![]() ![]() It also assumes that you have configured your trusted network to provide SSH access from outside the network. It also assumes that you have access to a computer at home or on another trusted network, running a BSD UNIX, Linux-based, or other UNIX-like operating system with OpenSSH installed, as described in the previous secure Web proxy article. This article assumes you have installed PuTTY and the Mozilla Firefox Web browser on a Microsoft Windows laptop from which you wish to connect to a secure proxy. A direct encrypted connection between a laptop on an unsecured wireless network and a proxy server on a secured network that then relays HTTP requests to the Web can provide a much more secure connection for Web browsing than simply sending HTTP requests directly from the laptop through the wireless network to the Internet at large. You can use an encrypted connection to a secure proxy on a network that you know to be better protected than the public wireless network you’re using.Ī proxy is another system through which some network travel can be forwarded, making it seem to the Internet as though the proxy server is the actual source of the network traffic.You can simply avoid engaging in any online activity that involves logins or other transmission of sensitive data - including e-mail addresses that you wish to protect from spammers and phishers.There are two very simple solutions to the problem: Why?Īs I pointed out in the previous article, Web access through public wireless networks can be dangerous because of the danger of malicious security crackers and would-be identity thieves listening in on your Web traffic. ![]() This time, I’ll show you how to do the same thing on Microsoft Windows using PuTTY - probably the single most popular SSH client available for Microsoft’s operating system platforms (and also available in the software management systems of many free UNIX/Linux systems). Last month, I wrote about using OpenSSH as a secure Web proxy on UNIX and Linux systems. This time, I'll show you how to do the same thing on Microsoft Windows using PuTTY - probably the single most popular SSH client available for Microsoft's operating system platforms (and also available in the software management systems of many free UNIX/Linux systems). This means you won’t be able to get any SSH traffic over them, only actual HTTPS traffic.Last month, I wrote about using OpenSSH as a secure Web proxy on UNIX and Linux systems. You can also try to be clever and use a less conspicuous port such as 443, but these are often subject to protocol detection on a firewall. After this restart sshd: systemctl restart rvice To do this (on 99% of Linux installations at least) open a CLI window and edit the /etc/ssh/sshd_config config file, add following lines: Port 22Ĭhange the port 10022 to any port you find to be open. Often corporate networks don’t allow port 22 going out, so you can change the config on your server to listen on a different port. Go to one of the million “what is my IP?” websites, it should show the IP from your server. In Firefox:ĭon’t forget to change the 8080 if you changed it in the previous step. Now go to your browser and change the proxy settings to use the SOCKS proxy. Saving the session is useful so you don’t have to do this every time you open up PuTTY. After this step, go back to Session and do the following: Instead of 8080 you can type in any local port, but higher port numbers (>1023) are required as the lower ports require administrative access. Navigate to Connection -> SSH -> Tunnels and do the following: If you get a warning about a private key or password prompt you have everything you need to setup a SOCKS tunnel. ![]() To test this, you’ll need to run PuTTY and see if you can open a SSH session to your server, use following settings: In corporate environments typically internet connectivity is impossible except from the corporate proxy to the outside. This is often deployed on corporate devices. If you do not get an error: great! If Applocker prevents you from running it, you might get stuck here. To check if you can run PuTTY, simply download “putty.exe” from the official PuTTY download page ( direct link to putty.exe) and run it. A server with shell access (SSH) enabled.Connectivity to the internet that is not inspected by any “smart” devices.Whether or not you can use a SOCKS proxy is highly dependent on your environment: is this a home PC behind a simple router, a work computer behind the corporate firewall or your school issued laptop on a public WiFi? There are three basic things you need: ![]() Besides the obvious use-cases, this can often mean a significant impact on your browsing speed as it allows your traffic to exit from a different geographical location. Using a SOCKS proxy allows you to encrypt all your web traffic between your machine and the proxy server, making it impossible for any local devices to inspect your traffic. ![]()
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