How can I monitor my 2nd computer?

[bruce]

You said your modem/router is using 10.1.1.1. Do you happen to know the subnet mask associated with that address? You can probably learn more about the DHCP configuration if you log on to the modem -- but you may or may not have the required password.

[Volnaiskra]

INTERNET:
WAN IP: 124.170.16.197
Subnet Mask: 255.255.255.255
Gateway: 203.215.7.251


GATEWAY:
IP Address: 10.1.1.1
Subnet Mask: 255.255.255.0
DHCP Server: Enabled
Firewall: Enabled
UPnP: Enabled
Wireless: Enabled

INFO:

Numbers of DHCP Clients: 6
LAN MAC Address: 78:A0:51:11:E0:4A
Wireless MAC Address: 78:A0:51:11:E0:4B
WAN MAC Address: 78:A0:51:11:E0:4C

[bruce]

IP Address: 10.1.1.1
Subnet Mask: 255.255.255.0

That subnet mask means that the actual range used is 10.1.1.0-10.1.1.255. Address 10.1.1.255 is reserved for a broadcast to that LAN so it might be needed. I can't see any reason not to enable the entire range even though you only have three hosts. None of those addresses will be forwarded by your router.

[Volnaiskra]

Ok, thanks bruce. I'll try 10.1.1.0-10.1.1.255