]
Sent: Sunday, August 15, 2004 7:41 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Microsoft CIFS Port TCP 445 and VPN's
http://www.ISAserver.org
Hi Steve,
I haven't memorized the entire list of Protocol Definitions, but if
there isn't one for Direct Access (445), then you need to create one, as
pointed out in that article. Whether it's a DMZ connection doesn't
matter -- that doc covered the protocols required for intradomain
communciations, and we created a Protocol Definition for the Direct
Access port.
Why? Because "all open" is only truly "all open" for Firewall clients.
"All open" for SecureNAT clients included everything that has a Protocol
Definition in the ISA firewall's list of protocols.
HTH,
Tom
www.isaserver.org/shinder
Get the book!
Tom and Deb Shinder's Configuring ISA Server 2004
http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
-----Original Message-----
From: Steve Moffat [mailto:steve@xxxxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Sunday, August 15, 2004 7:34 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Microsoft CIFS Port TCP 445 and VPN's
http://www.ISAserver.org
Hi Tom
That doesn't explain why, if I have a vpn between isa and a linksys with
the allow all protocol rules going both ways does it??
I don't have exchange on a dmz...in fact I don't have a dmz...yet.
Steve
-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx]
Sent: Sunday, August 15, 2004 9:26 PM
To: Isa Weblist
Subject: [isalist] RE: Microsoft CIFS Port TCP 445 and VPN's
http://www.ISAserver.org
Hi Steve,
Check the ISA 2004 Exchange Kit article on how to make the FE Exchange
Server in the DMZ support intradomain communcations between the DMZ
segment and the BE Exchange Server on the Internal network. The
protocols required are listed there is a nice table :-)
Tom
www.isaserver.org/shinder
Get the book!
Tom and Deb Shinder's Configuring ISA Server 2004
http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
-----Original Message-----
From: Steve Moffat [mailto:steve@xxxxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Sunday, August 15, 2004 7:21 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Microsoft CIFS Port TCP 445 and VPN's
http://www.ISAserver.org
Just managed to dcpromo a server across an ipsec vpn between a linksys
router, (here) and my domain in Scotland. Hah easy peasy you would
think....mmmmmmm...let me tell you, I was tearing my hair out...couldn't
do it....kept getting to the create ntds object bit, then it would fail
with a cannot find the domain controller for this domain.....arrgggh.
The only protocol being blocked by the remote ISA 2004 was ms cifs on
tcp 445...so i went looking and found this little titbit...
"Author Topic: Microsoft CIFS Port 445
TonyR
Junior Member
Member # 11867
Rate Member posted July 24, 2004 09:34 AM
------------------------------------------------------------------------
--------
ISA is denying a connection to VPN clients on port 445
What is this used for and what is the 'fix'
Thanks
------------------------------------------------------------------------
--------
Posts: 10 | Registered: Jan 2003 | IP: Logged
tshinder
Moderator
Member # 11
Member Rated:
posted July 24, 2004 07:22 PM
------------------------------------------------------------------------
--------
Hi Tony,
VPN doesn't use TCP or UDP 445.
HTH,
Tom"
Ahh I hear you say...another beginner who doesn't know what he's
doing.......well, I created an ms cifs protocol....and allowed it from
here to internal...guess what, the dcpromo ran without a hitch from
start to finish....answer that one Dr Shinder.......:>))
Steve
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