I keep some in my bag for when people ask to borrow one. It sucks so bad they aren’t tempted to keep it. If they do keep it, they did me a favor

sftp

All my machines have my keys, nothing to set up, nothing to tear down.

Some of those signatures are like a CVS receipt.

When I’m on a chain with the corporate office:

It will be reachable by LAN. The gateway address is the router you use to get to addresses outside the subnet mask you set.
First search result explains it more thoroughly if you’re interested
https://www.networkcomputing.com/ip-subnetting/ip-addresses-subnet-masks-and-default-gateways

If you set the wrong gateway in the static IP settings or a reserved DHCP lease, it won’t be able to get out.