Ask Linux.com: Startup commands, cloning, and anti-virus software
Fri, 25 Apr 2008 15:00:00 GMT
In this week's peek inside the Linux.com discussion forums, we'll learn how to schedule commands to run every time at system start-up and what the Linux equivalents are for the disk cloning powers of Symantec Ghost. We'll also see a discussion about anti-virus software options for Linux, and whether or not they are worth the trouble to install. Plus, you'll get your chance to chime in with answers to tricky unsolved problems with virtual consoles and distributed filesystems.
Greetings To All!
I am new in supporting Linux and recently I was tasked to find out the following information and am not sure how to find the answers, hence this posting... I am running Redhat Enterprise Server 5.4 I realize this is a Redhat specific question, but it pertains to all of our... (7 Replies)
Can anyone tell the best free antivirus for Linux? I'm using RED HAT 9.0 & want to install antivirus for it.
So if anyone has any suggestions of where to get that antivirus, that would be great! (2 Replies)
Greetings
I just installed Ubuntu 9 on my computer and need to know what anti-virus software to use. I have been using Avast anti-virus on my other comps for years and really like it. I have not tried it with Ubuntu yet but it says for Windows based systems.
Any ideas are appreciated
Thanks... (5 Replies)
I used to have trendmicro I used it for free when I worked with a previous company, when I left I had to uninstall it and switched to using Zone Alarm.
I tell you on some days I really want to pull my hair out when my PC really works like a snail and sometimes really so unresponsive for up to... (20 Replies)
Hi all.
Iam using AVG antivirus personel edition, and i can only set it to run at one time only. Iam running it on a Win98 machine. is it possilbe to write a Perl script or c++ script to set it up to run at 12pm and 3pm and 6pm ??? (1 Reply)
:(
Is there anyone know the anti-spam and anti- virus package software list for Unix !!??
Where can I find that, I have no idea in searching through the internet! (2 Replies)
VFS_SCANNEDONLY(8) System Administration tools VFS_SCANNEDONLY(8)NAME
vfs_scannedonly - Ensures that only files that have been scanned for viruses are visible and accessible to the end user.
SYNOPSIS
vfs objects = scannedonly
DESCRIPTION
This VFS module is part of the samba(8) suite.
The vfs_scannedonly VFS module ensures that only files that have been scanned for viruses are visible and accessible to the end user. If
non-scanned files are found an anti-virus scanning daemon is notified. The anti-virus scanning daemon is not part of the Samba suite.
Scannedonly comes in two parts: a samba vfs module and (one or more) daemons. The daemon scans files. If a certain file is clean, a second
file is created with prefix .scanned:. The Samba module simply looks if such a .scanned: file exists, and is newer than the pertinent file.
If this is the case, the file is shown to the user. If this is not the case, the file is not returned in a directory listing
(configurable), and cannot be opened (configurable). The Samba vfs module will notify the daemon to scan this file.
So what happens for the user in the default configuration. The first time a directory is listed, it shows files as 'file is being scanned
for viruses, but after the first time all files are shown. There is a utility scannedonly_prescan that can help you to prescan all
directories. When new files are written the daemon is notified immediately after the file is complete.
If a virus is found by the daemon, a file with a warning message is created in the directory of the user, a warning is sent to the logs,
and the file is renamed to have prefix .virus:. Files with the .virus: prefix are never shown to the user and all access is denied.
This module is stackable.
CONFIGURATION
vfs_scannedonly relies on a anti-virus scanning daemon that listens on the scannedonly socket (unix domain socket or UDP socket).
OPTIONS
scannedonly:domain_socket = True
Whether to use a unix domain socket or not (false reverts to use udp)
scannedonly:socketname = /var/lib/scannedonly/scan
The location of the unix domain socket to connect to
scannedonly:portnum = 2020
The udp port number to connect to
scannedonly:scanhost = localhost
When using UDP the host that runs the scanning daemon (this host needs access to the files!)
scannedonly:show_special_files = True
Whether sockets, devices and fifo's (all not scanned for viruses) should be visible to the user
scannedonly:rm_hidden_files_on_rmdir = True
Whether files that are not visible (.scanned: files, .failed: files and .virus: files) should be deleted if the user tries to remove
the directory. If false, the user will get the "directory is not empty" error.
scannedonly:hide_nonscanned_files = True
If false, all non-scanned files are visible in directory listings. If such files are found in a directory listing the scanning daemon
is notified that scanning is required. Access to non-scanned files is still denied (see scannedonly:allow_nonscanned_files).
scannedonly:scanning_message = is being scanned for viruses
If non-scanned files are hidden (if scannedonly:hide_nonscanned_files = True), a fake 0 byte file is shown. The filename is the
original filename with the message as suffix.
scannedonly:recheck_time_open = 50
If a non-scanned file is opened, the vfs module will wait recheck_tries_open times for recheck_time_open milliseconds for the scanning
daemon to create a .scanned: file. For small files that are scanned by the daemon within the time (tries * time) the behavior will be
just like on-access scanning.
scannedonly:recheck_tries_open = 100
See recheck_time_open.
scannedonly:recheck_time_readdir = 50
If a non-scanned file is in a directory listing the vfs module notifies the daemon (once for all files that need scanning in that
directory), and waits recheck_tries_readdir times for recheck_time_readdir milliseconds. Only used when hide_nonscanned_files is false.
scannedonly:recheck_tries_readdir = 20
See recheck_time_readdir.
scannedonly:allow_nonscanned_files = False
Allow access to non-scanned files. The daemon is notified, however, and special files such as .scanned: files. .virus: files and
.failed: files are not listed.
EXAMPLES
Enable anti-virus scanning:
[homes]
vfs objects = scannedonly
scannedonly:hide_nonscanned_files = False
CAVEATS
This is not true on-access scanning. However, it is very fast for files that have been scanned already.
VERSION
This man page is correct for version 4.0.0 of the Samba suite.
AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Scannedonly was developed for Samba by Olivier Sessink.
Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed.
Samba 4.0 06/17/2014 VFS_SCANNEDONLY(8)