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Linux - Security

Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.

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Rating Thread / Thread Starter	Last Post	Replies	Views
Sticky: More Alerts Alert (TA14-017A) UDP-Based Amplification Attacks (Revised 12 Apr 2016) tronayne	07-14-2020 10:32 AM by RickDeckard	2	30,799
Sticky: If you infected by any of these recent ELF malware cases please contact us? ( 1 2 ) malwaremustdie	04-22-2019 10:06 PM by malwaremustdie	21	40,833
Sticky: Alert (TA16-250A) The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations tronayne	09-07-2016 06:25 AM by tronayne	0	13,349
Sticky: The OWASP Top 10 for 2013 unSpawn	06-15-2013 05:42 AM by unSpawn	0	18,101
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,239
Sticky: Failed SSH login attempts ( 1 2 3 ) Capt_Caveman	01-03-2006 03:22 PM by unSpawn	38	228,046
configure ufw zpimp	07-30-2019 11:12 AM by scasey	2	822
Rkhunter gives warnings about large shared memory segments and a few strange files Seniark	07-29-2019 07:02 AM by StormFiber	6	17,763
Brute force forgotten characters in password? Gremlin99	07-28-2019 06:39 PM by LU344928	13	1,178
[SOLVED] Hide metasploit ip address cerber	07-28-2019 05:18 AM by unSpawn	1	1,809
[SOLVED] Customization (more details) of passwd output command (via libpam-cracklib) during user account password change l0f4r0	07-25-2019 01:49 PM by l0f4r0	11	3,130
How to completely stop mod_proxy and probing on nginx? ( 1 2 ) newbie14	07-24-2019 01:53 PM by rnturn	16	4,609
SOCKS 5 proxy software that accepts an HTTP proxy as its parent proxy Ulysses_	07-23-2019 03:45 PM by Ulysses_	0	727
Firefox is unsafe? Slackware_fan_Fred	07-20-2019 03:50 PM by scasey	12	1,232
[SOLVED] Error opening Display (xhost) procfs	07-19-2019 03:54 AM by procfs	6	9,753
Linux ACL odd output mr.aghazade	07-18-2019 08:47 AM by scasey	3	565
[SOLVED] How to avoid permissions problems (newb) jones5	07-18-2019 07:11 AM by TB0ne	13	1,019
Is there any software that will remove important directories if I do not use my OS for a set period?( newb) jones5	07-18-2019 06:29 AM by Geist	6	695
Booting in insecure mode - how to secure it again? mgketteridge	07-17-2019 08:06 AM by mgketteridge	2	1,535
restrict sudo mv access to specific directory awreneau	07-16-2019 11:34 AM by awreneau	3	1,786
PAM & SUID bit on /usr/bin/passwd ("Authentication Token Manipulation Error") l0f4r0	07-14-2019 05:46 PM by ehartman	3	1,529
Permissions Issues -- 774 ( 1 2 ) BW-userx	07-13-2019 09:35 PM by Turbocapitalist	29	4,463
router, tor, i2p and iptables anon033	07-13-2019 07:13 PM by scheidel21	2	1,382
[SOLVED] SELinux sandbox problem with GUI app _alex_	07-12-2019 02:04 PM by _alex_	4	1,034
Is fail2ban useful on servers which only use SSH keys? Mark_667	07-12-2019 06:18 AM by wpeckham	4	3,074
MDS Zombieload protection on Ubuntu vincix	07-09-2019 05:12 AM by vincix	2	1,429
Why crash certbot-auto after creating virtual environment ? fussel55	07-09-2019 12:33 AM by bathory	1	804
Content Security Header? drillsar	07-08-2019 07:26 PM by berndbausch	1	675
Keep getting permission denied for nginx server on Centos 7 newbie14	07-05-2019 06:01 PM by BarryQualp	4	3,886
Orbot for Linux Mint seenab	07-04-2019 06:05 PM by battlestationX	9	6,343
DDOS Deflate ov4n	07-04-2019 03:50 AM by TenTenths	3	1,043
How pam authentication works with ssh keys ? paraggupta1989	07-03-2019 11:58 PM by Turbocapitalist	3	9,191
/etc/shadow file has been modified MALDATA	07-01-2019 09:42 AM by ehartman	9	3,528
Best VPN 2019 ( 1 2 ) carlito386	07-01-2019 04:23 AM by michaelxxl	27	2,199
How to remotely backup and administer over the net without compromising security? ( 1 2 ) Doug Hutcheson	06-30-2019 09:16 AM by TB0ne	22	1,463
[SOLVED] /etc/hosts block lists anon033	06-30-2019 02:48 AM by ondoho	5	810
Allow specific command to run without password Domarius	06-29-2019 04:05 PM by Domarius	3	653
[SOLVED] Weird netstat output ( 1 2 ) jazzy_mood	06-29-2019 01:12 PM by jazzy_mood	22	2,820
Info please actinide	06-28-2019 04:34 AM by JJJCR	3	938
detecting rootkits Debian w/ XFCE desktop armchairrambo	06-22-2019 06:36 AM by moxieman99	2	837
[SOLVED] Could you advise some useful tools for penetration testing? ( 1 2 ) RyanTmps	06-18-2019 03:32 PM by sevendogsbsd	16	1,484
[SOLVED] command not allowed TTY=unknown wat	06-18-2019 06:11 AM by hazel	2	14,054
LXDM/LXDE Logging Bad Usernames chrisr710	06-15-2019 06:45 PM by chrisr710	0	902
Allow only traffic from Whonix-Gateway cerber	06-14-2019 09:45 PM by cerber	0	1,046
[SOLVED] I changed the root password, but the password for software updates is still the old one triplemaya	06-13-2019 07:33 PM by evo2	4	724
which one is executed first ip_forward=1 or iptables FORWARD Drop abd_bela	06-13-2019 04:10 PM by vincix	2	648
What to do with old/expired SSL Cert(s)? Latitude	06-09-2019 06:32 PM by RickDeckard	2	741
Ansible Unlock Accounts elalexluna83	06-09-2019 04:31 PM by vincix	4	3,436
Why I can not see "selinux" module with "lsmod" command? -Snake-	06-09-2019 02:50 AM by -Snake-	3	1,104
[SOLVED] LUKS Encryption is slow after moving disk to an older computer upnort	06-05-2019 12:23 PM by upnort	4	2,110
Connections (secure-log) Begin shows phpmyadmin user denied newbie14	06-04-2019 10:04 AM by newbie14	9	1,641
gpg / gpg-agent -- Can't connect to /root/.gnupg/S.gpg-agent jrtayloriv	06-03-2019 10:06 AM by MensaWater	9	140,817
First time SSH login not asking for password and logging in and creating home directories. witchkinkofangmar	06-03-2019 09:57 AM by witchkinkofangmar	4	1,711
Nginx and modsecurity logs not appearing in daily logwatch output. newbie14	06-02-2019 11:23 PM by newbie14	8	1,362
[SOLVED] IPTABLES log to file any input traffic mackowiakp	05-31-2019 02:23 PM by astrogeek	9	1,688
[SOLVED] Alpine on a Laptop anon033	05-28-2019 03:21 AM by jsbjsb001	11	1,228

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