SSH tunnels

1. This tutorial helped understanding tunneling a little
   • Main example is:

      ssh -L 8888:localhost:7180 remote.server.com
     

     In this example we assume that remote.server.com has a website available like this: remote.server.com:7180. After entering the above command we can also access this website with address localhost:8888. This is very useful when for example we cannot connect to port 7180 because of network configuration in the remote.server.com.

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2. How signing of files/other information works
3. This information was very useful to understand ssh
4. SSH encryption description, ssh agent. Super good