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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: 73,511
    01-11-2010 Go to last post
  1. Special rule for shorewall maclist

    Dear all, im looking for a special shorewall rule. I need a maclist filter to allow registrated hosts to use the internet. Unknown hosts should...

    Started by sef01, 02-14-2011
    • Replies: 0
    • Views: 1,623
    02-14-2011 Go to last post
  2. [Debian] Shorewall installed, still ports open

    Hello I have installed shorewall onto my debian machine. I`m testing this because i want to use a VPS later but want to test all installations...

    Started by Josvds, 02-11-2011
    • Replies: 1
    • Views: 1,441
    02-13-2011 Go to last post
  3. Is it possible to block an established ftp session?

    We are setting up port forwarding in our linux box, and changed the listening server from port 21 to 4123. Enabled port forwarding: ACCEPT ...

    Started by etb717, 02-09-2011
    • Replies: 1
    • Views: 1,282
    02-09-2011 Go to last post
  4. OpenSSH sftp login using RSA/DSA keys

    Hello guys I'm trying to configure a secure SFTP server on debian. I've succesfuly configured it to allow users to log on only to file service...

    Started by nacek, 02-02-2011
    • Replies: 0
    • Views: 3,557
    02-02-2011 Go to last post
  5. port

    is there any command to check whether internet connection is available at a certain port or not??

    Started by kaushik016, 01-31-2011
    • Replies: 1
    • Views: 706
    02-01-2011 Go to last post
  6. default password !!!!!!

    a big holler out to all da linux experts .... am facing a lil issue here with UBUNTU 10.10 i jus managed to install it ,, nd i only set...

    Started by mackubex, 01-29-2011
    • Replies: 8
    • Views: 2,173
    02-01-2011 Go to last post
  7. BitTorrent - problem?

    I know that sites that uses BitTorrent are not entirely trustworthy, but is there any problem in Linux, as I'm thinking of downloading something...

    Started by TheStig95, 01-27-2011
    • Replies: 2
    • Views: 968
    01-28-2011 Go to last post
  8. DOS attack and IRC Server install

    Hi, I have a server with 1and1 - I've had notifications from them that my server has been attacked and is currently infected: These are the...

    Started by wmguk, 01-28-2011
    • Replies: 1
    • Views: 3,912
    01-28-2011 Go to last post
  9. Squid Installation Problem

    Hello all, recently upon installing Squid I am pretty sure the install went fine until i get this whenever i try to do something: FATAL: Unable to...

    Started by dirtydog7655, 01-25-2011
    • Replies: 1
    • Views: 5,846
    01-26-2011 Go to last post
  10. Pts

    Can someone tell me what "pts" means in konsole?:)

    Started by timepilot, 01-18-2011
    • Replies: 4
    • Views: 1,252
    01-25-2011 Go to last post
  11. linux hardening

    Hi, Which is the best remote linux hardening GUI tool.Is it posible to use that tool from windows system ? Thanks

    Started by rajeshku, 01-20-2011
    • Replies: 4
    • Views: 1,247
    01-25-2011 Go to last post
  12. Dynamic security context by PID

    I'm a newbie, and I have a question about whether or not a security context can be dynamically applied to a PID. Here's an example, I have a master...

    Started by dch, 01-21-2011
    • Replies: 0
    • Views: 915
    01-21-2011 Go to last post
  13. sshd attack?

    Hello. I'm new to these forums, but have been using linux for several month, lately I have been having issues where sshd loads many processes, all...

    Started by MrLeft, 01-15-2011
    • Replies: 2
    • Views: 15,968
    01-15-2011 Go to last post
  14. DOS Attacks from my Server as a source

    Hi all, today i got a message from my provider saying my server was disconnected from the network because my server is sending DOS attacks. ...

    Started by Defjam, 01-07-2011
    • Replies: 4
    • Views: 4,796
    01-12-2011 Go to last post
  15. SEC issue on regex recog

    Hi, I'm new to this forum and I need some explanation about the using of te regular expressions to gathering information, using SEC, on the logs...

    Started by velegi, 01-10-2011
    • Replies: 2
    • Views: 1,161
    01-10-2011 Go to last post
  16. Jail firefox.

    So i have been using Linux for a couple of years now and i still don't like the idea of my browser running naked on the interwebz, so i was going to...

    Started by TheJanitor, 01-06-2011
    • Replies: 4
    • Views: 1,551
    01-09-2011 Go to last post
  17. running sshd on a differnet port

    Hi, I have two different networks, A and B and need to be able to connect from A to B over the open internet. A is behind a firewall, B is...

    Started by parkejr, 01-07-2011
    • Replies: 4
    • Views: 1,475
    01-08-2011 Go to last post
  18. how to Avoid adding users to group like wheel?

    i just want to prevent from now on from all users maybe even root from adding other users to groups like wheel for example. I also want to know how...

    Started by yakikaki30, 01-07-2011
    • Replies: 1
    • Views: 819
    01-07-2011 Go to last post
  19. vim security hole

    Yesterday, while browsing in the newbie forum, I found something that astonished me. Someone had made a read-only file, loaded it into vi, altered...

    Started by hazel, 12-30-2010
    • Replies: 5
    • Views: 3,103
    01-02-2011 Go to last post
  20. Can a router be cleaned or formated?

    I got banned in a fun forum for defending myself from a psychotic stalker, who seemed to be hellbent on starting flame wars with me. The monster...

    Started by Cocoa, 12-31-2010
    • Replies: 2
    • Views: 808
    01-02-2011 Go to last post

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