Does squid proxy support HTTPS?

The Squid Proxy supports HTTP, HTTPS and SSL.

Squid Proxies are very easy to set up on a Linux or Unix server. If you have Apache, Netscape or Apache running on the same box as Squid Proxies, they will transparently proxy requests for SSL connections. However, if you use a browser like Internet Explorer or Mozilla, you need to use the Microsoft SSL 3.0 Library and the Java Secure Socket Extension (JSSE). If you are using Squid Proxy in a Windows environment, then you will need to install the OpenSSL-Win32.

If you are using Netscape as your browser, you will need to set up a proxy object for the default network setting. Step 1: Start Squid Proxy. You can start Squid Proxies on a Linux or Unix box. This is a simple command that starts squid and listens on port 3128 on TCP/IP Protocol: Squid 3.12 running on SunOS 4.x with Apache as the webserver

Step 2: Configure Squid. For Squid to listen on port 3128 on TCP/IP Protocol, you will need to edit the /etc/squid.conf file.

Squid listens on TCP port 3128, therefore if you wish to use another port number, you will need to change the following lines in the squid.conf file to specify the port number the server listens on for the web server. In this example, the web server listens on port 80.0 Library

You need to install the Microsoft SSL 3.

How to increase proxy cache size in Squid?

I have an Apache / Proxied via Squid Server one VM and some apps (like Java app server, Tomcat server etc.) on other VM. Both VMs are under VMware VPS. The VM that has Squid is configured to use proxycache directive to increase performance of applications deployed on it.

Since I need a bigger cache size for this VPS than the physical RAM, what is the procedure I have to follow to increase it? I'm not sure if the steps mentioned in this blog are relevant to my case as I use different OS as that blog. Is the squid cache size limited by VM memory size or is there a limit for it? Is there any other way to achieve larger cache without decreasing the number of proxy requests by limiting the total VM's RAM size? The proxy cache directive looks like. Cachedir /path/to/cachedir max-size . And the /path/to/cachedir size is set in bytes in VMware VMs. You have three options. A) Increase the maxsize - in your case 64M, that gives you a proxy cache that is just slightly bigger than RAM. It will make use of the cache disk at some point (this disk is a RAID array) b) Do not cache - this means you do not cache anything and rely on your apps to cache or to use something like memcached (if you have access to it).

What is the alternative to squid proxy?

I mean squid proxy is not supported on many sites.

So, what is the alternative? My project has many pages with dynamic content and I was using squid to cache my pages for faster access. It was working fine but I read a blog which mentioned that Squid proxy doesn't work on all sites. Is there any alternative to squid proxy?
Please help me to find the answer for this question. The short answer: No. The longer answer: You have three options: Use a HTTP Proxy. Use an HTTP cache. Use a CDN. But your question is not very clear. Could you elaborate more?

Is squid proxy a forward proxy?

I would like to setup squid for caching and forward all internet traffic to a particular ip.

Squid listens on 80 port and forward 80 port to 192.168.100. If I configure the ip as http proxy, will that be a forward proxy? If not what kind of proxy it is?
Thanks. Squid does NOT automatically act as a forward proxy. The only way to turn it into a forward proxy is to enable proxynextupstream. However, Squid is not even a proxy by default. It simply listens on an open port and just passes all requests through itself.

What you are describing would be a transparent proxy. Squid is a good implementation of a transparent proxy, but there are other (much better) free solutions available.