Forward HTTP through an intermediary server (Local Port Forwarding)
This will tunnel HTTP requests to one given domain and port through an intermediary SSH server:
ssh -L 8080:targethost:80 tunnelhost
http://localhost:8080 will now connect you to http://targethost:80, tunnelling all data through tunnelhost via SSH.
Note that the connection between tunnelhost and targethost will still be unencrypted in this example.
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Test whether Perfect Forward Secrecy (PFS) is enabled on a server (using OpenSSL)
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openssl s_client -connect makandra.com:443 -cipher ECDHE-RSA-RC4-SHA
You should see something like the following:
...
Debug SAML in development using a local keycloak server
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Read your mail in networks that forbid e-mail traffic
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Using ngrok for exposing your development server to the internet
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Install a local Gemfile on a remote server
Call with the server's hostname (and user if you have no SSH agent), e.g.
install-gems-remotely my.server.com
# or without agent:
install-gems-remotely me@my.server.com
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How to find out what is running on a port on a remote machine
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You can use nmap to find out what service is running behind a given port, and most often see some details about it. This can be helpful if servers don't offe...
Make Capistrano use SSH Key Forwarding
When deploying code with Capistrano (depending on your configuration) at some point Capistrano tries to check out code from your repository. In order to do so, Capistrano connects to your repository server from the application server you're deploy...