Can not connect to Local Network Computer

[Retired USA]

Computer 1 - Windows XP Pro, Ver 2002, SP2, Intel P4, 2GB Ram
Computer 2 - Windows XP Pro, Ver 2002, SP3, AMD Athlon 64x2 Dual Core, 2GB Ram
Computer 3 - Windows XP Pro, Ver 2002, SP3, Intel P3, 384 MB Ram

Have full access between computers 1 and 3 but no access to computer 2 from
either. Computer 2 has access to all the network computers.

The network was working fine untill a week ago. No updates were done or
configurations changed. 1 and 3 are running CA Anti-virus and 2 is running
McAfee. All three are running windows firewall.

Would appreciate any help in getting my network back up and running. I have
spent the last week reading KB articles and trying all the fixes listed there
with no luck.

 

[smlunatick]

Computer 1 - Windows XP Pro, Ver 2002, SP2, Intel P4, 2GB Ram
Computer 2 - Windows XP Pro, Ver 2002, SP3, AMD Athlon 64x2 Dual Core, 2GB Ram
Computer 3 - Windows XP Pro, Ver 2002, SP3, Intel P3, 384 MB Ram

Have full access between computers 1 and 3 but no access to computer 2 from
either.  Computer 2 has access to all the network computers.

The network was working fine untill a week ago.  No updates were done or
configurations changed.  1 and 3 are running CA Anti-virus and 2 is running
McAfee.  All three are running windows firewall.

Would appreciate any help in getting my network back up and running.  Ihave
spent the last week reading KB articles and trying all the fixes listed there
with no luck.

I know that both Norton and McAfee anti-virus softwares tend to both
the network protocol known as NetBIOS name resolution. They block
this protocol in hopes of preventing an Internet worm virus from
spreading automatically. You can check this by trying to ping the
PC's IP address instead of the PC's names.

Ex: ping 192.168.1.101
ping 192.168.1.102
ping 192.168.1.103

 

[Retired USA]

I know that both Norton and McAfee anti-virus softwares tend to both
the network protocol known as NetBIOS name resolution. They block
this protocol in hopes of preventing an Internet worm virus from
spreading automatically. You can check this by trying to ping the
PC's IP address instead of the PC's names.

Ex: ping 192.168.1.101
ping 192.168.1.102
ping 192.168.1.103

I've tried to ping all computers from each of the computers, using both the
IP address and the computer name. 1 and 3 get replys from each other but
times out when trying to ping 2. On computer 2 I get a reply from pinging
all the computers. That's what I can't understand.

After posting here I created another workgroup which applified the problem.
Now all the computers in the new group get a reply only from their own
computer name or IP address. Just can't figure out what I am missing.

 

[James Egan]

I've tried to ping all computers from each of the computers, using both the
IP address and the computer name. 1 and 3 get replys from each other but
times out when trying to ping 2. On computer 2 I get a reply from pinging
all the computers. That's what I can't understand.

One way pings like this can usually be put down to firewall issues.
What happens when you (temporarily) disable the firewalls?


Jim.

 

[Retired USA]

Disabled all the firewalls and still have the problem. I'm getting to the
point where I am about to reinstall Windows and start from a fresh install.

Do you know of a resourse that I can consult to find out exactly what
services MUST be running for a local network to work correctly. Also a
resourse that will tell me what components MUST be installed (ie., TCP/IP,
File and Print Sharing, etc). I've looked and can't find any articles or
anyone that can tell me. I may have a service disabled or on Manual that
needs to be Automatic.

Any help in this area will be greatly appreciated.

 

[James Egan]

Disabled all the firewalls and still have the problem. I'm getting to the
point where I am about to reinstall Windows and start from a fresh install.

Before re-installing windows try uninstalling mcafee to see if that
does the business. You weren't specific about which mcafee product is
installed but certainly it will be high up on the list of suspects for
something like this.

Do you know of a resourse that I can consult to find out exactly what
services MUST be running for a local network to work correctly. Also a
resourse that will tell me what components MUST be installed (ie., TCP/IP,
File and Print Sharing, etc). I've looked and can't find any articles or
anyone that can tell me. I may have a service disabled or on Manual that
needs to be Automatic.

I don't know that.


Jim.