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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: 56,106
    01-11-2010 Go to last post
  1. cryptsetup disk encryption problem

    Hi, I have a problem with my cryptsetup disk encryption. So I set up, installed it and everything. It works fine. The only thing is that I...

    Started by linuxext4, 07-29-2011
    • Replies: 6
    • Views: 1,674
    07-31-2011 Go to last post
  2. how to test apf firewall on network

    I have installed apf firewall in my system.can anyone tell me how test its features so that i can say my system is fully protected.i have tested...

    Started by deepmala8, 06-24-2011
    • Replies: 1
    • Views: 1,361
    07-20-2011 Go to last post
  3. John The Ripper

    Hi Community, I understand that John the Ripper is compatible with wordlists and that you can use rules to refine those lists, but is there a way...

    Started by chumponimys, 07-11-2011
    • Replies: 3
    • Views: 1,880
    07-20-2011 Go to last post
  4. Smile ssh connections

    I am connecting through a ssh/sftp connection to a server from a win7 PC through bitwise tunneller software. I would like to know how safe is...

    Started by schamarthi1, 07-08-2011
    • Replies: 5
    • Views: 1,733
    07-13-2011 Go to last post
  5. Email Anti-virus

    Hi, I was trying to secure Email box integrating Postfix with clamsmtp to filter virus as shown www dot debian-administration dot org...

    Started by gopi219, 07-12-2011
    • Replies: 0
    • Views: 921
    07-12-2011 Go to last post
  6. to firewall or not to firewall?

    Hello, We had a small conflict today at work whether or not there is any major advantage to setup a firewall to a relatively small web server box...

    Started by zflash78, 07-05-2011
    • Replies: 2
    • Views: 974
    07-06-2011 Go to last post
  7. Exclamation Has my hosting provider been compromised?

    Hi, My virtual server hosted by a large and well known hosting company is behaving very oddly, even after re-imaging. Symptom: When logged...

    Started by variant, 06-29-2011
    • Replies: 1
    • Views: 1,073
    06-29-2011 Go to last post
  8. transfer pgp public and private keys to new server running gpg

    Hiya all, For all my googling, I am unable to work through the haze that is gpg. I understand the principles, but cannot translate this to a...

    Started by Hotchips, 06-22-2011
    • Replies: 0
    • Views: 1,736
    06-22-2011 Go to last post
  9. How to enable passphrase for access via ssh

    Hello, How can I enable passphrase along with the password for login via ssh ? In that whenever I login from server A to server B via ssh, it...

    Started by me_spearhead, 04-21-2011
    • Replies: 3
    • Views: 1,576
    06-20-2011 Go to last post
  10. Grub Bootloader authentication

    Hi I am a newbie. I am trying to get MBR shadow working. I have 2 physical memories in my system. i.e. I have the MBR/grub with password enabled...

    Started by odomae, 06-15-2011
    • Replies: 1
    • Views: 1,101
    06-15-2011 Go to last post
  11. Lightbulb Modify UNLINK system call so that it is a WIPE and then UNLINK?

    Hello all! Closed source applications used on our server use the unlink system call to delete files. My goal is to make it so unlink system...

    Started by s1sw, 04-28-2011
    • Replies: 4
    • Views: 1,836
    06-13-2011 Go to last post
  12. Giving console permissions

    Hi, I wanted to know if there is a way to give console permissions? What I need this for is: I have a script that I start as root that would...

    Started by jreptak, 06-10-2011
    • Replies: 4
    • Views: 951
    06-10-2011 Go to last post
  13. Question Newbie question about user bin,daemon, etc

    Hi everyone! I have a newbie doubt, checking the /etc/passwd file from my server (SuSE 10 SP1), there are various system users like bin, daaemon,...

    Started by keita_mog, 06-09-2011
    • Replies: 1
    • Views: 1,261
    06-09-2011 Go to last post
  14. shorewwall forwad public vip to private vip on same box

    hi, I am having problems forwarding from public vip to private vip and back configuration files interfaces ...

    Started by shorif2000, 06-08-2011
    • Replies: 0
    • Views: 1,179
    06-08-2011 Go to last post
  15. Ssh and SFTP access control

    Dear All, I have allowed remote user to log into the server via these two (SSH and SFTP) method. The problem now I have read on the net...

    Started by newbie14, 05-31-2011
    2 Pages
    1 2
    • Replies: 12
    • Views: 15,441
    06-06-2011 Go to last post
  16. Post Configuring firewall pci dss

    Following are security policies for PCI DSS - FTP services are not allowed from External zone to PCI zone. TFTP services are not allowed from...

    Started by gattaca, 06-04-2011
    • Replies: 0
    • Views: 1,924
    06-04-2011 Go to last post
  17. SOB...concerned I've been breached

    Hi All, I'm concerned my security has been breached but I don't know how to check it. I noticed at least yesterday (could have been before) that...

    Started by jmadero, 04-12-2011
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 2,528
    06-04-2011 Go to last post
  18. Port monitoring or real time netstat

    The Setup: I have a CentOS server I just inherited and we don't have adequate documentation for how it was configured. The problem: My security...

    Started by lostowl, 04-27-2011
    • Replies: 1
    • Views: 3,116
    06-02-2011 Go to last post
  19. fail2ban and vsftp

    Hi, I've setup fail2ban to try and block some ftp login failures. I've changed the fail slightly to: enabled = true filter = vsftpd

    Started by adrianmarsh, 03-30-2011
    • Replies: 1
    • Views: 4,217
    05-25-2011 Go to last post
  20. DDoS Flood IPtables Rules/Script

    I've looked through this site as well as many others. I know little to nothing about Linux and I put Ubuntu on my server computer because we kept...

    Started by Adeya, 05-18-2011
    • Replies: 1
    • Views: 2,703
    05-18-2011 Go to last post

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