First invoke ssh, login to your home machine and ask it to setup a SOCKS proxy: ssh -D 8080 tell curl (or your browser, or both) to use this new SOCKS proxy when you want to access the Internet: curl -socks5 localhost:8080 This will effectively hide all your Internet traffic from your friends snooping and instead pass it all through your encrypted ssh tunnel. If you sit at your friends house, you can open a SOCKS proxy to your home machine and access the network via that. Or download FTP over the SOCKS5 proxy at socks5.example port 9999: curl -socks5 socks5.example:9999 Useful trick!Ī very useful trick that involves a SOCKS proxy is the ability OpenSSH has to create a SOCKS tunnel for us. Remember that –socks5 implies that curl resolves the host name itself and passes the address to to use to the proxy. Examplesįetch HTTPS from over the SOCKS5 proxy at port 1080. Or with GSSAPI, so curl also supports -socks5-gssapi and friends. SOCKS authenticationĪ SOCKS5 proxy can also be setup to require authentication, so you might also have to specify name and password in the -proxy string, or set separately with -proxy-user. If you use a socks5:// scheme, curl will go with SOCKS5 with local name resolve but if you instead use socks5h:// it will pick SOCKS5 with proxy-resolved host name. This is because starting in that release, you can now specify the proxy protocol directly in the string that you specify the proxy host name and port number with already. The -socks5 option is basically considered obsolete since curl 7.21.7. You’d instead use -socks5-hostname if you want the proxy to resolve it. The -socks5 option makes curl itself resolve the name. For SOCKS4, a SOCKS4a version was created that has the proxy resolve the host name and for SOCKS5, which is really the topic of today, the protocol has an option that lets the client pass on the IP address or the host name of the target server. Both alternatives exists for both SOCKS versions. One peculiarity with SOCKS is that it can do the name resolving of the target server either in the client or have it done by the proxy. When you want to reach services on Tor, or the web through Tor, you run the client on your machine or local network and you connect to that over SOCKS5. One of the more known services that still use SOCKS is Tor. curl supports both and the newer version of these two, SOCKS5, is documented in RFC 1928 dated 1996! And yes: they are typically written exactly like this, without any space between the word SOCKS and the version number 4 or 5. SOCKS4 is the predecessor protocol version to SOCKS5. SOCKS is one of the proxy protocols curl supports. A middle man/server that we use to get us what we want. ProxyĪ proxy, often called a forward proxy in the context of clients, is a server that the client needs to connect to in order to reach its destination. ![]() It takes an argument and that argument is the host name (and port number) of your SOCKS5 proxy server. You can download it as portable application or install it.Whatever you choose, you should start it,and at the initial screens,as host name enter your server’s IP, here it is 104.236.207.-socks5 was added to curl back in 7.18.0. In Windows, we can easily set an SSH tunnel by using a well-known SSH client called Putty.Putty can be downloaded from this site: ![]() For this tutorial, I choose CentOS 6.9, 圆4 version, but I have also tested it on Ubuntu 14.05 圆4 and it works without any modification. ![]() You need to have a VPS server available in the cloud,which you can access via SSH (you need an IP and root user’s password).I use VPS provider DigitalOcean, because of it’s simplicity and multiple available Linux distributions, it’s versions, and different 32/64 versions for some of them. I will show how to set a SOCKS5 connection using a linux server in the cloud and your browsers. It has older version 4 and new version 5, which support some new capabilities, like client authentication,UDP packages and server-side named resolution. It reaches the proxy server, which gets the web page on client’s behalf,and hands it back to him.It is not limited to HTTP traffic only, like Squid proxy server, but can proxy any TCP traffic. And then, there is something called SOCKS protocol which actually makes a tunnel via a proxy server,through which our requests are directed.
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