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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: 52,844
    01-11-2010 Go to last post
  1. Windows and ARP tables + MITM = DOS

    I've been screwing around with ettercap the past couple of days and I just figured out what all of my problems are: the ARP poisoning in ettercap. ...

    Started by prochobo, 06-18-2006
    • Replies: 0
    • Views: 2,485
    06-18-2006 Go to last post
  2. Cron not working

    I am using redhat FC2, i realised that the crond is always not very stable. Everytime i have to reboot the box in order to get it working after a...

    Started by kenny2004, 09-18-2004
    • Replies: 4
    • Views: 11,510
    06-14-2006 Go to last post
  3. Security Survey

    Hi, My colleague and I are doing a research about network security. This research is in cooperation with the college of Ghent, Belgium. A part...

    Started by coupe, 06-06-2006
    • Replies: 0
    • Views: 860
    06-06-2006 Go to last post
  4. Dnat to server located in local network

    Hello all , I read Andersson's manual about iptables. The output of iptables -t nat -L are as follows debian:/home/# iptables -t nat -L Chain...

    Started by ek100, 06-05-2006
    • Replies: 0
    • Views: 872
    06-05-2006 Go to last post
  5. firewall issue

    Hi, I have a FC 3 box as my nat/firewall. It is running firestarter. My nework looks similar to this: ,-------------------------, ...

    Started by q1001001, 05-30-2006
    • Replies: 0
    • Views: 848
    05-30-2006 Go to last post
  6. 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: 163,573
    05-29-2006 Go to last post
  7. Writing SE Linux policy

    I'm trying to implement a policy for an ICQ client and, maybe, for other network clients that may provide a huge security leak within a user's...

    Started by kalium, 05-27-2006
    • Replies: 0
    • Views: 874
    05-27-2006 Go to last post
  8. Exclamation iptablesfirewall port block not working-urgent

    Hi, I have given my full setup info below step by step Note: when any of the link goes down i need to use the other link for both...

    Started by krishnan.gopal, 05-16-2006
    • Replies: 1
    • Views: 3,081
    05-27-2006 Go to last post
  9. MD5 is broken, Let's do SHA.

    Well, as some of you may be aware, an MD5 collision can be generated in like 17 seconds on a laptop. I'd like to see SHA-512 implemented at the...

    Started by jwilliams, 05-27-2006
    • Replies: 0
    • Views: 944
    05-27-2006 Go to last post
  10. Iptables and Exim

    I have an exim mail server running with no problems at all, recently I added apache to run a site and made it accessible to specific IPs with...

    Started by Slowfib, 05-16-2006
    • Replies: 1
    • Views: 1,970
    05-23-2006 Go to last post
  11. Unhappy Please I Need Your Help

    Does anyone know about counters? Someone told me that if you enter a group or site with a counter they can trace your internet service provider...

    Started by queenbee, 05-19-2006
    • Replies: 3
    • Views: 844
    05-19-2006 Go to last post
  12. Restrict WINSCP on Fedora server

    How would I restrict a windows user (using WINSCP) from: 1. Being to see anything in the file structure on the linux server EXCEPT his own home...

    Started by reggy, 05-18-2006
    • Replies: 0
    • Views: 1,852
    05-18-2006 Go to last post
  13. I seem to be sending spam

    Going through my logs this morning I found that sendmail has been sending out what looks like spam at 8.20 each morning. Sendmail runs once an hour...

    Started by Rotsky, 05-14-2006
    • Replies: 3
    • Views: 5,400
    05-17-2006 Go to last post
  14. FTP/TELNET Combined Query

    Hi Folks , I'm using RedHat 9.0 Server . Want to grant FTP access to a particular user say TEST but disallow him Telnet access . As in he should...

    Started by sachinh, 05-16-2006
    • Replies: 0
    • Views: 852
    05-16-2006 Go to last post
  15. /etc/services

    Hi, am i have to write down on /etc/services all the port that i like to block (i.e Yahoo messenger, MSN, IRC) what port windows messenger is...

    Started by kamtono, 04-14-2005
    • Replies: 4
    • Views: 8,209
    05-16-2006 Go to last post
  16. antivirus worth it?

    i was just wandering if everybody here thinks if i is worth installing an av on my system how effective these are and do they actully prevent linux...

    Started by Viper8896, 05-13-2006
    • Replies: 3
    • Views: 1,096
    05-13-2006 Go to last post
  17. Thumbs up How to test your Linux-Distro FIREWALL !

    Recently, I wrote an article about How to scan your Linux-Distro for Root Kits. Now that the machine is... clean! I think, a good thing TO-DO, is to...

    Started by, 05-06-2006
    • Replies: 0
    • Views: 6,878
    05-06-2006 Go to last post
  18. Red face vsftp home directory permissions

    Hi all, I am trying to set up an rh9 ftp server and wish to accept only picture files (non executable). In order to paste files (upload) into my...

    Started by devwink, 05-06-2006
    • Replies: 0
    • Views: 2,469
    05-06-2006 Go to last post
  19. Smile need help in configuring tripwire

    hi, I have installed tripwire on my machine. But i dont know how to setup the policy file, how to initialize the database, or how to make changes...

    Started by tnlg102, 02-07-2006
    • Replies: 1
    • Views: 1,470
    05-06-2006 Go to last post
  20. Need Urgent help please, server is hacked

    Haiii to all.... I was in deep trouble with my web server, which was hacked now. I am using an dedicated managed web server as I dont have much...

    Started by kiran ky, 05-05-2006
    • Replies: 3
    • Views: 961
    05-05-2006 Go to last post

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