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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: 73,269
    01-11-2010 Go to last post
  1. pam_unix(sshd:auth): conversation failed

    I'm using Ubuntu 8.04 with thin clients at an elementary school. When a student types in the wrong password (which happens often), it takes over 2...

    Started by kraigge, 02-21-2009
    • Replies: 3
    • Views: 25,594
    03-15-2009 Go to last post
  2. Question Adding Groups to Groups

    Using a GUI how to you add one group (with users) to another group (with other users)? In other words if you add Group A to Group B then B has all...

    Started by measekite, 03-11-2009
    • Replies: 0
    • Views: 840
    03-11-2009 Go to last post
  3. What is openssh doing?

    I'm having some problems with ssh into my university network. For the most part it works fine, but if I'm on the university wireless connection, it...

    Started by skroops, 01-12-2009
    • Replies: 2
    • Views: 1,241
    03-10-2009 Go to last post
  4. what is libcurl3 ?

    i always do the suggested updates, when they come up, and tonight i did one called libcurl3...I decided to look at it, and possib;y remove it with...

    Started by bigvoo, 03-06-2009
    • Replies: 1
    • Views: 4,401
    03-06-2009 Go to last post
  5. Query: TCP/IP security logging capabilites

    Dear Experts, I am reasonably new to the Linux networking. I am just wondering if the Linux networking stack records various attacks to the...

    Started by billysmithlq, 03-02-2009
    • Replies: 2
    • Views: 2,652
    03-03-2009 Go to last post
  6. selinux newuser problem

    hi i m new to selinux. i have installed selinux on my ubuntu hardy8.04 machine. it installed successfully. now i have created a new linux user and...

    Started by fileuploadoct08, 02-24-2009
    • Replies: 1
    • Views: 1,189
    02-26-2009 Go to last post
  7. Encapsulate ("tunnel") local outgoing packets using IPsec

    Can I encapsulate an outgoing IP packets using IPsec with different src/dst ip addresses using strongSwan? For example, the local host is...

    Started by arrowheart, 02-12-2009
    • Replies: 0
    • Views: 1,073
    02-12-2009 Go to last post
  8. question about default iptables config in ubuntu

    I was wondering about the security of the default iptables configuration in ubuntu. I know that it does not filter ICMP packets by default. Is that a...

    Started by LennythePingwin, 02-11-2009
    • Replies: 4
    • Views: 3,670
    02-11-2009 Go to last post
  9. Exclamation How actually packet traverse in IPTables

    suppose I have IPTable configured firewall on my box than according to the diagram of packet traversing in IPTables, the local process will be my...

    Started by priyadarshan, 02-11-2009
    • Replies: 1
    • Views: 2,301
    02-11-2009 Go to last post
  10. Keyboard-interactive authentication refused

    Hi All :D, Facing some problems with the password authentication with public/private key pairs in linux. Actually I had set my keys and tey were...

    Started by mail2sanand, 02-10-2009
    • Replies: 0
    • Views: 5,340
    02-10-2009 Go to last post
  11. [SOLVED] Can't update rkhunter

    I can't update rkhunter. Below is what is happening. How can I update to 1.3.4? Thanks for any help. # rkhunter --propupd File updated:...

    Started by iswigalot, 02-07-2009
    • Replies: 1
    • Views: 3,314
    02-07-2009 Go to last post
  12. Unhappy IPSec - Certificates

    Hi all, I am using open source ipsec-tools(racoon & setkey) for IPSec configuration. i am using Linux machine at one end and Windows XP machine...

    Started by Anandan, 01-30-2009
    • Replies: 0
    • Views: 1,128
    01-30-2009 Go to last post
  13. Full Command Logging?

    I am looking for a really good command logging tool to improve the auditing of my servers. I have previously used snoopy but this is currently a bit...

    Started by humbletech99, 01-28-2009
    • Replies: 0
    • Views: 1,145
    01-28-2009 Go to last post
  14. Exclamation Hey Im having problems with I guess trojans....?

    I was hoping someone here might be able to tell me how to remove any hidden attachments or files or anything of the likeness from existence. Is...

    Started by errigour, 01-26-2009
    • Replies: 2
    • Views: 989
    01-26-2009 Go to last post
  15. iptables ftp connection tracking

    Hi, Appreciate any advice on iptables with ftp connection tracking.The script below seem to work fine but I am not sure what am I missing. Did...

    Started by xdnox, 01-19-2009
    • Replies: 2
    • Views: 2,577
    01-21-2009 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: 29,905
    01-21-2009 Go to last post
  17. Blocking processes at startup

    I want to turn off several services which I do not use (I think?) when I connect to the internet. These are (in rc.0 order): httpd, mysql, samba,...

    Started by clickit, 01-15-2009
    • Replies: 2
    • Views: 1,087
    01-20-2009 Go to last post
  18. Samba Subdirectories

    My username is in the "users" group in /etc/passwd. I am a member of "groupx" in the /etc/group file. Here is the very basics that I am using right...

    Started by thehemi, 01-15-2003
    2 Pages
    1 2
    • Replies: 13
    • Views: 13,955
    01-16-2009 Go to last post
  19. Curious log entries on DPT=17071

    Last night 24 unique IP addresses all tried to 'connect' to port 17071 (using the UDP protocol) on my server within the course of a minute. Each...

    Started by Freston, 01-05-2009
    • Replies: 2
    • Views: 1,018
    01-05-2009 Go to last post
  20. iptables and vpnc

    I'm running VPNC on my wrt54g with DD-WRT vpn firmware. I'm using this script. When I telnet in and start VPNC everything runs smooth. I'm not...

    Started by lsmith, 01-02-2009
    • Replies: 1
    • Views: 4,965
    01-03-2009 Go to last post

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