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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: 71,258
    01-11-2010 Go to last post
  1. Userspace SPI without root privileges

    Hi all, My first post around here so please excuse me for all my wrongdoings against the forum etiquette in advance. I would have to create...

    Started by mjsv, 11-01-2012
    • Replies: 0
    • Views: 715
    11-01-2012 Go to last post
  2. Lightbulb [SOLVED] ICMP Port Numbers

    Hi, In my Ubuntu desktop I implemented Gufw 11.10.2 Firewall GUI. I have secured my firewall by DENYING all incoming and outgoing traffic and...

    Started by amithad, 10-11-2012
    2 Pages
    1 2
    • Replies: 10
    • Views: 5,255
    10-17-2012 Go to last post
  3. Lightbulb Network Outburst Monitoring

    Hi, Recently I was in troubled waters hence my network is under some kind of a flooding attack where the time value of ping went over 1024 for...

    Started by amithad, 10-16-2012
    • Replies: 0
    • Views: 640
    10-16-2012 Go to last post
  4. WHM server hacked, lost root access

    I have a huge problem. In a nut shell, 2 days ago I noted a strange process going on with httpd, something I never saw before. That then led to me...

    Started by linkandzelda, 10-10-2012
    • Replies: 5
    • Views: 1,788
    10-11-2012 Go to last post
  5. [SOLVED] Pam - otpw -ssh

    I don't know if I'm at the right place with my question, it's kind of interdisciplinary. To explain my problem - finally I have to provide access...

    Started by nimdardo, 08-16-2012
    • Replies: 7
    • Views: 8,304
    10-10-2012 Go to last post
  6. using a hashed password file

    I'm looking for an encryption utility/software that will help me do the following: I have a script that runs periodically that will look at a file...

    Started by dpm7896, 10-08-2012
    • Replies: 2
    • Views: 757
    10-08-2012 Go to last post
  7. Question Hacked CentOS 5 server - possible rootkit installed?

    I am running CentOS 5.3 and here is the result of "chkrootkit": Possible t0rn v8 \(or variation\) rootkit installed Warning: Possible Showtee...

    Started by dand, 10-04-2012
    • Replies: 3
    • Views: 3,237
    10-05-2012 Go to last post
  8. Password Protected RSA keys for ssh

    Hey, I was just wondering if people opted to password protect their RSA keys, or if they just left them raw. For me, I like to hope that I maintain...

    Started by hobuscorpus, 10-03-2012
    • Replies: 2
    • Views: 1,143
    10-03-2012 Go to last post
  9. Exclamation My CSF is blocking me from webmin

    My CSF keeps blocking me from going to webmin and sometimes to me site and even SSH. I added my ip to whitelist but i have a dynamic ip so this is...

    Started by Website, 10-01-2012
    • Replies: 1
    • Views: 1,674
    10-02-2012 Go to last post
  10. security issue: same uuid used twice

    possible security issue in linux kernel: Imagine you have an public linux computer (e.g. internet cafe) and you don't want someone (that is...

    Started by aleks-berlin, 09-26-2012
    • Replies: 1
    • Views: 1,045
    09-30-2012 Go to last post
  11. iptables problem with FORWARD not doing anything

    I have started using iptable and have working examples with input and output and masquerading. However I do not understand how to get FORWARD to work...

    Started by rainbow3, 09-18-2012
    • Replies: 0
    • Views: 676
    09-18-2012 Go to last post
  12. Encrypted Video Requirement

    Hello all, First time poster so if I've inadvertantly broken any forum rules I apologise in advance. Basically I'm a newbie to linux, have...

    Started by mikec1987, 09-16-2012
    • Replies: 1
    • Views: 1,377
    09-17-2012 Go to last post
  13. [SOLVED] How to disable certain commands for a user..??

    Hi All, Is there any way to disable a certain commands for a particular user..?? We are using Solaris 10 8/11. Thanks for your help. ...

    Started by shettyjayapal, 09-10-2012
    • Replies: 1
    • Views: 758
    09-15-2012 Go to last post
  14. Looking at a linux firewall?

    I've been looking at various linux based firewall's that will help me in a few area's; so far the ones I've came across is. Untangle IPCop...

    Started by SeanC, 09-12-2012
    • Replies: 1
    • Views: 1,068
    09-14-2012 Go to last post
  15. Exclamation How to find out firewall working or not?

    I am newbie to linux and last night i installed APF firewall in my server. Actually i dont know whether it is working or not. how to find out...

    Started by olddocks, 11-26-2007
    • Replies: 4
    • Views: 9,789
    08-31-2012 Go to last post
  16. hacked by Opyum Team

    Can somebody please tell me what to do if you have been hacked by this Opyum Team? Now they have full root privileges They have a cron job called f...

    Started by Website, 08-05-2012
    2 Pages
    1 2
    • Replies: 13
    • Views: 7,307
    08-30-2012 Go to last post
  17. PSAD is Giving a Firewall Setup Warning. But UFW Logging is enabled.

    I have setup PSAD on my server. It asks me to add the following iptables rules: iptables -A INPUT -j LOG iptables -A FORWARD -j LOG ip6tables -A...

    Started by THpubs, 08-26-2012
    2 Pages
    1 2
    • Replies: 11
    • Views: 8,914
    08-28-2012 Go to last post
  18. How to block flooding?

    During last 4 days, my machine's is under flooding. Today i install ntop. I make SS (in attachments) Right now i have 8 pages of that. Few hours ago...

    Started by AngelDeaD, 08-13-2012
    2 Pages
    1 2
    • Replies: 10
    • Views: 2,115
    08-27-2012 Go to last post
  19. IPTables configuration possibly causing trouble

    Hi, For one of my customers I'm running a web application on a RHEL 5 server. To protect against any intruders, I'm running iptables on this...

    Started by Lister432, 08-23-2012
    • Replies: 6
    • Views: 1,648
    08-26-2012 Go to last post
  20. Anti-virus scanning for T-bird

    Is there any way to get an addon built for T-bird that will scan emails and attachments and either get them Marked or Tagged if they're infected? I'm...

    Started by blaineclrk, 08-19-2012
    • Replies: 7
    • Views: 1,135
    08-23-2012 Go to last post

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