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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: 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	40,742
Sticky: Alert (TA16-250A) The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations tronayne	09-07-2016 06:25 AM by tronayne	0	13,325
Sticky: The OWASP Top 10 for 2013 unSpawn	06-15-2013 05:42 AM by unSpawn	0	18,083
Sticky: Failed SSH login attempts ( 1 2 3 ) Capt_Caveman	01-03-2006 03:22 PM by unSpawn	38	227,868
Sticky: More Alerts Alert (TA14-017A) UDP-Based Amplification Attacks (Revised 12 Apr 2016) tronayne	07-14-2020 10:32 AM by RickDeckard	2	30,777
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,095
Deleted pub & priv keys locally but can still login remote bulgin	04-27-2019 03:02 PM by smallpond	1	717
gpg / gpg-agent -- Can't connect to /root/.gnupg/S.gpg-agent jrtayloriv	06-03-2019 10:06 AM by MensaWater	9	140,649
what is the valid delimiters for hosts.allow? ultrakiasu	05-04-2019 04:58 AM by unSpawn	4	768
Ubuntu security vs Linux Mint security? ( 1 2 ) Gregory.Opera	05-14-2019 06:37 PM by cynwulf	22	4,824
How to selectively block browser scripts starkid	05-22-2019 06:51 PM by hydrurga	1	603
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	1,674
dd for srubbing disk for text ( 1 2 ) Linux_Kidd	05-10-2019 12:48 AM by pan64	17	1,658
[SOLVED] command not allowed TTY=unknown wat	06-18-2019 06:11 AM by hazel	2	13,947
[SOLVED] Could you advise some useful tools for penetration testing? ( 1 2 ) RyanTmps	06-18-2019 03:32 PM by sevendogsbsd	16	1,476
Patching infrastructure daviddon	05-16-2019 12:01 PM by hydrurga	12	841
Strange IPs in my firewall log lucmove	05-09-2019 10:39 PM by astrogeek	8	769
Regarding to the LEACH security rakesh319	05-12-2019 05:40 PM by knudfl	4	680
LXDM/LXDE Logging Bad Usernames chrisr710	06-15-2019 06:45 PM by chrisr710	0	894
login remote is not possible anymore rolandbro	05-12-2019 07:24 PM by berndbausch	2	558
unable to execute cron from root user indraindrajit71	05-06-2019 07:18 AM by TB0ne	1	2,231
Sudo and veracrypt calling IP addresses on password entry Frickymind	04-25-2019 04:29 PM by hydrurga	14	1,867
Nginx Authentication yash1990	05-17-2019 06:14 AM by tyler2016	8	3,799
[SOLVED] SELinux issue while configuring rsyslog michael_hoang	05-06-2019 03:45 PM by michael_hoang	6	10,828
Patching Solution for Small Lab daviddon	05-15-2019 08:53 AM by hydrurga	2	584
Modsecurity nginx keep blocking /phpmyadmin/index.php newbie14	05-23-2019 06:03 AM by newbie14	13	3,772
multi factor authentication and hardware tokens schmi85	05-03-2019 02:50 AM by schmi85	3	713
unable to remote login with ssh rolandbro	05-23-2019 09:36 PM by drillsar	8	1,347
What does line "testuser ALL = NOPASSWD: /usr/sbin/smartctl" indicate ? vbmade2000	05-20-2019 04:18 PM by petelq	2	615
Connections (secure-log) Begin shows phpmyadmin user denied newbie14	06-04-2019 10:04 AM by newbie14	9	1,620
Rootkit Hunter tells me I have possible rootkits Chrislw324	05-04-2019 04:56 AM by unSpawn	9	3,428
Fail2ban not picking settings newbie14	05-25-2019 12:07 PM by newbie14	13	1,265
New server with cron entries error newbie14	05-13-2019 09:03 AM by TenTenths	6	2,265
How to prevent polkit and authentication failure further ( 1 2 ) newbie14	05-25-2019 11:16 AM by newbie14	20	9,071
[SOLVED] Encryption within Encryption MC Reddy	05-16-2019 07:40 AM by MC Reddy	3	833
csf invalid chain webx99	05-04-2019 05:17 AM by unSpawn	3	1,472
Failed to start User Manager for UID xxxxx. rufa	05-24-2019 03:06 AM by marciano-es	4	14,339
[SOLVED] Restrict sshd to login only ( 1 2 3 ) jca002	05-18-2019 10:30 AM by Turbocapitalist	35	1,793
[SOLVED] IPTABLES log to file any input traffic mackowiakp	05-31-2019 02:23 PM by astrogeek	9	1,636
Ansible Unlock Accounts elalexluna83	06-09-2019 04:31 PM by vincix	4	3,382
[SOLVED] Alpine on a Laptop anon033	05-28-2019 03:21 AM by jsbjsb001	11	1,222
What to do with old/expired SSL Cert(s)? Latitude	06-09-2019 06:32 PM by RickDeckard	2	735
hacker wiping out git repositories for ransom hemlocktree	05-05-2019 08:53 AM by BW-userx	11	867
easy-rsa building CA takes a short time mirek_adept	05-14-2019 10:26 PM by ntubski	1	717
Keyrings... what's in ~/.local/share/keyrings/* ? lostinxlation	04-26-2019 11:10 AM by ondoho	8	4,565
Restrict RDP User LeeMChildress	05-21-2019 09:33 AM by TB0ne	1	1,148
[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	719
Disallow users to mount usb flash drives or HDD FBorges22	05-22-2019 09:50 AM by FBorges22	3	1,649
Why I can not see "selinux" module with "lsmod" command? -Snake-	06-09-2019 02:50 AM by -Snake-	3	1,091
which one is executed first ip_forward=1 or iptables FORWARD Drop abd_bela	06-13-2019 04:10 PM by vincix	2	645
Nginx and modsecurity logs not appearing in daily logwatch output. newbie14	06-02-2019 11:23 PM by newbie14	8	1,339
[SOLVED] LUKS Encryption is slow after moving disk to an older computer upnort	06-05-2019 12:23 PM by upnort	4	2,086
Allow only traffic from Whonix-Gateway cerber	06-14-2019 09:45 PM by cerber	0	1,034
vpn marius09	05-09-2019 09:19 AM by TenTenths	1	616
SQLMAP fails to fingerprint a DBMS llee4131	05-15-2019 03:44 PM by llee4131	0	1,771
Computer connecting to malicious IPs emerald1475	05-09-2019 08:16 PM by frankbell	3	853

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