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Forum: Security

Post here for help with Linux security issues: antivirus, firewalls, encryption, vulnerabilities, etc

  1. Sticky Thread Sticky: A short guide to Linux security

    Here at we are often asked about the potential threat of a virus or malware attack. This short guide is designed to answer some of...

    Started by fingal, 02-25-2006
    • Replies: 1
    • Views: 72,377
    01-11-2010 Go to last post
  1. IPTables - Block IP for x Seconds

    Hello, I would like to know how i can ban IP's for a certain amount of seconds via the IPtables firewall. I hope you can help. Thanks!

    Started by umarsa, 10-26-2009
    • Replies: 3
    • Views: 2,646
    02-14-2010 Go to last post
  2. How to Only permit specific users FTP Login

    Hello, I have some hackers trying to get in through FTP login. They normally use users who do not exist. The FTP usernames we have are unique and...

    Started by chep, 06-07-2009
    • Replies: 3
    • Views: 2,195
    02-14-2010 Go to last post
  3. Preventing an account from being locked out...

    Hello... sorry if I am posting this in the wrong forum...since it deals with both Linux security and RHEL... First off...this is a customer...

    Started by dagummit, 01-13-2010
    • Replies: 1
    • Views: 2,317
    02-14-2010 Go to last post
  4. Hacker Attempts

    I've been fighting with a hacker in my Web Server for the past couple days. I thought I had Public Key auth setup for SSH, but it apparently wasn't...

    Started by alapierre, 12-30-2009
    • Replies: 7
    • Views: 1,739
    02-14-2010 Go to last post
  5. Auditing - Logging all commands and arguments

    I want to increase my security and auditing on some systems by adding full logging of every command and all arguments to every command that is typed...

    Started by humbletech99, 12-04-2007
    • Replies: 4
    • Views: 16,758
    02-10-2010 Go to last post
  6. permissions on Samba share mount point in RHEL 5

    Dear friends, I am straight away coming to the point I have a samba server and I have created a public share (with full permissions for every user...

    Started by technocp, 02-03-2010
    • Replies: 0
    • Views: 4,630
    02-03-2010 Go to last post
  7. Been hacked - need help...

    I've been running this box for about 3 years now with no issues....until about a month ago. I am running CentOS on a VM hosted by a web company. I...

    Started by Angersum, 02-01-2010
    2 Pages
    1 2
    • Replies: 14
    • Views: 3,301
    02-02-2010 Go to last post
  8. updated timestamp

    fedora core - 2. 1. I started IMAP server ( dovecot ), apache , sendmail & used the webmail application ( squirrelmail ) to use mail services....

    Started by jkmartha, 05-10-2005
    • Replies: 1
    • Views: 5,057
    02-01-2010 Go to last post
  9. do i have to use an antivirus

    Hello...! everyone I'm a new user of Linux and i blame myself for not trying it before. This is a great OS However i'm a bit warried about...

    Started by joni, 01-29-2010
    • Replies: 8
    • Views: 2,195
    01-31-2010 Go to last post
  10. A Keylogger

    Hi everyone, Im a Linux user, I hope someone can help me and give me some anwsers. If theres is a keylogger running in my debian lenny how can i...

    Started by purplegirl, 01-30-2010
    • Replies: 4
    • Views: 2,179
    01-30-2010 Go to last post
  11. how do i set this rule?

    hi guys i have one question suppose the task is : setup a squid proxy server but only allow access for clients in the domain and...

    Started by elliotwilliams77, 01-26-2010
    • Replies: 5
    • Views: 1,112
    01-28-2010 Go to last post
  12. rootkit infected

    helo 1. my linux box is infected with suckit rootkit how to remove it 2. and how to replace with uninfected binaries (procps, init-scripts, may...

    Started by kamtono, 04-19-2005
    2 Pages
    1 2
    • Replies: 17
    • Views: 25,804
    01-19-2010 Go to last post
  13. Question Linux Server Enteroprice 10.3

    I need to accomplish an assigment, and the commands I have are for SLES 9.0. The OS I am using is SLES 10.3. This command is not working for me: cp...

    Started by Antarqui, 01-18-2010
    • Replies: 1
    • Views: 857
    01-18-2010 Go to last post
  14. what is this hacker upto?

    Upon checking my logs of my server, I noticed a hacker ftp into my main account and edited all index.html and index.php to include the following ...

    Started by amedj, 01-17-2010
    • Replies: 2
    • Views: 1,756
    01-18-2010 Go to last post
  15. Is this bad security info?

    I recently read that running: /usr/bin/lsattr `echo $PATH | tr ':' ' '` | grep i-- would identify any files made immutable by a cracker because no...

    Started by clickit, 01-15-2010
    • Replies: 1
    • Views: 1,564
    01-15-2010 Go to last post
  16. syslog

    Hello, I'm trying to parse a syslog log and extract useful informations regarding security issues that have been logged. What information is it...

    Started by Elishac, 12-11-2009
    • Replies: 7
    • Views: 1,168
    01-14-2010 Go to last post
  17. Number of Linux virusses

    I have a question. How many virusses has written for Linux? Do You have any stats? Maybe any links? It is very important for me.

    Started by Alighieri, 01-11-2010
    2 Pages
    1 2
    • Replies: 10
    • Views: 5,108
    01-12-2010 Go to last post
  18. Tripwire capability

    Does anyone know whether Tripwire can guard against rootkits and scripts are saved as hidden files that make their way to the file system via remote...

    Started by victor43, 01-11-2010
    • Replies: 0
    • Views: 3,621
    01-11-2010 Go to last post
  19. Exclamation Linux Audit

    Hi All, I configured audit logs in my server and its working fine with its default funcation. But the logs generated are huge, so i wan to know...

    Started by ash_ok555, 01-08-2010
    • Replies: 3
    • Views: 4,141
    01-10-2010 Go to last post
  20. How to block a particular website to the clients?

    Hi, I have a proxy server configured on RHEL 5. My boss wants me to block Orkut and other social sites to few client machines. I am not sure how to...

    Started by lilchakki, 01-05-2010
    • Replies: 4
    • Views: 4,087
    01-08-2010 Go to last post

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