Proxy for Linux

1. Enable proxy through dynamic port forwarding in ssh (the sockets proxy port is 5000)

   # Replace 'user' with your username and 'hostname' with the remote host address
   ssh -vv -N -D 5000 user@hostname
   

   Then you can set environment variables to route all your terminal traffic through the proxy.

   export http_proxy="socks5h://127.0.0.1:5000"
   export https_proxy="socks5h://127.0.0.1:5000"
   

   This will ensure that most command-line tools (such as wget, curl, git, etc.) use the SOCKS5 proxy by default.

2. apt proxy

   Assume the proxy is on localhost at port 5000, using the SOCKS5 protocol.

   1. -o option

      sudo apt -o Acquire::http::proxy="socks5h://127.0.0.1:5000" update
      

   2. configuration file /etc/apt/apt.conf

      Acquire::http::proxy "socks5h://127.0.0.1:5000/";
      Acquire::ftp::proxy "socks5h://127.0.0.1:5000/";
      Acquire::https::proxy "socks5h://127.0.0.1:5000/";
      

3. curl proxy

   Use the configuration file ~/.curlrc or the command line option -x

   curl -x socks5h://localhost:5000 -L -O <url>