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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: 52,827
    01-11-2010 Go to last post
  1. 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: 2,647
    04-18-2010 Go to last post
  2. 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: 1,280
    04-15-2010 Go to last post
  3. "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: 2,488
    04-15-2010 Go to last post
  4. 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: 2,207
    04-13-2010 Go to last post
  5. 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: 1,062
    04-12-2010 Go to last post
  6. 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: 928
    04-12-2010 Go to last post
  7. 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: 654
    04-06-2010 Go to last post
  8. 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: 877
    04-06-2010 Go to last post
  9. 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: 2,642
    04-03-2010 Go to last post
  10. 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: 687
    04-02-2010 Go to last post
  11. 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: 850
    03-29-2010 Go to last post
  12. 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: 2,128
    03-29-2010 Go to last post
  13. 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: 1,606
    03-22-2010 Go to last post
  14. 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: 988
    03-22-2010 Go to last post
  15. 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: 9,773
    03-22-2010 Go to last post
  16. 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: 1,094
    03-18-2010 Go to last post
  17. 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: 1,084
    03-18-2010 Go to last post
  18. 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: 1,268
    03-16-2010 Go to last post
  19. run bash commands as root.

    Hi. I need to launch a bash file in Linux from an unprivileged user session, file that will run bash commands as root. But I do not want to...

    Started by julia2009, 03-03-2010
    • Replies: 3
    • Views: 4,607
    03-15-2010 Go to last post
  20. Angry How to crack phishing webstte?

    Recently I'm receiving lot of spams about Income tax refund. I know these are phishing site :rolleyes: But I want to do something for these sites....

    Started by Lakshmipathi, 03-10-2010
    • Replies: 3
    • Views: 1,646
    03-10-2010 Go to last post

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