Re: WEB Proxy service keeps restarting...
- From: "Quillman Shawn (RBNA/CSA1) *" <Shawn.Quillman@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 14 Jul 2005 15:15:49 -0500
It does if you switch the sqlserver service to listen on port 1434.
-----
Robert Bosch Corporation
Technical Systems Analyst (RBNA/CSA1)
Corporate Sales Reporting Systems
38000 Hills Tech Drive - Farmington Hills, MI 48331 - USA
phone: 1 (248) 553-1164 fax: 1 (248) 848-6969
shawn.quillman@xxxxxxxxxxxx
http://www.bosch.us
-----Original Message-----
From: JosephK [mailto:josephk@xxxxxxxxx]
Sent: Thursday, July 14, 2005 4:04 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
I agree on the SQL ports. SQL doesn't use UDP 1434.
Joseph
-----Original Message-----
From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
Sent: Thursday, July 14, 2005 6:31 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
The next thing to do here is to remove the latest change (i.e., the last
filter added) and see if ISA settles down.
Those UDP:137 packet filter entries are nothing to worry about; just
Windows trying to resolve names (UDP-137 is the NetBIOS name resolver).
The fact that it's using source ports 1433 & 1434 is mere coincidence.
I can't comment on the spoof attacks because you've chosen to obfuscate
the log entries, but unless your ISP is using those IPs on routers,
etc., then the spoof alert is likely true. Are you using those IPs
internally?
-----Original Message-----
From: William Robertson [mailto:william.robertson@xxxxxxxxxx]
Sent: Thursday, July 14, 2005 3:31 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
Sorry 'bout that Jim... got too excited with the Application logs.. :)
Packet Filter log shows *many* of the following SPOOF attacks coming in
via
my external interface:
7/13/2005, 8:54:24, 172.16.115.38, <ISA_EXT_IF>, Tcp, 1360, 25, SYN ,
Spoof,
196.37.130.153, -, -
7/13/2005, 10:05:28, 172.25.24.81, <ISA_EXT_IF>, Tcp, 4163, 25, SYN ,
Spoof,
196.37.130.153, -, -
Coupled with this, 90% of my Packet Filter logfile is made up of the
following (SQL Slammer??) attacks?
7/13/2005, 10:05:24, <ISA_EXT_IF>, <INT_NETWORK_IP>, Udp, 1433, 137, -,
BLOCKED, <ISA_EXT_IF>, -, -
7/13/2005, 10:05:24, <ISA_EXT_IF>, <INT_NETWORK_IP>, Udp, 1434, 137, -,
BLOCKED, <ISA_EXT_IF>, -, -
I have the following WEB Proxy plugins installed:
- SurfControl WEBFilter v4.5.0.31
- ISA Monitor v1.3
As to when the problem started... hmmm.... difficult to say, but I know
that
I only installed the ISA Monitor fairly recently (like ~1-2 months ago),
and
this may coincide with the timing of the problem... I'm not sure. Anyone
know of any issues with ISA Monitor?
Thanks
William R.
-----Original Message-----
From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
Sent: 13 July 2005 10:24 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
Hi Bill,
..and the rest of the questions?
You can examine your packet filter logs to see where the spoof attack
was seen.
-------------------------------------------------------
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
-------------------------------------------------------
-----Original Message-----
From: William Robertson [mailto:william.robertson@xxxxxxxxxx]
Sent: Wednesday, July 13, 2005 07:33
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
Thanks Jim.
I have many (~600 today alone) of the following spoof attacks in my
application log:
Event ID: 15108
Date: 13/07/2005
Time: 08:54
Description:
ISA Server detected a spoof attack from Internet Protocol (IP) address
172.16.115.38. A spoof attack occurs when an IP address that is not
reachable via the interface on which the packet was received. If logging
for
dropped packets is set, you can view details in the packet filter log.
And then shortly after I had this one:
Event ID: 14079
Date: 13/07/2005
Time: 08:56
Description:
Due to an unexpected error, the service w3proxy stopped responding to
all
requests. This occurred 2 time(s) in the past 20:18 hours. Try to stop
the
service or kill the corresponding process if it does not respond, and
start
it again. Check the Event Viewer for related error messages.
And then when the service restarted itself, my cache was corrupt:
Event ID: 14176
Date: 13/07/2005
Time: 08:56
Description:
Disk cache E:\urlcache\dir1.cdat failed to initialize. Some errors were
encountered when ISA Server restored specific data cache files. ISA
Server
will now attempt to recover these files. These errors may have occurred
because there was not enough time to complete all necessary shutdown
operations, when ISA Server was previously shut down. To avoid this in
future, you can increase the value of the
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\WaitToKillServiceTim
eout
registry key. Identify the reason for cache failure by examining
previous
recorded events, or the error code. The error code in the Data area of
the
event properties indicates the cause of the failure (internal code:
503.6333.3.0.1200.166).
I am extremely suspicious of all the spoof attacks, but they are on
"private" IP addresses so I cannot figure where they are coming from.
Surely
not via my ISA'a external (public/routed) interface??
Thanks
William R.
-----Original Message-----
From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
Sent: 12 July 2005 03:56 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Re: WEB Proxy service keeps restarting...
http://www.ISAserver.org
This is a bad suggestion.
As Robert stated, SP2 includes this fix - if you try to reapply it,
nothing will happen.
..now on to troubleshooting:
1. what additional ISA events are found in the System and Application
event logs?
2. what traffic is found in the web proxy logs for that same time frame?
3. what web proxy plug-ins are you running?
4. when did this behavior start?
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