Free anvir virus scan software for linux

AntiVirus Scanner is an anti-virus scanner for Endeavour Mark II that uses the ClamAV library (libclamav).

AntiVirus Scanner allows you to create a list of scan items for frequently scanned locations and features easy virus database updating, all in a simple GUI environment.

Antivirus Scan with F-Prot is a simple servicemenu for konqueror that allows to scan single or multiple files and folders using the F-Prot Antivirus. Antivirus Scan with F-Prot shows the result of the scanning in a textbox using kdialog. It can also show the progress of the scanning in a terminal.
I hope you may find it useful.
Comments or/and translations are welcome.
TO INSTALL: extract the content of the tarball and copy the file f-prot_virus_scan.desktop into ~/.kde/share/apps/konqueror/servicemenus (just for your user) or in /usr/share/apps/konqueror/servicemenus, /opt/kde/share/apps/konqueror/servicemenus... etc, depending on your distro, to make it system-wide.
This is only the service-menu, you need to have F-Prot antivirus installed on your system.
Enhancements:
- Added Danish translation by Kefeus

ScannerDaemon is the virus scanner of the OpenAntivirus project. You can send a filename to it via simple TCP and it will scan the file for viruses and tell you if the file is infected or not.
The ScannerDaemon listens on localhosts port 8127 for absolute filenames and absolute directorynames. It scans the files/all files in the directory and reports OK if no virus has been found or FOUND: if a virus has been detected.
You can start the ScannerDaemon simply by typing:
java -jar ScannerDaemon.jar
If you did not forget the Credo-files, it should come up and listen on port 8127. You can also give the name of the directory as a command-line parameter, like
java -jar ScannerDaemon.jar -credo.directory
Enhancements:
- Adaptions to new listener and filter scheme
- Bugfix: allow more than one signature file in one credo file
- Bugfix: close files used by UPXFilter
- Bugfix: wrong failure transitions
- Improvement: less memory consumption for nodes
- Improvement: UPXFilter scans uncompressed and compressed file

gadoyanvirus is a virus checker for qmail that works with the QMAILQUEUE patch by Bruce Guenter. gadoyanvirus scans incoming messages using the ClamAV anti-virus library.

Suspected messages are quarantined and a notification message can optionally be sent to the recipients.

Milter-virus is not a virus scanner. It is a wrapper that can be used with many commercial and freely available virus scanners. Milter-Virust is written completely in C, and requires (few skills??).
It is run-able with the Milter interface, but then will only scan for "double extensions".
If you wish it to scan for more, you need at Ripmime or other tools to extract files from MIME-encoded emails. You also need a (command-line) virus scanner.
The difference between this program and the original is that this is much more configurable via the config file. The original version has the advantage that it is simpler and easier to bugfix.
Enhancements:
- This is a large update.
- Many problems in the statistik module were fixed.
- Some spam protection features were included.

AVScan is an AntiVirus scanner front end for ClamAV.

A front end for the Clam AntiVirus scanner using Endeavour Mark II. Features a scan list for frequently scanned locations, freshclam update support, and command line calling from Endeavour.

Virge is mail scanner written in C, which replaces/substitutes procmail for a while, checks the incoming mail, and then sends the mail to the procmail. It will check mail for viruses and/or attachment names. Check the FEATURES/README/NEWS files for more details. Virge requires Sendmail and (optionally) AVPDaemon, Sophie or Trophie (to check attachments for viruses).
Virge replaces temporarily procmail. When new mail comes in, Sendmail will pass the contents of the mail to Virge. At that point, Virge performs set of checks:
Checks if the mail has attachments. If it does not, it sends it to procmail for delivery.
If mail has attachments, Virge creates temporary directory, unpacks attachments there, and asks AVP/Sophie/Trophie to scan the temporary directory for viruses. Virge was created with 2 things in mind: performance and security. Because of performance issues, it was not feasible to use any command line scanners like TrendMicro of McAfee ones.
AVP/Sophie/Trophie are instructed to scan attachments for viruses next. If it finds any viruses, mail is immediately isolated in a directory not (hopefully) accessible to anyone except administrators.
If no viruses were found, Virge will then perform attachment check, and see if any of the attachments are not allowed to be sent to the end user. A configuration file is consulted for list of extensions (or full filenames) that should not be allowed in. If any such attachments were found, tricky part comes - Virge will *hopefully* properly "rewrite" the whole email, and strip the attachments that are not allowed. Small notice is attached at the end of the mail, with names of stripped attachments. Mail is also isolated, in case poor overworked sysadmin ever gets some free time to take a closer look.
IMPORTANT: Please, keep in mind that Virge will *NOT* rewrite & send mails when virus has been found. I will *NOT* implement any such features, since it doesnt make any sense (I havent seen a mail with virus that actually had some valuable content in it for many months - maybe even years).
If AVP/Sophie/Trophie are not available (daemon is down), Virge will still deliver mails and annoy admins through syslog messages. Attachment check is still performed.
Users for which no checks should be performed can also be configured. Location of the file can be specified in the configuration file.
Virge is definitelly trying to not let any lame script kiddies abuse it in any way. It is trying to resist to race conditions, buffer overflows, and similar neat tricks. No guarantees, of course, that there are no security problems in Virge.
Virge tries to be as fast as possible, and not waste CPU time or any other resources. It is still possible to make it perform even better, although I presume it would be in 1-5% range. Will take some more time later, and try to fix all the small performance problems.
And yes - Virge *is* fast. I have made a complete Virge V1 in Perl some time ago, but it was absolute failure. Although I tried to use as little modules as possible and make it as fast as possible... it was crap. 2 minutes after I started a script that sends 3-5 mails per second, I started wondering "Why the hell cant I login to the mailserver anymore?". Perl is nice, but its not good for tools like this. Not at all (except if you have low traffic on your mailserver).
And Virge still needs a *lot* of testing. I have tried to test Virge with many different mail (MIME) formats and tried different tricks in order to bypass its decoding techniques (in order to send a virus or .exe to users), but it handles things pretty well. There are cases, though, when it is possible to trick librfc2045 and send attachments that dont get caught, but those attachments are violating RFCs anyway. If your mail client is so stupid to decode invalid/malformed attachments/mails - you deserved it. Dont use stupid mail clients then. Im not going to start adding all those crappy features into Virge that would let someone detect all possible tricks which can be used. Use good mail clients, dont rely on Virge to save you.
Main features:
- Virge can check every incoming mail for attachments, and can remove attachments that are considered dangerous.
- "Dangerous" can be defined:
- email with specific kinds of attachments (e.g., .EXE, .COM, etc.)
- email that contains a virus as identified by Sophie ( http://www.vanja.com )
- email that contains a virus as identified by trophie ( http://www.vanja.com )
- email that contains a virus as identified by AVPDaemon (http://www.avp.ch)
- Any combination of the above.
- Dangerous email can trigger:
- rewriting that removes virus.
- alert back to sender.
- alert to recepient.
- alert to system manager.
- rewrite to remove virus.
- All offending mail messages can be isolated for later reviewing.
- Written in C, so it is very fast, doesnt waste resources, and doesnt depend on a complicated perl installation (which is subject to breaking).
- Notification can be sent (configurable) to sender/recipient of suspicious/infected mail. Templates can be used to define the layout of the mail.
- Regular expressions can be used for filename matching
- Virge was made with security in mind, and should be hard to abuse
- Can be configured to fail open or fail closed if load on the machine goes too high.
- Virge 3.0 designed for easy integration with Postfix