SCO

Yes, I can access both 192.168.1.1 and 10.0.0.138 by pinging them.

No, I mean can you login to the router?

What is the make/model of router?

Can you connect a standard Windows machine directly to a port on the router with a RJ45 cable?

If so, try entering the URL http://192.168.1.1

The router 192.168.1.1 gives me DHCP leasing and internet access to my windows computers, so I don't think that is the problem. I'm connected with the same cable that I'm trying to connect UNIX with right now on my windows notebook to check the cable.

For me this identifies the SCO box as the problem.

If you have an internet browser on the SCO box what happens if you enter URL:

http://192.168.1.1

???

Do you get the router's login page?

My last active SCO administration role was many years ago but there are some very knowledgeable SCO experts on this forum. jgt is a big SCO forum contributor.
This won't be rocket science for the right expert.

Assign the SCO system a static IP address outside the range of DHCP addresses in the router.
Set the default gateway to the ip address of the router.
Edit /etc/resolv.conf so that it looks something like:

Code:

domain local.com        
nameserver 142.77.2.36  
nameserver 192.168.1.1  
hostresorder local bind 
search local.com

Test it by

Code:

# nslookup unix.com            
Server:         142.77.2.36    
Address:        142.77.2.36#53 
                               
Non-authoritative answer:      
Name:   unix.com               
Address: 4.59.125.171          
                               
#

Sorry for the delay in answering, I was playing in traffic today.