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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 linuxforums.org 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: 74,367
    01-11-2010 Go to last post
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  1. Top CVEs exploited

    Hey folks, I'm try to get a list of the latest top cves exploited in the wild (active)? Any ideas where can I find this information? Thanks!

    Started by sh4ka, 08-31-2018
    • Replies: 1
    • Views: 992
    08-31-2018 Go to last post
  2. is working on no-sudo-account more secure

    On windows I was afraid of keyloggers and although I was the only PC user and only myself had physical access to my PC, I always created second user...

    Started by kenpo, 07-27-2018
    • Replies: 0
    • Views: 1,455
    07-27-2018 Go to last post
  3. How to block multiple ports in iptables, ipset?

    Hello, on CentOS 6, iptables 1.4.7 i can use rule to block IPs in my IPSet from accessing one port, example SSH: -A INPUT -p tcp --dport 22...

    Started by postcd, 01-15-2018
    • Replies: 8
    • Views: 6,183
    01-24-2018 Go to last post
  4. ssh: starting different application instead of bash - secure?

    Hi, not sure if that's the right category here. I have the following setup: We are using a text based application (written in C), which...

    Started by tjareson, 09-29-2014
    • Replies: 5
    • Views: 3,299
    12-13-2017 Go to last post
  5. Server Flooded. With what? At What?

    The IP 13.88.14.18 hit us with 2TB of data in under 5 minutes. To stop the flood, we have been forced to null route the server. 13.88.14.18 was...

    Started by Rob-0, 12-01-2017
    • Replies: 0
    • Views: 1,618
    12-01-2017 Go to last post
  6. selinux and iptables

    Hello, i would like to have more idea about my setup i have this server for apache (had wordpress) and another, for mysql. i set them up...

    Started by fles, 11-26-2017
    • Replies: 0
    • Views: 1,015
    11-26-2017 Go to last post
  7. SELinux access to file

    Hello everyone, I recently started to work with SELinux and its permissions and have encountered a problem. I want to open and write the...

    Started by Patrick-IT, 11-22-2017
    • Replies: 0
    • Views: 827
    11-22-2017 Go to last post
  8. File system granularity levels

    Is there a way to give permission levels go beyond READ. WRITE and EXECUTE. for example, if i want to restrict copy certain files to usb drives, it...

    Started by djpexhibit, 05-16-2017
    • Replies: 9
    • Views: 4,107
    11-14-2017 Go to last post
  9. How do you verify signatures?

    For context, I need to verify Qubes-OS. Link: https://www.qubes-os.org/security/verifying-signatures/ I've been using Linux for 2 years now but I...

    Started by Alire, 11-01-2017
    • Replies: 1
    • Views: 1,124
    11-01-2017 Go to last post
  10. Unauthorized USB uploads...whats the name of the program?

    I just did a fresh install of Fedora 26 on my laptop. I had previously installed an app that prevents unauthorized persons from sticking a...

    Started by Raafi, 07-21-2017
    • Replies: 1
    • Views: 1,031
    10-25-2017 Go to last post
  11. Intercept executed command and validate

    I need to know is it possible to intercept user executed command in loadable kernel module. I know that system calls can be intercepted such as...

    Started by djpexhibit, 10-23-2017
    • Replies: 2
    • Views: 891
    10-24-2017 Go to last post
  12. Got Centos. Do i need LPS Linux for some tasks?

    Hi, I've got Centos installed on VMware. Sometimes i want to check a dodgy link, do some online banking or secure related operations on it...

    Started by itrelated, 10-16-2017
    • Replies: 2
    • Views: 1,103
    10-17-2017 Go to last post
  13. Is the Linux OS drive fully encrypted or can i do more?

    Hello, when i do "sudo lsblk" on Ubuntu 16.04.3 LTS cryptsetup 1.6.6, i see: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT...

    Started by postcd, 10-07-2017
    • Replies: 2
    • Views: 1,244
    10-08-2017 Go to last post
  14. iptables question, how fatal it is if it can not find IP Set?

    Hello, i am on CentOS 6, 2.6.32 kernel. and i installed "ipset" package. Now i created new ip set and populated it with IPs, i activated...

    Started by postcd, 09-29-2017
    • Replies: 0
    • Views: 951
    09-29-2017 Go to last post
  15. SELinux implementation with virtual machines

    I am working with SELinux for my final year project.My objective is to show how to prevent zero day exploits with SELinux.I am planning to use...

    Started by nengo, 10-08-2007
    • Replies: 3
    • Views: 1,898
    09-19-2017 Go to last post
  16. Firewall rules to drop all traffic on port 80 and 443 but allow wget .

    Hello all, I have a interesting situation here. My current situation is: I have a Linux server which acts as a gateway for several other Linux...

    Started by terrywhitejr2000, 09-11-2017
    • Replies: 0
    • Views: 1,107
    09-11-2017 Go to last post
  17. How can i redirect to other IP without "iptables -t NAT" ?

    Hello, i was curious which other method/s i can use to redirect incoming connection to different IP? Beside using "iptables -t NAT" kind of rule? ...

    Started by postcd, 07-29-2017
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,700
    08-03-2017 Go to last post
  18. Top Reasons Why Linux Server Needs 2FA

    What are the process to secure linux servers?

    Started by reve-secure, 07-09-2017
    • Replies: 2
    • Views: 2,989
    07-27-2017 Go to last post
  19. System logging vs Auditing

    Hi all. I've got Oracle Linux 7 and I need to log events related to users logons, processes start\stop and some other in order to be in compliance...

    Started by Olegg, 07-21-2017
    • Replies: 2
    • Views: 1,884
    07-24-2017 Go to last post
  20. Post How can i iptables block hostname instead of IP and on partial match?

    Hello, how can i on Linux (CentOS 6 in my case) block all incoming connections (maybe better to say deny forwarding of the network connection...

    Started by postcd, 06-25-2017
    • Replies: 3
    • Views: 5,637
    07-04-2017 Go to last post

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