Tcpwrappers in hosts.allow and spoofing IP addresses
We've added some rules to the hosts files to allow only certain ranges of IP addresses from a consulting company to have SSH access to a Linux machine. Another person was worried the someone could just "spoof" one of that company's IP addresses.
I thought "spoofing" your IP address was just masking it through proxy servers - not being able to just make it someone elses.
Is it easy (if known) to change your IP address and "fool" the rules from the hosts files?