can't ping between 2 local computers

[K. Abit]

Two computers and I can't ping between them, either way.

One is a 2003 Server. The other is an XP Pro. Both have subnet masks of
255.255.255.0 and gateways of 192.168.100.200 (a firewall). The 2003 Server
has a static IP of 192.168.100.201, and the XP Pro has a dynamic IP of
192.168.100.51. The DHCP server for the XP Pro box is the firewall on
..200, and the gateway is the same firewall. There are no rules that
prevent pings from one part of the LAN to another on the firewall and all
other machines on the same [switch connected to LAN port on firewall] can
ping each other just fine. So I don't think the firewall is to blame, and
the machines are on the same switch anyway.

If the 2 machines are on the same subnet, then I can't understand why
neither one can ping the other. ? What now?

 

[Pegasus \(MVP\)]

Two computers and I can't ping between them, either way.

One is a 2003 Server. The other is an XP Pro. Both have subnet masks of
255.255.255.0 and gateways of 192.168.100.200 (a firewall). The 2003
Server has a static IP of 192.168.100.201, and the XP Pro has a dynamic IP
of 192.168.100.51. The DHCP server for the XP Pro box is the firewall on
.200, and the gateway is the same firewall. There are no rules that
prevent pings from one part of the LAN to another on the firewall and all
other machines on the same [switch connected to LAN port on firewall] can
ping each other just fine. So I don't think the firewall is to blame, and
the machines are on the same switch anyway.

If the 2 machines are on the same subnet, then I can't understand why
neither one can ping the other. ? What now?

You need to tell us if you ping the machines by IP address
or by NetBIOS name. This makes a big difference! You
must also disable the firewall on the WinXP PC, and any
other PC-based fireall you might have.

Can the machines actually ping anything at all?

 

[K. Abit]

Two computers and I can't ping between them, either way.

One is a 2003 Server. The other is an XP Pro. Both have subnet masks of
255.255.255.0 and gateways of 192.168.100.200 (a firewall). The 2003
Server has a static IP of 192.168.100.201, and the XP Pro has a dynamic
IP of 192.168.100.51. The DHCP server for the XP Pro box is the
firewall on .200, and the gateway is the same firewall. There are no
rules that prevent pings from one part of the LAN to another on the
firewall and all other machines on the same [switch connected to LAN port
on firewall] can ping each other just fine. So I don't think the
firewall is to blame, and the machines are on the same switch anyway.

If the 2 machines are on the same subnet, then I can't understand why
neither one can ping the other. ? What now?

You need to tell us if you ping the machines by IP address
or by NetBIOS name. This makes a big difference! You
must also disable the firewall on the WinXP PC, and any
other PC-based fireall you might have.

Can the machines actually ping anything at all?

I am pinging by IP address. I understand the difference, thanks.

Machines can both ping other things but not each other.

I can try to disable the firewall on the XP machine, which is probably
enabled. The machine does not have a bunch of third party junk. What about
the 2003 Server? Would that respond to pings by default or are pings
ignored by default?

 

[Kurt]

Two computers and I can't ping between them, either way.

One is a 2003 Server. The other is an XP Pro. Both have subnet masks of
255.255.255.0 and gateways of 192.168.100.200 (a firewall). The 2003
Server has a static IP of 192.168.100.201, and the XP Pro has a dynamic
IP of 192.168.100.51. The DHCP server for the XP Pro box is the
firewall on .200, and the gateway is the same firewall. There are no
rules that prevent pings from one part of the LAN to another on the
firewall and all other machines on the same [switch connected to LAN port
on firewall] can ping each other just fine. So I don't think the
firewall is to blame, and the machines are on the same switch anyway.

If the 2 machines are on the same subnet, then I can't understand why
neither one can ping the other. ? What now?

You need to tell us if you ping the machines by IP address
or by NetBIOS name. This makes a big difference! You
must also disable the firewall on the WinXP PC, and any
other PC-based fireall you might have.

Can the machines actually ping anything at all?

I am pinging by IP address. I understand the difference, thanks.

Machines can both ping other things but not each other.

I can try to disable the firewall on the XP machine, which is probably
enabled. The machine does not have a bunch of third party junk. What about
the 2003 Server? Would that respond to pings by default or are pings
ignored by default?

Firewall on server 2003 must be disabled (or configured to allow replies
to pings) just like the XP Pro box.
....kurt