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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: 69,934
    01-11-2010 Go to last post
  1. securing ssh using iptables?

    I was recently reading an article on better securing ssh. It recommended taking a look at /var/log/auth.log to see if there had been any suspicious...

    Started by jamtat, 06-17-2015
    • Replies: 1
    • Views: 2,444
    06-17-2015 Go to last post
  2. Capture sudo replay for root user

    I have setup sudo and using sudoreplay.However some of my DBA's have root access so is there a way that I can use sudo replay to capture their...

    Started by tshepang, 06-02-2015
    • Replies: 1
    • Views: 3,686
    06-02-2015 Go to last post
  3. Grub menu/MBR modifications

    I have an offline computer that's suddenly had it's mbr changed. I had a 10 s timeout, who suddenly has disappeared. By removing one older kernel...

    Started by mrbigfoot, 05-31-2015
    • Replies: 2
    • Views: 2,143
    05-31-2015 Go to last post
  4. Question What, In Your Opinion, Is The Most Secure, Lightweight Forum Software?

    Good day everyone, I am in the midst of setting up a very small community on a few servers. I have browsed the web looking at the different forum...

    Started by Xorg, 05-11-2015
    • Replies: 2
    • Views: 3,341
    05-13-2015 Go to last post
  5. Using keepass2 for mono, cannot paste, ctl-v in the password?

    Hello, I'm using keepass2 for Linux and it's supposed to run under mono. Although I have no experience with mono, it seems to run the same either...

    Started by jkwilborn, 04-18-2015
    • Replies: 2
    • Views: 1,982
    04-19-2015 Go to last post
  6. ntpd attack,why?

    Hello, i got this message ( that one of VPS participated in NTP attack. Im providing an VPS to one person, this is running...

    Started by postcd, 04-09-2015
    • Replies: 1
    • Views: 2,650
    04-09-2015 Go to last post
  7. how to secure the hdd: can i make the notebook safe with LUKS ?

    hello and good evening dear linux-experts and users i have bought a new notebook and just did a installation. I installed a opensuse-system - the...

    Started by sayhello, 02-26-2015
    • Replies: 1
    • Views: 3,496
    04-02-2015 Go to last post
  8. Root user password resets after reboot

    Hi I have a seagate central nas. The root user has no password, so I set one and it works. But when I reboot the system it dissappears, no...

    Started by Pgaroth, 10-01-2013
    • Replies: 3
    • Views: 4,681
    03-24-2015 Go to last post
  9. Linux user with SSH read-only access to one folder?

    Hello, i would like to have an "backup" user who will have read-only SSH access to the folder /backup which is used to store server data...

    Started by postcd, 03-19-2015
    • Replies: 1
    • Views: 1,555
    03-20-2015 Go to last post
  10. Lightbulb Trying to encrypt with ecryptfs a home folder on a Ubuntu live usb key

    0 down vote favorite I am trying to use ecryptfs on a Xubuntu 14.10 live usb key with casper-rw persistency to encrypt the home folder of the...

    Started by patlefox, 02-13-2015
    • Replies: 1
    • Views: 1,472
    02-16-2015 Go to last post
  11. Conntrack table records and high PPS

    Hello, an software reported to me that on my VPS is high packets per second. and it given me some lines out of conntrack table: ipv4 2 tcp 6 92...

    Started by postcd, 02-01-2015
    • Replies: 1
    • Views: 2,116
    02-02-2015 Go to last post
  12. su or sudo password

    I'm on OS X but I thought it wouldn't matter since my problem seems like it would be the same for Linux. When I type su or sudo in the Terminal, the...

    Started by splash_wave, 01-28-2015
    • Replies: 6
    • Views: 2,129
    01-30-2015 Go to last post
  13. A few security issues to solve on my school... or try to..

    Hello, This is going to be a pretty long post so I'm going to try to explain everything very clearly... The problem: My school which has...

    Started by Joaogl, 01-09-2015
    • Replies: 2
    • Views: 1,833
    01-30-2015 Go to last post
  14. [SOLVED] Iptables port-forwarding

    Hello there, Im having some difficulties with configuring my main-servers ( iptables. I want him to forward port 21 (FTP) to another...

    Started by ginojo, 01-10-2015
    • Replies: 1
    • Views: 1,979
    01-10-2015 Go to last post
  15. Tails help?

    Hello guys i am wanting to find out if having tails installed on a usb flash drive, is it traceable? Meaning i am at work and they have an open wifi...

    Started by armyranger516862006, 12-25-2014
    • Replies: 4
    • Views: 1,967
    01-06-2015 Go to last post
  16. Know when you are being tracked and spied on

    In Hamburg, Germany there is currently the 31st Chaos Communication Congress (31C3) Two of the talks explained the (in)security of the ss7...

    Started by Irithori, 12-28-2014
    • Replies: 1
    • Views: 1,741
    01-06-2015 Go to last post
  17. Hardware device preventing DDoS?

    I recently came across a company with a hardware box they claim prevents DDoS's. Now my question is, no. 1 will it? HOW? And if so, why can't...

    Started by resetreset, 12-04-2014
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,690
    12-22-2014 Go to last post
  18. AES 256 encryption with 7z

    Hi, when I create archive in Ubuntu, I choose with right mouse button in context menu "Compress", leave default ".7z", provide password and leave...

    Started by johnyjj2, 12-21-2014
    • Replies: 0
    • Views: 2,996
    12-21-2014 Go to last post
  19. lost+found directory hiding malware. How to delete?

    Because of being hacked, I had switched to live linux DVDs. My personal files are stored on FAT32Crackers have infected all of my personal files on...

    Started by BadBIOSVictim, 07-07-2014
    2 Pages
    1 2
    • Replies: 16
    • Views: 4,304
    12-20-2014 Go to last post
  20. How to set up non-expiring tickets for Kerberos

    Hello Forum, I need to set up non-expiring Kerberos security tickets. Can you please recommend how to do that.

    Started by ggolub, 12-14-2014
    • Replies: 0
    • Views: 754
    12-14-2014 Go to last post

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