What is a firewall, and what do proxies and socks have to do with them?

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Jeffrey Johnson is a legal writer with a focus on personal injury. He has worked on personal injury and sovereign immunity litigation in addition to experience in family, estate, and criminal law. He earned a J.D. from the University of Baltimore and has worked in legal offices and non-profits in Maryland, Texas, and North Carolina. He has also earned an MFA in screenwriting from Chapman Univer...

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UPDATED: Jul 15, 2021

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A computer “firewall” does the same thing an automotive firewall does. A car’s firewall separates the potentially explosive and/or dangerous engine from the driver. A computer firewall separates one computer (or many computers on a network) from other computers on the other side of the wall. By creating a firewall, you can prevent the computers on either side from community, even when there’s a physical connection (like a phone line, or an Ethernet link) between them.

Proxies and Socks are different software ways to get through a firewall, preferably authorized by the creator of the firewall. Proxies enable access to computers from within the firewall. Proxies establish the protocols that are required in order to allow access to a protected server from a computer within the firewall structure. According to Netscape, “Proxies are generally preferred over Socks for their ability to perform caching, high-level logging, and remote access.”

Socks let computers on the inside of a firewall launch to access the Internet. This enables the computer on the inside of a firewall to communicate with computers on the outside of the firewall – an authorized port through which the protected computer can reach to the Internet for data retrieval.

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