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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: 49,383
    01-11-2010 Go to last post
  1. How one gets infected with a rootkit, virus, trojan, etc, on linux?

    Can something like that happen just by browsing, like bypassing those warnings by google? Most of windows viruses I know (well, I don't even know...

    Started by the dsc, 08-02-2010
    • Replies: 4
    • Views: 3,837
    08-09-2010 Go to last post
  2. Linux Firewall (IPTABLES)

    HI! I have worked a lot at iptables and deployed it in my office working environment. I have no issue in deployment and configuration. Anybody...

    Started by fnregister, 08-03-2010
    • Replies: 1
    • Views: 662
    08-05-2010 Go to last post
  3. User account locking not working in Pam

    Hi I am facing another problem while configuring the system-auth file for setting user account locking after 3 fail attempts. But this...

    Started by cj_cheema, 07-25-2010
    • Replies: 7
    • Views: 10,132
    08-03-2010 Go to last post
  4. How do you do bock spoofing attack, invalid packets and other?

    How do you do bock spoofing attack, invalid packets and other? Please, post you code for iptables.

    Started by wertum, 07-27-2010
    • Replies: 1
    • Views: 725
    08-03-2010 Go to last post
  5. Server infected with scanssh, pscan2, ./sshf. Urgent Help Required

    HI Gurus, I am facing a security issue on my server. I can see many process like pscan2, scanssh and ./sshf processing on 'top'. The owner of...

    Started by Xaeem, 07-31-2010
    • Replies: 2
    • Views: 4,870
    08-02-2010 Go to last post
  6. Running services as specific users

    Hi guys, I'm not new to Linux but no expert by any means and currently I'm running Gentoo. Something I've always wondered about is how you go about...

    Started by FunkyMcBain, 08-01-2010
    • Replies: 4
    • Views: 1,018
    08-02-2010 Go to last post
  7. Linux and malware

    Hi! I am completly new to Linux, and this is my first thread on this forum. We have a network at my job that needs to be completly offline due...

    Started by hovmedia, 07-30-2010
    • Replies: 1
    • Views: 623
    07-30-2010 Go to last post
  8. Write Permisson Denied

    I created a user "CATUSER" and using the usermod command I had set the secondary group of the "CATUSER" to "beagrp". usermod -a -G beagrp CATUSER...

    Started by balamuruganmurthy, 07-28-2010
    • Replies: 2
    • Views: 822
    07-29-2010 Go to last post
  9. Bastille on Debian 5.0

    Hallo I habe Problem to applay my instruction on my Debian lenny 5.0. here ist the error-log ich habe versuche Bastille zu installalieren es...

    Started by Angela1, 07-27-2010
    • Replies: 2
    • Views: 1,257
    07-28-2010 Go to last post
  10. create ssl cert with owner info

    if i go to, for example, https firefox will tell me that the owner is unknown, whereas if i go to https their ssl cert provides...

    Started by spezticle, 06-29-2010
    • Replies: 1
    • Views: 1,202
    07-26-2010 Go to last post
  11. [SOLVED] CBL Keeps Listing

    Hi all, I am using the latest version of Plesk with my CentOS server. For some reason, CBL keeps listing my server's IP address. I made the open...

    Started by telmessos, 07-22-2010
    • Replies: 1
    • Views: 1,552
    07-26-2010 Go to last post
  12. Can't Run BitDefender Antivirus on Ubuntu 10.04?

    I downloaded BitDefender off their website, and tried running the program. After download, a window pop up that said "An error occured while loading...

    Started by Alvina, 07-22-2010
    • Replies: 3
    • Views: 3,318
    07-23-2010 Go to last post
  13. syslogger query

    I'm using a security audit tool which gives the following requirement for mail logging: mail.* /var/log/maillog mail.none /var/log/maillog...

    Started by matonb, 07-20-2010
    • Replies: 0
    • Views: 385
    07-20-2010 Go to last post
  14. Encrypt my data on a multi-boot computer

    Hi, To gain some privacy (and stuff like this), I would like to encrypt my data. I'm not looking for the absolute best secure method in the world...

    Started by martvefun, 07-19-2010
    • Replies: 0
    • Views: 1,001
    07-19-2010 Go to last post
  15. Question about files in /tmp folder

    In my /tmp folder, i have two items which are locked: orbit-gdm pulse-PKdhtXMmr18n Is this normal/safe? If not, is it safe to delete these?

    Started by Ocifer, 07-18-2010
    • Replies: 1
    • Views: 6,351
    07-18-2010 Go to last post
  16. Paranoia

    Ok, so one day My machine went crazy. The mail server stopped working, and I had to completely re-install it and it took forever. So I was...

    Started by xilus, 07-07-2010
    • Replies: 4
    • Views: 797
    07-17-2010 Go to last post
  17. Question problem with script

    Hi every one I have started to deal with Linux from nearly time I have network can prevent any one to log in if he/she don't register the MAC...

    Started by blaly, 07-11-2010
    • Replies: 3
    • Views: 630
    07-15-2010 Go to last post
  18. Question are linux have virus?

    hi all are os linux can be infect with virus or Trojan? please any information help me regard vip

    Started by vipser, 07-10-2010
    • Replies: 4
    • Views: 811
    07-13-2010 Go to last post
  19. Openssh: renaming keys

    am using openSSH on Debian Lenny. For years now I've used ssh key create by using ssh-keygen -t rsa It offers the default name of id_rsa...

    Started by bill-linux, 06-25-2010
    • Replies: 2
    • Views: 2,451
    07-08-2010 Go to last post
  20. auditctl - man page confusion

    Am I having a senior moment or is this just confusing: The auditctl man page (RHEL 4) states: success If the exit value is >= 0 this is...

    Started by matonb, 06-16-2010
    • Replies: 2
    • Views: 1,915
    07-06-2010 Go to last post

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