Need access to a web site, tucked behind a firewall?  Do you already have a public SSH server set up to allow access, but not sure how to tunnel your HTTP session?  It’s easy!

ssh -N -D 127.0.0.1:8000 <user>@<ssh server fqdn>

That command sets up a SOCKS4/SOCKS5 proxy.  Just configure your Browser/OS settings to use 127.0.0.1:8000 as a SOCKS proxy, and you can now access any site that your SSH server can reach.