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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: 52,089
    01-11-2010 Go to last post
  1. Where are sshd logs kept?

    Hi Guys, I've just started up my own ssh server (you can read about the whole sorry affair in this thread :rolleyes: ), and I'm feeling a little...

    Started by smolloy, 11-06-2006
    • Replies: 6
    • Views: 200,519
    05-22-2013 Go to last post
  2. RSA versus DSA

    I was just having a play with SSH and I came across the option to generate RSA or DSA keys. What is the difference between these two options? Also,...

    Started by Allblack, 08-24-2003
    2 Pages
    1 2
    • Replies: 11
    • Views: 162,641
    05-29-2006 Go to last post
  3. what's the best firewall distro?

    Hi all, I'm planing to install a pc (Pentium2) special for firewall on my small internet sharing network. What is the best (good) one and easy to...

    Started by a2xm, 03-10-2005
    2 Pages
    1 2
    • Replies: 19
    • Views: 106,117
    05-30-2007 Go to last post
  4. OpenSSH user/host authentication: RSA versus DSA which provides stronger security?

    I'd like to solicit opinions on this topic. I've been reading much material on the topic and cannot seem to find a definitive/satisfying answer;...

    Started by davebardsley, 10-28-2005
    • Replies: 2
    • Views: 104,443
    08-15-2007 Go to last post
  5. Port Scanner for Linux

    i have heard that linux (redhat 8.0) has a built in port scanner, is this true ? if so, how can i access it and scan localhost to see what ports i...

    Started by danbo, 02-09-2003
    • Replies: 5
    • Views: 93,401
    04-19-2010 Go to last post
  6. Ext3 filesystem - can undelete work ??

    i googled for help on ext3 undelete, but all i found was for ext2fs. can undelete be accomodated for an ext3 filesystem ??? ne suggestions?? thx

    Started by UnDetEctEd, 09-09-2004
    • Replies: 7
    • Views: 78,317
    03-22-2007 Go to last post
  7. 403 Forbidden message - Using .htaccess for a folder on the

    Trying to set up /home/httpd/mydomain/customer with .htaccess. When I type "" I get get the following error ...

    Started by kevinm2, 06-23-2004
    • Replies: 8
    • Views: 49,832
    06-25-2004 Go to last post
  8. SHV4, SHV5 Rootkit Installed

    A customer of mine called me today and told me he thought his Linux FC 2 system was hacked. His dedicated server provider informed him of DOS...

    Started by ServerSurgeon, 10-22-2005
    • Replies: 3
    • Views: 48,783
    11-04-2005 Go to last post
  9. How to check user rights ?

    Hi, Is there a tool/script that gives me a print of the total user information about there rights ? Like a blue-print of the total Linux security...

    Started by Birdy_the, 02-22-2005
    • Replies: 5
    • Views: 47,341
    02-25-2005 Go to last post
  10. How can I protect a folder with a password?

    I need to password-protect my directories, because I don't want my boss to see everything I save or download. He obviously knows the 'root' password...

    Started by silviapreda, 12-11-2004
    • Replies: 7
    • Views: 47,114
    02-15-2008 Go to last post
  11. hosts.allow and hosts.deny help

    My FC5 box keeps getting hammered by what I assume is a dictionary attack. Here is part of my secure log: <code> --------------------- SSHD Begin...

    Started by PortDreams, 09-27-2006
    • Replies: 6
    • Views: 47,010
    01-11-2007 Go to last post
  12. rsh permission denied

    Hi All, I am having an issue where I am getting a permission denied message when I tried to RSH into a Linux Red Hat AS 3.0 box from Windows...

    Started by Tony Luong, 01-27-2005
    • Replies: 6
    • Views: 43,907
    01-28-2005 Go to last post
  13. SUID, GUID, Sticky Bit

    I'd like to discuss the uses and adavantages of SUID, GUID, and the sticky bit. I've just read that if SUID and GUID permissions are set, then the...

    Started by bpark, 03-28-2003
    • Replies: 3
    • Views: 43,711
    03-30-2003 Go to last post
  14. Change file permissions recursively (but not affecting directories)

    Hi Is it possible to change file permissions recursively (let's say to 600) without affecting permissions of the directories where the files are...

    Started by mpblue, 07-27-2005
    • Replies: 5
    • Views: 35,456
    05-27-2009 Go to last post
  15. Zone alarm/alternative

    Hello, would zone alarm work on linux? if it does, will it work good? and if it doesnt, are there other firewalls very much like it so that i can...

    Started by vampire slayer, 02-19-2005
    • Replies: 4
    • Views: 32,297
    03-29-2009 Go to last post
  16. How to edit iptables

    Hi, I want to change the already written script of iptables and reflect the new changes. the step i am following are as .. services iptables...

    Started by DanglingChap, 01-19-2009
    • Replies: 5
    • Views: 28,187
    01-21-2009 Go to last post
  17. OpenSSH - disallowing root login

    I'd like to disallow direct root login to the server. However he should be allowed to execute certain set of commands via ssh. I've done it using...

    Started by nico911, 01-09-2007
    • Replies: 6
    • Views: 28,174
    01-11-2007 Go to last post
  18. iptables firewall to block p2p traffic using ipp2p help pls

    Hello, I'm trying to get rid of kazaa and bittorrent traffic going through my box, and am having a crazy time trying to fix iptables. I've...

    Started by Atari, 08-10-2004
    2 Pages
    1 2
    • Replies: 10
    • Views: 28,168
    11-27-2008 Go to last post
  19. Strange port 31337 Elite

    When I nmap my computer, it gives this strange port: "31337/tcp open Elite" What's this all about? I wasn't there last time I nmapped myself.

    Started by jugio, 10-30-2005
    2 Pages
    1 2
    • Replies: 12
    • Views: 27,277
    12-01-2005 Go to last post
  20. How to find out when a user account is created?

    Hi all, I had asked this question in another thread but there was no response. Since the question was unrelated to the topic of that thread, I...

    Started by rizi, 05-16-2008
    • Replies: 5
    • Views: 26,647
    05-30-2008 Go to last post

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