Free avast antivirus software for linux

HAVP (HTTP Antivirus Proxy) is a proxy with a ClamAV anti-virus scanner. HTTP Anti Virus Proxy aims are continuous, non-blocking downloads and smooth scanning of dynamic and password protected HTTP traffic.
Havp antivirus proxy has a parent and transparent proxy mode. It can be used with squid or standalone.
Main features:
- HTTP Antivirus proxy
- Scans complete incomming traffic
- Nonblocking downloads
- Smooth scanning of dynamic and password protected traffic
- Can used with squid or other proxy
- Parent proxy support
- Transparent proxy support
- Logfile
- Process change to defined user and group
- Daemon
- Use Clamav (GPL antivirus)
- Operating System: Linux
- Written in C++
- Released under GPL
Enhancements:
- Experimental support was added for chunked Transfer-Encoding, which fixes some broken sites.
- The IGNOREVIRUS configuration directive was added for whitelisting virus names.
- The CLAMBLOCKBROKEN configuration directive was added.
- Detection with AVG was improved.
- HAVP is killed if database reloading fails for Library Scanner.
- The URL is logged when a crashed scanner process is detected.
- The build system updated, adding the --prefix, --sbindir, --sysconfdir, and --localstatedir options.

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.

samba-vscan provides on-access scanning of Samba shares with ClamAV (clamd and libclamav), F-Secure AV, FRISK F-Prot Daemon, Kaspersky AntiVirus, OpenAntiVirus.org ScannerDaemon, mks AntiVirus, NAI/McAfee VirusScan, Sophos Sweep (via Sophie), Symantec AntiVirus Engine (via ICAP), and Trend Micro (via Trophie). It supports Samba 2.2.x/3.0.x.
samba-vscan currently is made of ten Samba VFS modules:
vscan-fprotd - for use with F-Prot Daemon
vscan-icap - for use with an ICAP anti-virus service, currently only Symantec AntiVirus Engine 4.x is supported (this is alpha code and not yet for production environment!)
vscan-kavp - for use with Kaspersky AntiVirus (kavdaemon) via Kaspersky KAV client C library. vscan-kavp is a stripped-down version from vscan-kavp of Ries van Twisk). For the full-featured version please see http://www.rvt.dds.nl
vscan-mks - for use with mks32 via mks_vir Daemon
vscan-oav - for use with OpenAntiVirus.org ScannerDaemon
vscan-sophos - for use with Sophos Sweep via Sophie (http://www.vanja.com/tools)
vscan-trend - for use with Trend Micro FileScanner / InterScan VirusWall via Trophie (http://www.vanja.com/tools)
vscan-clamav - for use with Clam AntiVirus Daemon (clamd) or libclamav (http://www.clamav.net)
vscan-nai - for use with NAI/McAfee uvscan
vsan-fsav - for use with F-Secure AntiVirus (daemon)
vscan-symantec - for use with Symantec Anti Virus Engine Note: the vscan-symantec odule will statically linked against the symantec library. This lib is not covered by GPL and the resulting vscan-symantec VFS module may infringe the GPL of Samba! Due this reason, the vscan-symantec module will only be build if --with-symantec flag is used for ./configure
Enhancements:
- NEW, VERSION, ChangeLog: updated
- icap/vscan-icap.c: bugfix
- Released samba-vscan 0.3.6b
-

The Qmail virus scanner (QScan) is a mail filter for Qmail that scans incoming messages using the Sophos Antivirus engine, immediately rejecting infected content.

It is designed to be minimalistic, yet extremely fast and secure, and uses multiple pipes instead of the traditional temporary files and privilege separation. It works with non-native versions of the virus scanner like under OpenBSD with Linux or FreeBSD emulation.


You must create a temporary directory to extract MIME attachments, and replace Qmails original qmail-queue program with Qscan. Quick way to achieve this for the impatients :

mkdir /var/qmail/qscan
chmod 700 /var/qmail/qscan
chown qmaild:qmail /var/qmail/qscan
ln /var/qmail/bin/qmail-queue /var/qmail/bin/qmail-queue-old

Now, lets compile and install Qscan :

./configure --help

./configure [your beloved flags]

make install-strip

The last step is to replace the original qmail-queue program with our filter :

rm /var/qmail/bin/qmail-queue
ln -s /usr/local/sbin/qscan /var/qmail/bin/qmail-queue

Depending on your local configuration, it may be needed or not, but start with doing it :

chown qmaild:qmail /usr/local/sbin/qscan
chmod 6711 /usr/local/sbin/qscan

After testing, if everythings ok for you, remove the setuid bit :

chown 0:0 /usr/local/sbin/qscan
chmod 711 /usr/local/sbin/qscan

Jsmtpd is a compact SMTP daemon (Email server), entirely written in Java. Jsmtpd project is basicly able to receive E-mail following the SMTP protocol, described in RFC 821. Each others functionnalities are implemented as plugin modules, allowing the core to remain small and easily understaindable.
As now, Jsmtpd is able to receive mail, check its recipients (ACL-SimpleACL plugin), check for viruses (filters-ClamAVFilter, connects to a ClamAV daemon), check for spam using the Java Jasen engine (filters-JasenAntiSpamFilter) or a spamassassin daemon, check senders via RBL plugin or blacklist plugin. Emails can be delivered localy using the mailbox writer (DeliveryServices-UnixMailboxWriter), or to a remote STMP server (DeliveryServices-RemoteSmtpSender). DNSQueries are also provided by a plugin (DNSJava).
Version 0.4 (Brinsop) has introduced two new extensions : TLS(SSL) support, and SMTP authentication.
Jsmtpd comes with three main services :
The receiver service : Its job is to listen for incoming STMP connection, chat with the client in order to receive E-mails according to ACL plugin.
The second service is the mail queue services. It holds the received mails (loaded or writen to disk). Whenever possible, it processes mails to the delivery service.
The delivery service is a filter plugin tree ending by a delivery service. A filter is basicly a piece of code that answers yes or not to an incoming email. Mails are then checked agains theses plugins, following a tree model. A the end of the chain, the mail is droped if it does not match the filters, or a delivery plugin is invoked to deliver the mail. For now, only two delivery services can be routed using the ACL plugin : local or remote mail.
Jsmtpds design is heavily based on plugins. Most functionnalities are implemented as plugins. Plugins interfaces are simple to understaind and implement. With minimal time spent learning Jsmtpd, you can rewrite how Jsmtpd handles :
Dns queries
Acces control list (who can do what on the runnning server)
Deliveries : you want to put your mail directly into your custom application ? Write a plugin !
IP filtering
Mail filtering
This server is designed to provide efficient ways to stop unsollicited mail or mail containing viruses. A Jsmtpd deamon cant be set as open relay ( youll have to write a plugin to do so ;).
Filtering spam can be done at two levels. Ip based filtering will reject connections from well known spammers or open relais smtp servers (ie misconfigured mail servers used by spammers to relay their mails). Content based filtering allows to check mail containing spam (using Spamassassin or Jasen) or viruses (using Clam Antivirus).
If you cant find a filter matching your needs, you can easily write your own and plug it in Jsmtpd.
Jsmtpd is intended to remain small, understaindable and (quite) fast. Without using filters plugin, minimal process is applied to the email data, providing best performances. If you need a more powerfull (in terms of functionnalities) email service solution, I recommend you to check out the jakarta James project and their mailet API.
This server runs over a Java Virtual Machine, and should make intrusions like buffer overflow more difficult to success.
Enhancements:
- In this release, code has been cleaned up and refactored (common-loggings by example).
- It includes several bugg fixes in ldap plugins and dns resolver mainly, and improved thread usage.
- New plugins have been added : maildir writer, lmtp delivery(experimental) and spf/greylist.