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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. Question The big "open source" question

    Hi, I'm using GNU/Linux since 2004 because it helped me having a good sleep. Ok. It is much easier to maintain than Windows was (and is still)....

    Started by BrandNewColony, 04-05-2010
    • Replies: 3
    • Views: 1,081
    04-20-2010 Go to last post
  2. Port Scanner for Linux

    i have heard that linux (redhat 8.0) has a built in port scanner, is this true ? if so, how can i access it and scan localhost to see what ports i...

    Started by danbo, 02-09-2003
    • Replies: 5
    • Views: 94,607
    04-19-2010 Go to last post
  3. Look like a virus or ddos attack not sure, please help

    Hello, I view my /var/log/maillog and see tons of lines like this: Apr 14 01:35:16 ns1 postfix/qmgr: AB33922B89D8: to=<>,...

    Started by moimel, 04-13-2010
    • Replies: 1
    • Views: 3,083
    04-18-2010 Go to last post
  4. Is GPG my best method of signing files?

    I'm working on large testing/simulation system that, amongst other responsibilities, must capture live data for later playback. We are looking at...

    Started by sollen, 04-14-2010
    • Replies: 1
    • Views: 1,446
    04-15-2010 Go to last post
  5. "Virus" problem in Kubuntu

    Hello. Some 6 months ago when I was using Windows , I ended up having on my hdd the most nasty virus I have ever heard about. This virus is like an...

    Started by Oraculum, 03-31-2010
    • Replies: 7
    • Views: 3,377
    04-15-2010 Go to last post
  6. How can we implement a CA(certificate authority) in linux(Which distribution better?)

    Hi all, Could you introduce me some references about this topic or share your experiences with me?! Any help will be highly appreciated.

    Started by jeremy28, 04-13-2010
    • Replies: 1
    • Views: 2,423
    04-13-2010 Go to last post
  7. Implementing security in small org

    Hello: I'm working with a small org that is moving their servers to linux. They have 2 developers that will cover their development dba, and...

    Started by lchalupa, 04-08-2010
    • Replies: 5
    • Views: 1,236
    04-12-2010 Go to last post
  8. Content filter for " web, email, instant messaging etc."

    Dear all, I have been assigned a task to implement a free open source content filter having feature of web, email, instant messaging etc. If any...

    Started by harry_log, 04-12-2010
    • Replies: 1
    • Views: 1,098
    04-12-2010 Go to last post
  9. Help: Weirdness with ssh/pam when trying to ssh in

    So on one of the Linux systems here (2.6 kernel if it matters), there's some weirdness regarding trying to ssh into the system. Basically, if you...

    Started by Nabana, 04-01-2010
    • Replies: 1
    • Views: 799
    04-06-2010 Go to last post
  10. The Parent Trap

    We've recenlty purchased a three computers and I was wondering how I would go about making it so the two computers for the children could be locked...

    Started by NewJerseyMom8547, 04-05-2010
    • Replies: 6
    • Views: 1,108
    04-06-2010 Go to last post
  11. pam_tally2 prevent lockout

    Hi folks, I am trying to harden a production system running rhel 5.4 My problem is with pam_tally2.I want pam_tally2 to lockout almos all users...

    Started by Theleo, 04-03-2010
    • Replies: 0
    • Views: 3,057
    04-03-2010 Go to last post
  12. Question SMTP and VNC access without radius login

    Hello, Actually after posting several posts without an answer in chillispot and openwrt forums, I am putting my problems here. Please consider it....

    Started by pratikdbl, 04-02-2010
    • Replies: 0
    • Views: 854
    04-02-2010 Go to last post
  13. Question OpenPGP - MDC Packet - SHA1

    OpenPGP Standard RFC 4880 (Not Totally a Linux Question, but as I may be using GnuPG on Linux... I will ask anyhow :) The Modification...

    Started by tomehb, 03-29-2010
    • Replies: 1
    • Views: 1,010
    03-29-2010 Go to last post
  14. Unhappy Need to call chroot under normal unprevileged user !!

    Its been two days over, after my search started . But I didn't find answer any where ?. I need to call chroot as part of normal user, but to my...

    Started by gazolinia, 03-24-2010
    • Replies: 5
    • Views: 2,453
    03-29-2010 Go to last post
  15. linux security

    how can we protect our network from DDoS attacks. can we do this through iptables or some other firewall just like vyatta etc

    Started by iftikhar, 02-23-2010
    2 Pages
    1 2
    • Replies: 12
    • Views: 2,012
    03-22-2010 Go to last post
  16. Logins got loged in plain text

    Hi all I found a file in /usr/games/ which was a log of all successful logins. User name and password got loged in plain text. Due to this plain...

    Started by mjbohn, 03-22-2010
    • Replies: 5
    • Views: 1,234
    03-22-2010 Go to last post
  17. Trying to figure out how server was rooted

    Hi all, One of my servers was rooted recently. I'm trying to figure out how, to prevent it happening again. It's an OpenVZ virtual machine,...

    Started by kerm1t, 03-17-2010
    2 Pages
    1 2
    • Replies: 12
    • Views: 11,112
    03-22-2010 Go to last post
  18. Antivirus for Server

    hi I have a Linux Server for contact server which connects just to my LAN in the company. my LAN is connected to Internet. and I have some other...

    Started by leila5552, 03-10-2010
    • Replies: 8
    • Views: 1,388
    03-18-2010 Go to last post
  19. implementing stunnel

    I am trying to implement a POC (Proof of concept) Stunnel configurations between my VM (Fedora 9) and Windows 7. The problem is that every tutorial...

    Started by DanglingChap, 03-18-2010
    • Replies: 1
    • Views: 1,258
    03-18-2010 Go to last post
  20. Fail2ban and RHEL5

    I have used fail2ban on my debian server and I really like it. But when I installed it on my RHEL5 server it did not work right. It did not change or...

    Started by jordank, 03-03-2010
    • Replies: 1
    • Views: 1,467
    03-16-2010 Go to last post

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