A Squid is an application software released under GNU/GPL which acts as a proxy server as well as web cache daemon. Squid primarily supports protocols like HTTP and FTP and also other protocols like HTTPS, SSL, TLS, etc are well supported. The web cache daemon makes web surfing faster by caching web and DNS for frequently visited websites. Squid is known to support all major platforms including Linux, UNIX, Microsoft Windows, and Mac. The data stored by Squid is in ufs format. The Ufs is the old well-known Squid storage format.