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Symantec Client Firewall blocks winlogon

Posted on 2004-08-20
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Last Modified: 2013-11-16
Hi,

I have Symantec Client Firewall 5.1 running on Win XP SP2. It's coming up with the following threat warning:

winlogon.exe is attempting to access the Internet
At 18:58 on 19/08/04 the following communication was detected:
Application: \??\C:WINDOWS\system32\winlogon.ece
Protocol: TCP (Outbound)
Remote Address: ncte.ie (169.254.95.115): ldap (389)
Local Address: Service port 1183
The application file could not be found. There is no autoconfiguration data for this application. This application does not have a digital signature or the digital signature is invalid.

I am concerned about this because I was not at the machine at the time referenced and I do not recognise the IP (although ncte.ie is my domain).

I have 3 copies of winlogon.exe on my machine, one in C:\Windows\system32 and 2 in the following folders:
C:\WINDOWS\$NtServicePackUninstall$\
C:\WINDOWS\ServicePackFiles\i386\

Each around 502kb.

The firewall has mostly the default settings.

I'd appreciate any help. Thanks.
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Question by:sdower
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4 Comments
 
LVL 4

Expert Comment

by:shard26
ID: 11851826
169.254.x.x addresses are fake IP addresses that Microsoft Boxes use when they cant get an IP thru DHCP.

go to this guy's computer and from a command line type

ipconfig /all

then copy the output here.
0
 

Expert Comment

by:mordred607
ID: 11852593
Is this a multi-homed machine (Does it have more than one NIC?) You will get this error if you have a second NIC that is not hooked up; you might want to disable it.
0
 

Author Comment

by:sdower
ID: 11852904

The machine is a notebook connected to a port replicator so has several NIC's.

Here is the output of the ipconfig command:
Windows IP Configuration

        Host Name . . . . . . . . . . . . : SEAN
        Primary Dns Suffix  . . . . . . . : ncte.ie
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : ncte.ie
                                            ncte.ie

Ethernet adapter Local Area Connection 2:

        Media State . . . . . . . . . . . : Media disconnected
        Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast Et
Controller (3C905C-TX Compatible)
        Physical Address. . . . . . . . . : 00-08-74-3E-99-88

Ethernet adapter Wireless Network Connection:

        Media State . . . . . . . . . . . : Media disconnected
        Description . . . . . . . . . . . : Dell TrueMobile 1150 Series M
 Card
        Physical Address. . . . . . . . . : 00-02-2D-BA-87-6B

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . : ncte.ie
        Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast Et
Controller (3C905C-TX Compatible) #2
        Physical Address. . . . . . . . . : 00-B0-D0-10-54-78
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 192.168.10.105
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.10.6
        DHCP Server . . . . . . . . . . . : 192.168.10.11
        DNS Servers . . . . . . . . . . . : 192.168.10.11
                                            169.254.254.203
        Primary WINS Server . . . . . . . : 192.168.10.11
        Lease Obtained. . . . . . . . . . : 19 August 2004 17:05:27
        Lease Expires . . . . . . . . . . : 27 August 2004 17:05:27

0
 

Accepted Solution

by:
mordred607 earned 250 total points
ID: 11856600
I'm not sure how you got a 169.254.254.203 address in your DNS server listing, but you might want to try this:

Remove the invalid entry (if there is one) from the DHCP settings (the 169.x.x.x DNS address)

or

Your laptop client is expecting a second DNS server (and auto-creates one thus the 169.x.x.x address). You may want to go to your server and change the DHCP settings to add another DNS server (either another internal DNS server if you have one or an outside DNS server (as secondary)).

or

Set the DNS on the laptop client to 'manual' rather than DHCP and list only 192.168.10.11
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