Re: 0xc0040017 FWX E TCP NOT SYN PACKET DROPPED
- From: "Henk Steunenberg \(Ms\)" <stjesp@xxxxxxxxxxx>
- Date: Mon, 8 May 2006 13:37:36 +0100
hello,
As by Jim Harrison:
This is ISA reporting a host that's violating the rules of TCP.
All TCP sessions should begin with a TCP-SYN packet and this one didn't do
that.
It's a classic technique for OS and application fingerprinting that fails
miserably against an ISA server.
Essentially, it's a non-issue unless you see a lot of these from a
particular host.
In that case, you may want to contact their ISP and complain.
Signature
Jim Harrison [ISASE]
Read the help, books and articles!
Henk
"Baldur" <Baldur@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:B941C0D0-6FE1-4585-8283-5BBDB72E92C6@xxxxxxxxxxxxxxxx
Hi
I have a problem getting a network monitoring machine to access my
ISAServer2004 computer via RPC Protocoll.
In the logfile I cann see so far:
remote machine initiates a connection to the isaserver on Port 135 RPC
then the remote machine initiates on the high Port 17000
then the remote machine closes the connection on port 17000
and then it say Denied Connection without any rule.
In the logilfe the corespondig entry says 0xc0040017 FWX E TCP NOT SYN
PACKET DROPPED
I cannot get the remote machine to work (monitor) the Isaserver2004
Since we use the Isaserver just for WebProxying Outlook Web Access I
choosed
a single Network Adapter Design. Published the OWA no Problem.
I created the following allow everything Roule since the ISAServer lies in
a
Perimeter Network protected from other Firewalls.
Name Action Protocols From To
Condition
OpenView Allow All Outbound Trafic Anywhere Anywhere All
Users
Can anyone help?
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