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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: 68,949
    01-11-2010 Go to last post
  1. Will openssl 1.0.1c install on a CentOS 5.11 or 6.7 machine?

    I been trying to find information on this on the openssl website but couldn't. I'd like to know if anyone has tried this yet. Currently I have...

    Started by edomingox, 1 Week Ago
    2 Pages
    1 2
    • Replies: 17
    • Views: 457
    1 Week Ago Go to last post
  2. Having problems with openssl...

    I have a linux system using CentOS 6.7. I just started working with openssl. I ran the following command: openssl genrsa -aes256 -rand /dev/...

    Started by edomingox, 3 Weeks Ago
    • Replies: 2
    • Views: 351
    2 Weeks Ago Go to last post
  3. Unhappy how to break grub password

    Hi I forget my grub password. so that when i want to go into single user mode from the grub stage. but i can't so that i want to brak that...

    Started by harsh4harshil, 02-22-2008
    • Replies: 2
    • Views: 5,480
    10-17-2016 Go to last post
  4. How to ban myself if i load webpage more than 1 times at a time?

    Hello, im trying to achive that more than 1 simultaneous connections from one /24 subnet is rejected by netfilter But i cant manage to get...

    Started by postcd, 08-11-2016
    • Replies: 1
    • Views: 4,865
    08-13-2016 Go to last post
  5. Linux & Sonicwall (TZ300)

    I have a mixed Linux and Windows LAN behind a (Dell) Sonicwall TZ300 firewall (with LAN DHCP service). The Sonicwall forwards WAN related DNS...

    Started by stustd, 08-05-2016
    • Replies: 0
    • Views: 3,299
    08-05-2016 Go to last post
  6. PAM Question

    Hi all, In theory this makes sense, but I'd just like to check before implementing it: I'm transitioning password backends from pam_radius to...

    Started by doublez13, 07-27-2016
    • Replies: 2
    • Views: 3,598
    07-27-2016 Go to last post
  7. Linux Live Pen

    Hi I'd like to be able to create a persistent Linux live pen, then use the first session to personalize it (change keyboard layout to portuguese,...

    Started by tronisus, 07-06-2016
    • Replies: 4
    • Views: 4,004
    07-18-2016 Go to last post
  8. hidden files issue

    Hi, I've found two hidden folders on my home folder containing strange files like I can't find any information on the...

    Started by ciok, 07-07-2016
    • Replies: 5
    • Views: 3,579
    07-08-2016 Go to last post
  9. How useful would the kill ps and top commands be to a technician?

    Hi, this is my first post and I need to find out from someone who knows about Linux how useful the kill, ps and top commands would be to a technician...

    Started by A_Person, 06-28-2016
    • Replies: 3
    • Views: 3,784
    06-28-2016 Go to last post
  10. Secure my servers

    I have a small company with at least 5 workers. Well we have one server(FTP,mail,voip) and second server(PTGR, Cacti). We offer services to other...

    Started by victorzx, 06-06-2016
    • Replies: 2
    • Views: 4,453
    06-08-2016 Go to last post
  11. How to whitelist IP in the iptables while it is already there blocked?

    Hello, some application repeatedly blocking my IP in IPtables, (i dont know what is her motive and which one it is) it always add it at the...

    Started by postcd, 02-19-2016
    • Replies: 5
    • Views: 8,499
    05-19-2016 Go to last post
  12. File deployment

    Hi there I am working to develop a small embedded system running Linux. The Linux system will need some files create by me to work. Should...

    Started by djm2, 01-06-2016
    • Replies: 3
    • Views: 9,742
    05-18-2016 Go to last post
  13. Encryption - Windows and Linux

    Hello Everyone! I'm relatively new to Linux so I hope that this isn't a silly question. I'm a computer science student and I typically use...

    Started by bdorman, 04-29-2016
    • Replies: 5
    • Views: 7,982
    05-07-2016 Go to last post
  14. HEY SYSADMINS! SSL certs just became free and easy!

    Free HTTPS certs for all Let's Encrypt opens doors to world+dog

    Started by Steven_G, 12-05-2015
    • Replies: 1
    • Views: 8,031
    03-27-2016 Go to last post
  15. How can i watch what is writed in MBR of hard disk?

    How can i watch what is writed in MBR of hard disk?

    Started by pixliks, 01-19-2016
    • Replies: 2
    • Views: 7,773
    02-07-2016 Go to last post
  16. I'm not paranoid enough. I didn't even know this is possible...

    How TV ads silently ping commands to phones: Sneaky SilverPush code reverse-engineered

    Started by Steven_G, 11-20-2015
    • Replies: 6
    • Views: 8,486
    01-13-2016 Go to last post
  17. Best antivirus and Security suite?

    New-ish to Linux. I have a few questions but it's best if I dedicate each question to a single thread. I understand Linux is more secure than...

    Started by Alire, 11-06-2015
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 20,217
    01-11-2016 Go to last post
  18. Some questions about Tails

    Hi, I would like to ask some security-focused questions on Tails, the Linux privacy OS. 1. We know that Javascript and plugins are removed from...

    Started by KingNeil, 12-24-2015
    • Replies: 2
    • Views: 7,817
    01-11-2016 Go to last post
  19. Verifying bios security

    Hello, I am a programmer. I have some experiences with ethical hacking and i have become extremely paranoid as i knew what was actually...

    Started by somenerd2, 01-11-2016
    • Replies: 0
    • Views: 7,275
    01-11-2016 Go to last post
  20. Question Which version of Debian or CentOS is vulnerable for attacks?

    I want to install a vulnerable Debian server inside a virtual box for penetration testing and practice. I want to install two web applications...

    Started by skorpinok, 01-04-2016
    • Replies: 1
    • Views: 7,413
    01-06-2016 Go to last post

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