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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: 76,857
    01-11-2010 Go to last post
  1. Fail2ban says IP already banned, attacks still coming from same IP

    The logs on fail2ban say that this IP address was banned at 2015-12-20 22:39:43,747 /var/log/fail2ban.log 2015-12-20 22:39:43,747...

    Started by ychaouche, 12-22-2015
    • Replies: 1
    • Views: 9,483
    12-22-2015 Go to last post
  2. FirewallD block all IP beside a subnet

    Hello, I'am having issues blocking ssh 5001 to all Ip beside the network.Bellow is my config. I can still reach the from...

    Started by joshman08, 12-03-2015
    • Replies: 2
    • Views: 9,406
    12-03-2015 Go to last post
  3. IP flooding and IRQ-threads.

    Hello all, I'm trying to improve the security of my embedded system (running Linux 3.12.35). My question is : What is the best way, exepting...

    Started by Vincent., 12-02-2015
    • Replies: 0
    • Views: 7,143
    12-02-2015 Go to last post
  4. Question An error occurred updating the password file!?

    Hello everyone, I'm new to linux and i really like it... I am facing a problem with my router which has linux embedded. When i try passwd command at...

    Started by nikpacara, 11-30-2015
    • Replies: 3
    • Views: 9,309
    11-30-2015 Go to last post
  5. Warning Firefox 42 breaks security!!!

    DO NOT UPGRADE TO FF 42 IF YOU HAVE DONE *ANY* CUSTOM SEC WORK TO YOUR BROWSER!!! On system upgrade I found that 42 breaks, at a minimum:...

    Started by Steven_G, 11-24-2015
    • Replies: 5
    • Views: 7,799
    11-30-2015 Go to last post
  6. Dell borks sec yet again

    Surprise, surprise. (/sarc) Superfish 2.0: Dell ships laptops, PCs with huge internet security hole Superfish 2.0 worsens: Dell's dodgy...

    Started by Steven_G, 11-26-2015
    • Replies: 2
    • Views: 7,587
    11-26-2015 Go to last post
  7. Most secure distro to go with?

    Call me paranoid! But i im doing some research to what distro to go with. i saw that the best way to go is with tails but i need a everyday...

    Started by botus, 11-22-2015
    2 Pages
    1 2
    • Replies: 19
    • Views: 11,819
    11-25-2015 Go to last post
  8. AdBlock Edge discontinued / uBlock Origin replaces.

    uBlock Origin First impression is that it's a nice piece of work too. I really like the advanced config options.

    Started by Steven_G, 11-24-2015
    • Replies: 0
    • Views: 6,947
    11-24-2015 Go to last post
  9. The true state of medical infosec.

    Itís Way Too Easy to Hack the Hospital

    Started by Steven_G, 11-12-2015
    • Replies: 3
    • Views: 7,571
    11-16-2015 Go to last post
  10. Need help encrypting an installation of Linux

    New-ish to Linux. I have a few questions but it's best if I dedicate each question to a single thread. On Windows, I use Truecrypt. Doesn't...

    Started by Alire, 11-06-2015
    3 Pages
    1 2 3
    • Replies: 22
    • Views: 5,874
    11-14-2015 Go to last post
  11. What is nf_conntrack used for?

    Please what is /proc/net/nf_conntrack used for? It is like a log file of the internet connections? What if i remove some lines or empty it?...

    Started by postcd, 11-08-2015
    • Replies: 4
    • Views: 2,610
    11-09-2015 Go to last post
  12. CryptoLocker on Linux?

    My server was hit with CryptoLocker. Its a centos7 server running on the Rackspace public cloud (Cloud servers). If i pay the ransom will i get my...

    Started by rackerlogan, 11-04-2015
    • Replies: 5
    • Views: 3,817
    11-06-2015 Go to last post
  13. FYI sysadmins: NTP is cracked / How to CYA

    Network Time Protocol Security Notice

    Started by Steven_G, 10-23-2015
    • Replies: 1
    • Views: 2,300
    10-23-2015 Go to last post
  14. This is how the NSA ease drops on 2/3-3/4 of all encrypted connections

    Let's talk about that NSA Diffie-Hellman crack This is why all communications protocols must be built on the assumption that all traffic will be...

    Started by Steven_G, 10-20-2015
    • Replies: 1
    • Views: 965
    10-21-2015 Go to last post
  15. [SOLVED] Help from eng doing the impossible, above my skill level / pay grade

    I need to violate the SSL hierarchy in a good way. I set up a Citrix web client for the wife last night so she could RDP in to her company's...

    Started by Steven_G, 10-12-2015
    • Replies: 1
    • Views: 1,058
    10-12-2015 Go to last post
  16. Why is the smart home insecure? Because almost nobody cares

    Why is the smart home insecure? Because almost nobody cares The miserable life of the security veep. Finally, somebody tells the truth about how...

    Started by Steven_G, 10-02-2015
    • Replies: 1
    • Views: 1,241
    10-02-2015 Go to last post
  17. scan IP range for insecure https certs

    Hi I've been given a reasonably large range of company IP's and need to check the SSL certificates are valid. Also installed Kali linux hoping to...

    Started by KevinYeandel, 09-25-2015
    • Replies: 8
    • Views: 3,371
    09-30-2015 Go to last post
  18. Buffer overflow exploits

    Hi all, I'm experimenting with creating buffer overflow exploits on x86 platforms across multiple target distros. It's not meant to be malicious in...

    Started by jalfrezi, 09-21-2015
    • Replies: 6
    • Views: 2,649
    09-23-2015 Go to last post
  19. Question How to setup iWelcome with MS-JNC

    For many years I'm using MS-JNC to connect to our corporate network using RSA SecureID token. Since a few weeks ago our company decided to switch to...

    Started by blnl, 09-18-2015
    • Replies: 0
    • Views: 2,082
    09-18-2015 Go to last post
  20. Exclamation I need a WAF

    Dear Guys, I am looking For a Distro or Something , That can work as a WAF (Web application Firewall), I need it to be able to make reports ,ETC,...

    Started by deathknight, 09-11-2015
    • Replies: 1
    • Views: 2,771
    09-15-2015 Go to last post

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