External IP and browsing computers in LAN

M

multiwitamina1

Hello,

I have a problem: my computer (let's name it 'external' with winXP
Prof. ) is connected to LAN phisycally, but has external IP. The
problem is I cannot browse LAN neighbourhood comps from it (LAN mask is
255.255.255.0). I can ping one of them by IP (for example if I do ping
10.10.150.15, then I got the respond, but if I do ping internal, where
'internal' is a name of computer with IP 10.10.150.15, I got no
respond). Also typing their ip in browser doesn't help (not to mention
about trying to find them in 'my network places') - it seems that pings
are the only messages that arrive to those computers.

Also the other computers from LAN can ping me, but I'm invisible in
LAN.

Is there any way for configuring windows/network card to be a normal
member of LAN but with external IP?

Thank you for your help
 
S

Sinner

Hello,

I have a problem: my computer (let's name it 'external' with winXP
Prof. ) is connected to LAN phisycally, but has external IP. The
problem is I cannot browse LAN neighbourhood comps from it (LAN mask is
255.255.255.0).
Is there any way for configuring windows/network card to be a normal
member of LAN but with external IP?


A computer can only be connected to one network at a time through a single
NIC.
 
S

Steve Urbach

Hello,

I have a problem: my computer (let's name it 'external' with winXP
Prof. ) is connected to LAN phisycally, but has external IP. The
problem is I cannot browse LAN neighbourhood comps from it (LAN mask is
255.255.255.0). I can ping one of them by IP (for example if I do ping
10.10.150.15, then I got the respond, but if I do ping internal, where
'internal' is a name of computer with IP 10.10.150.15, I got no
respond). Also typing their ip in browser doesn't help (not to mention
about trying to find them in 'my network places') - it seems that pings
are the only messages that arrive to those computers.

Also the other computers from LAN can ping me, but I'm invisible in
LAN.

Is there any way for configuring windows/network card to be a normal
member of LAN but with external IP?

Thank you for your help
XP Pro allows a "Alternate Configuration" (manual) of IP addresses.
It is on the second tab of the TCP/IP properties for your network
card.
This allows a alternate IP address on the SAME network card.
You must configure all settings by hand (no DHCP here)

Example: You have a DSL Router that has a Static range of addresses to
allow easy outside users to connect. The router is a DHCP server.
You set your Network cards TCP/IP to automatic.
You also have a few computers and printers that do not accessed be
accessed, the outside WAN , They belong to a manual IP range of
192.168.99.xxx
You would configure the alternate IP to a unused address in this range
and set the subnet mask to 255.255.255.0

Do all computers belong to the same workgroup?
Steve
 
E

Enkidu

Sinner said:
A computer can only be connected to one network at a time through a single
NIC.
A single NIC may have more than one IP address. Therefore it can be
connected to two logical networks at the same time. However it's hard to
understand from the OP's description how he has it connected up. If the
PC has an 'external IP', he may have an ADSL card in the PC and also a
NIC card. But that's just a guess.

Cheers,

Cliff
 

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