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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: 71,840
    01-11-2010 Go to last post
  1. Squid Proxy blocking all sites

    Hello I am moderately familiar with Ubuntu linux and a novice with Squid Proxy. I am trying to setup a squid proxy server to secure my small...

    Started by starpr0j3ctr, 02-24-2011
    • Replies: 1
    • Views: 7,023
    03-18-2011 Go to last post
  2. Web Security

    Hello, how are you? we know that, if we want to make a good web page, we should make a security. I only know about XSS and SQL injection Attacks....

    Started by vakhoQ, 03-17-2011
    • Replies: 0
    • Views: 735
    03-17-2011 Go to last post
  3. How secure is the login password?

    How secure is /etc/shadow really? What kind of hash function does the system use to secure the passwords and how secure is it really? I've read...

    Started by SkyHiRider, 03-13-2011
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 2,771
    03-16-2011 Go to last post
  4. why windows viruses doesnt effect linux?

    hi guys as title says why a virus for windows operating system wont work on ubuntu?or is there a possibility a windows operating virus can...

    Started by johnhagen, 02-19-2011
    • Replies: 7
    • Views: 3,288
    03-13-2011 Go to last post
  5. Want to Set up a Firewall server

    hi guys, I wanted to set up a firewall server. one that will run on crap parts. I was talking to a guy in england who said open bsd was the best...

    Started by mattig89ch, 02-20-2011
    2 Pages
    1 2
    • Replies: 12
    • Views: 3,153
    03-04-2011 Go to last post
  6. [SOLVED] Securely delete files?

    What would a good program be for securely deleting large amounts of files? I understand I can use shred for individual files or directories, but is...

    Started by TTIO, 03-02-2011
    • Replies: 5
    • Views: 2,696
    03-03-2011 Go to last post
  7. bad blackslash usage openvpn

    helo I am receiving this message on my vpn gui Options warning: Bad backslash ('\') usage in client.ovpn:1: remember that backslashes are...

    Started by pinguim007, 12-10-2010
    • Replies: 1
    • Views: 3,548
    02-27-2011 Go to last post
  8. autoenrollment of SSL certificates for Linux desktops

    Hello, we are searching solution for autoenrollment of user SSL certificates to linux desktops joined to Windows domain. We prefer solution, which...

    Started by linuxak, 02-24-2011
    • Replies: 0
    • Views: 2,438
    02-24-2011 Go to last post
  9. Unable to connect to ssh server

    Hi, I am having issues connecting to a remote host via ssh and I suspect that this is due to some security restrictions on their side. I can't be...

    Started by pberger, 02-19-2011
    • Replies: 5
    • Views: 5,211
    02-21-2011 Go to last post
  10. Forbid >2 login from the same IP

    Hello all, I've a server with a common login (with "common" I mean several users use the same login). What I want to forbid is a "second" login...

    Started by gpayo, 02-16-2011
    • Replies: 1
    • Views: 857
    02-17-2011 Go to last post
  11. PGP signed email

    Hi all, I want to sign my email with an PGP signature. I've generated a DSA signature and included it into my Kmail setup. When I send an email...

    Started by Keessince1988, 02-02-2011
    • Replies: 3
    • Views: 2,162
    02-15-2011 Go to last post
  12. 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: 1,544
    02-14-2011 Go to last post
  13. [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: 1,410
    02-13-2011 Go to last post
  14. 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: 1,241
    02-09-2011 Go to last post
  15. 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: 3,497
    02-02-2011 Go to last post
  16. 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: 681
    02-01-2011 Go to last post
  17. 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: 2,127
    02-01-2011 Go to last post
  18. 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: 936
    01-28-2011 Go to last post
  19. 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: 3,745
    01-28-2011 Go to last post
  20. 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: 5,446
    01-26-2011 Go to last post

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