Free https proxy software for linux

WebGrab is a tool that acts as a CGI proxy. It simulates a Web browser and grabs data from external programs, and can exchange individual words or whole blocks.

The project can be run standalone or in conjunction with phpCMS.

HTTP Proxy Client is the small set of libraries and scripts, which provides transparent access to Internet via HTTP proxy for programs, which uses TCP/IP for communication.
The list of programs includes: telnet, ftp, licq, cvs, smth else? Project implements dynamic library, that can be preloaded before program run.
The library substitutes some system calls (connect(), gethostbyaddr(), gethostbyname()), with calls, which makes TCP/IP connection through HTTP proxy. This allows client programs behind HTTP proxy work with Internet without limitations.
At the moment tested on i386 Linux, i386/sparc Solaris.
Enhancements:
- While using dotted address, applications will attempt to connect regardless DNS lookup result.

IMAP Proxy server is a caching IMAP proxy server. It was written to compensate for webmail clients that are unable to maintain persistent connections to an IMAP server. Most webmail clients need to log in to an IMAP server for nearly every single transaction.

This behaviour can cause tragic performance problems on the IMAP server. imapproxy tries to deal with this problem by leaving server connections open for a short time after a webmail client logs out.

When the webmail client connects again, imapproxy will determine if theres a cached connection available and reuse it if possible.

How does imapproxy keep track of which server connection is for which user?

Upon the first successful login to the real IMAP server (through the proxy), imapproxy fills in a little record that contains the username, an md5 digital signature of the password and the server socket descriptor thats being used.

After you log out and then log back in again, imapproxy just has to find a record that matches your username and password. These records are stored in a hash table (with the username being the hash key) in memory, so the lookups are pretty fast.

Can IMAP Proxy support multiple backend servers?

If you want IMAP Proxy to be able to proxy to multiple backend IMAP servers, you can run multiple instances of IMAP Proxy and make sure each instance is looking at a different configuration file.

Before you do this, take a look at perdition which appears to have been designed with this specific task in mind.

Antispyd is a HTTP/HTTPS proxy server designed to be fast, efficient, modular and secure. Its written in pure C and uses a simple and customizable configuration file. Its POSIX compliant and has been developed under Gentoo/Linux.
The server is designed with a modular software architecture, the following filters can be used and configured independently :
Url Filtering
Mime-type Filtering
Web-Identity Masking
Shellcode and Zero-day threat Filtering
Cookie Removal
Simple Signature based Filtering
Inappropriate content Blocking
Pop-up Deleting
So, Antispyd can be used to satisfy some current companys security needs like :
Web Usage Policy establishment
Instant Messaging control
Peer-to-Peer Filtering
Malware Protection
Enhancements:
- This release provides a major improvement of the signature based filtering engine (the BLOCK_SIGN filter) in terms of both performance and functionality.
- The signatures are now stored in a 3-Tree to enhance the matching of each HTTP message.
- This filtering can be performed on each HTTP messages content.
- A signature can use the hexadecimal array of a byte to specify a fields value

Open Proxy Scanning Bot (formerly NeoBOPM) is a loadable module for the NeoStats IRC Services. Open Proxy Scanning Bot scans clients connecting to the IRC network for insecure proxies, and also looks up a DNS blacklist for previously registered insecure proxies.
It caches the results of scans to increase perfomance, and with multiple bots, can be configured for load balancing.
It currently supports Hybrid7, Unrealircd, LiquidIRCd, Bahamut, QuantumIRCd, MysticIRCd, NeoIRCd, and Ultimate, with support for other ircds planned.
Enhancements:
- The code was updated to support NeoStats 3.0 Alpha 3.
- The DNS blacklist code was split out to a new module, BLSB.
- Several issues regarding NeoStats consuming 100% CPU when using OPSB have also been corrected.
- gcc 4.0 support was fixed.

MM3-WebAssistant is a proxy offline browser that archives all web pages you have visited online. Offline too each page is available with its URL. There is no difference between browsing the internet and browsing the archive.
You can even use your bookmarks and favorites list offline without any changes. When online the utility updates your cached web pages and adds new pages automatically. This feature distinguishes the utility from most other offline browsers.
Your benefit:
Reduces the cost of web time, the work and pressure of knowing what to save, and the necessity for repeating browsing sessions looking for something that was missed. You can access the information needed whether or not the server or dial-up is available.
The reliability is increased with that. Mobile users have the flexibility of accessing information from the web without having to worry about expensive access points. With the proxy offline browser you get a more easy and effective use of the internet.
Main features:
- All web pages visited are archived.
- There is no difference between on- and offline mode for the user.
- Links to resources of cache archives are marked for quick navigation.
- Highlighting the changes between HTML pages in internet and archive.
- Quick search in the archives and marking the search words in the hitlist and in every hit.
- Hierarchical archive structure represents a mirror of every web site.
- Interactive navigation and display of the hierarchical archive structure.
- Topic-specific archiving of web pages.
- Exchange of the archives also between different operating systems possible.
- Filtration of unwanted contents.
- Supports the protocols HTTP, HTTPS and FTP.
- Caches the domain and IP address (DNS)
- Available on many operating systems by use of Java[TM] technology.
- Operating Systems: Windows 9x/ME/NT/2000/XP, Linux, Unix, Solaris, OS/2, Mac OS X.
- Supplied with a detailed manual, a simple and completely comprehensive installation and deinstallation.
- MM3-WebAssistantWebAssistant - Proxy Offline Browser - Private is available as freeware for private use.
- MM3-WebAssistantWebAssistant - Proxy Offline Browser - Professional is an extended, faster and qualitatively better edition (differences: between editions).
Supplied with a detailed manual, a simple and completely comprehensive installation and deinstallation.
The reader is an ideal addition to every browser!

The Zaval Proxy Suite is an easy-to-use solution that allows monitoring TCP-based protocols, such as HTTP, NNTP and others. It is extremely useful in software development and can be used as a debug tool. Another area of appliance is multiple connections logging with proxy facilities. As soon as its a pure java solution it can be used almost everywhere.

The Zaval Proxy functions as a proxy and transfers data between the server and the client writing incoming and outgoing traffic into log files. So you can see these raw data as is.

On start the Zaval Proxy Suite goes through configuration file and creates the specified number of proxy servers and the shutdown server.

"Proxy server" is a server socket listening on the specified port. When the client is connected proxy connects to the target server and transfers data between them logging entire traffic. On each connection 2 files are created - xxx-input (request data from the client) and xxx-output (response data from the server). The "xxx" means here the sequential number of the connection for the proxy server. The traffic is logged into the separate directory for each proxy.

Shutdown server is needed to close all open connections correctly and close the program.

So, in the particular case you should specify address of proxy server in client application (web browser, for example) and address of the target server in the proxy configuration file. You can create any number of proxy servers that run at the same time, however, they should use different port numbers.