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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: 52,836
    01-11-2010 Go to last post
  1. iptables+squid

    hi! everybody i am building the firewall. i want to combine iptables and squid. so iptables manages 2,3,4 layers, iptables can not process...

    Started by myangel, 07-11-2009
    • Replies: 3
    • Views: 2,362
    08-24-2009 Go to last post
  2. Blocking a port for ip in my lan and allow it for others

    Hello all, I want a situation where i want to restrict one pc in my lan not to browse the internet, to block http, https ports for that computer and...

    Started by sapanda, 07-24-2009
    • Replies: 2
    • Views: 1,458
    08-24-2009 Go to last post
  3. PHP exec security

    so I was bored and wanted to create a small web interface for a few tasks. currently, I'm using POST to get arguments and then PHP's exec() to run a...

    Started by NeoIce, 07-24-2009
    • Replies: 3
    • Views: 1,915
    08-23-2009 Go to last post
  4. 777 permission for a folder

    Hi, I know that it's possible to upload files to a folder with 777 permission. How do i do this ? Just tried using POST method, but it doen's...

    Started by joemon, 08-18-2009
    • Replies: 8
    • Views: 2,071
    08-18-2009 Go to last post
  5. Security problem

    Dear all Am running REDHAT 4 running application netavis on my server am using windows client program to access netavis application my problem...

    Started by shafey, 08-18-2009
    • Replies: 2
    • Views: 893
    08-18-2009 Go to last post
  6. Securing Samba, Freecom network drive works when it shouldn't?

    I'm confused about my network drive. I've got a Freecom 400GB network drive, with build in FTP and SMB server. I'm not very experienced when it...

    Started by Freston, 08-08-2009
    • Replies: 1
    • Views: 2,634
    08-15-2009 Go to last post
  7. need your help for IKEV2

    my project want to implement IKEv1 and IKEv2, which open source can help me and which code can easy read and modified? Thanks a lots in advance! ...

    Started by IanWu, 08-05-2009
    • Replies: 0
    • Views: 884
    08-05-2009 Go to last post
  8. NoScript-Unnecessary?

    I run NoScript in my Firefox browser in Windows and some time ago decided to add it to my Linux FF (can't recall my thought process at the time)....

    Started by Odyssey, 08-03-2009
    • Replies: 1
    • Views: 2,623
    08-04-2009 Go to last post
  9. pgp encrypt files?

    i created a PGP encryption key on xubuntu 9.04, but i dont know how to actually encrypt the files. i would really appreciate any help, i have a...

    Started by thesimplecreator, 05-09-2009
    • Replies: 3
    • Views: 1,816
    08-03-2009 Go to last post
  10. Iptables script and Kubuntu rc*.d directory

    Using Kubuntu 9.04 I have iptables script. I found a few sites on the internet that say to put the script in /etc/rc*d Should I put it in all the...

    Started by JoeS, 08-01-2009
    • Replies: 0
    • Views: 1,180
    08-01-2009 Go to last post
  11. Are stealthed ports safer then closed ports?

    I have been reading up a little on this topic. I use to think a computer's ports must be stealthed. But from the new information I am reading that is...

    Started by cms9000, 07-29-2009
    • Replies: 2
    • Views: 1,279
    07-30-2009 Go to last post
  12. Restricted Shell

    I have a user, and I want him to be able to run exactly one command when he logs in. The command is under /usr/bin. It is called by a script on a...

    Started by Vintovka, 07-28-2009
    • Replies: 1
    • Views: 3,451
    07-28-2009 Go to last post
  13. LINUX has a RootKit problem!

    Linux is not very secure any more!...we had a major attack on one of our linux boxes (redhat) which involved a recompile of the kernel using a...

    Started by neko, 07-07-2003
    • Replies: 6
    • Views: 6,135
    07-27-2009 Go to last post
  14. Buffer Overflow (Stack)

    Hi, I've been making some C programs and accidentally found one to be vulnerable, I'm experimenting with exploiting it like an attacker would. ...

    Started by caser, 07-02-2009
    • Replies: 1
    • Views: 1,269
    07-25-2009 Go to last post
  15. How do you manage your DMZ server accounts?

    I'd just like to know what you use for user account management on your DMZ servers? Do you use the same authentication realm as internally? Do...

    Started by humbletech99, 07-23-2009
    • Replies: 0
    • Views: 691
    07-23-2009 Go to last post
  16. By design security issues with linux desktop default limited accounts

    The linux desktop default limited accounts do not provide as much security as advertised (in most if not all linux distributions, although not all...

    Started by mihaiv, 07-21-2009
    • Replies: 0
    • Views: 769
    07-21-2009 Go to last post
  17. Serious discussion about linux security

    Where can I have a serious discussion about linux security? That is a discussion with people that know the field well and are influential on linux...

    Started by mihaiv, 07-17-2009
    • Replies: 1
    • Views: 783
    07-17-2009 Go to last post
  18. User access restriction tool

    Kudos My company is dealing with very sensitive and secret information so we need to implement some security measures. My task is the OS and...

    Started by navidpaya, 07-12-2009
    • Replies: 2
    • Views: 994
    07-15-2009 Go to last post
  19. passwd , passwd-, passwd.OLD

    I see three passwd files in /etc/ . Normally only one is supposed to be there called passwd :rolleyes: but what the other two for , they look...

    Started by vickey_20, 06-22-2009
    • Replies: 5
    • Views: 6,073
    07-15-2009 Go to last post
  20. [SOLVED] ipTables rule to block a port for all internal IP Addresses except one

    I have a Virtual Dedicated Server with 6 IP Addresses. 1 for the server and 5 for other websites. I want to block the access to port 9999(control...

    Started by pranaysharmadelhi, 07-07-2009
    • Replies: 2
    • Views: 1,914
    07-14-2009 Go to last post

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