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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: 69,982
    01-11-2010 Go to last post
  1. Securing down RHEL

    Hello, I am looking in opinions on securing my RHEL linux box. I know a very good amount of hacking/security techniques from my hacking days, but I...

    Started by absal0m, 03-08-2013
    • Replies: 6
    • Views: 1,151
    03-12-2013 Go to last post
  2. Passwords for everything

    Linux already requires that I enter a password if I want to install something. I love this security feature, but I would like to see it taken a step...

    Started by carlos-ramos, 03-09-2013
    • Replies: 1
    • Views: 567
    03-09-2013 Go to last post
  3. How does my rpm -Va look?

    .......T. c /etc/rhsm/rhsm.conf S.5....T. c /etc/rsyslog.conf .M....G.. /var/log/gdm .M....... /var/run/gdm missing ...

    Started by absal0m, 03-08-2013
    • Replies: 3
    • Views: 1,333
    03-09-2013 Go to last post
  4. Trying to recover lost root password -- cannot mount /dev/sda1

    Hello: Somehow, the root account got corrupted to the point where any type of trying to log in with it doesn't work. So, I'm using a live CD to...

    Started by mgoblue0970, 03-07-2013
    • Replies: 8
    • Views: 1,220
    03-08-2013 Go to last post
  5. Simple firewall in CentOs

    Hello Everybody! I need help to setup a simple firewall for my webserver. I have install httpd on my server make a index.html and so on. There...

    Started by Twiixx, 03-01-2013
    • Replies: 1
    • Views: 735
    03-03-2013 Go to last post
  6. processes running

    Hello, on Linux Mint there are these processes accessing the HD every few second, is it normal ? what are they for? jbd2/sda6-8 rsyslogd -c5...

    Started by umbloaded, 02-22-2013
    • Replies: 1
    • Views: 683
    02-23-2013 Go to last post
  7. Lightbulb Setting Up an Encrypted Email Server - How?

    Could anyone let me know how I could set up an encrypted email hosting/server like or Can Postfix be implemented with...

    Started by Alien_on_the_run, 02-08-2013
    • Replies: 7
    • Views: 3,976
    02-12-2013 Go to last post
  8. Debian email server setup - scenario

    I am a student involved in an network/computer security organization on campus. We are having an academic cyber security competition where a red team...

    Started by conflict, 02-08-2013
    • Replies: 2
    • Views: 866
    02-10-2013 Go to last post
  9. iptables trafic redirection

    i have machine threee machines with tomcate routerwhen Machine -1 Client access to it farwards request to another ip

    Started by asimo, 02-04-2013
    • Replies: 6
    • Views: 879
    02-07-2013 Go to last post
  10. Suggestions for setting up according to my own needs

    I've decided to improve the security of my system by setting up a firewall configuration. So I've started reading tutorial/documentation on the...

    Started by zero-giulio, 01-31-2013
    • Replies: 3
    • Views: 718
    02-01-2013 Go to last post
  11. [SOLVED] How to enable password after hibernation in Fedora18/MATE desktop

    Odd problem after installing MATE desktop on laptop running F18. If I hibernate the computer, it opens directly on booting. No password prompt. I...

    Started by madcyclist, 01-29-2013
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,595
    01-31-2013 Go to last post
  12. Probable remote UPNP vulnerability's reported, router listed: what to

    Rapid7 reports a research finding that many many routers are prone to remote (i.e. from the internet) attacks. There are roughly two classes of...

    Started by Rexilion, 01-30-2013
    • Replies: 0
    • Views: 878
    01-30-2013 Go to last post
  13. Absolute iptables beginners question

    I've been reading this tutorial and one thing confuses me slightly. # iptables -P INPUT ACCEPT # iptables -F The first command sets the...

    Started by elija, 01-24-2013
    • Replies: 5
    • Views: 780
    01-24-2013 Go to last post
  14. Snort UpnP Alert on Ubuntu

    I am using Ubuntu 11.04 and have just started using Snort!. (I installed the latest version of Snort! a couple of months ago.) When I run the...

    Started by OtagoHarbour, 01-22-2013
    • Replies: 3
    • Views: 2,550
    01-23-2013 Go to last post
  15. Access to private web site without login/password - How to implement?

    I run a totally private website. Any visitor immediately gets login/password prompt, which is implemented at the webserver level (nginx). There's no...

    Started by latgarf, 01-18-2013
    • Replies: 4
    • Views: 4,264
    01-21-2013 Go to last post
  16. iptables; match and protocol question

    Below, what is the difference between using -m to specify a tcp match as well as -p to specify tcp protocol instead of just using -p to specify the...

    Started by quovadisnp, 12-21-2012
    • Replies: 4
    • Views: 928
    01-18-2013 Go to last post
  17. md5 checksum validation inconsistent

    Hi, I downloaded a Debian (Wheezy) installer iso image and burned it to a CD. After burning the CD I mounted it and ran the md5sum utility to verify...

    Started by OverBoard, 01-17-2013
    • Replies: 2
    • Views: 1,181
    01-18-2013 Go to last post
  18. selinux: domains and types

    I've been reading up on selinux and there is one thing I have thus far been unable to find out. I suspect I am not searching for the correct things....

    Started by elija, 01-15-2013
    • Replies: 2
    • Views: 769
    01-16-2013 Go to last post
  19. [SOLVED] iptables -- ip address range switch not working.

    I have the following in my iptables script: /sbin/iptables -A INPUT -p udp -m udp -s --dport 10000:20000 -j ACCEPT when I run it...

    Started by ajnabi, 01-07-2013
    • Replies: 1
    • Views: 2,690
    01-07-2013 Go to last post
  20. Winbind with Kerberos Woes

    I hope this is the right forum for this issue, but please move it if not. I've been given the task of integrating some Red Hat Enterprise...

    Started by YTee, 12-18-2012
    • Replies: 3
    • Views: 1,961
    01-03-2013 Go to last post

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