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View Full Version : Security


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  1. fail2ban duplicate iptables rules
  2. [ubuntu] SCAP Workbench Security Guide for Ubuntu 18.04
  3. [all variants] Bionic Beaver Userlist
  4. [server] Cryptominer files deposited over samba - looking for advice
  5. Paranoia or sophisticated hack?
  6. Hardening Network Security Questions
  7. file sharing over network
  8. [SOLVED] Are These Files/Dirs Normal (found by chkrootkit)
  9. Apparmor setting
  10. [SOLVED] What is SSH Key Agent ?
  11. SElinux installed and removed. Apparmor doesn't seem fully installed
  12. [ubuntu] Granting sudo privilege for a user for certain executables
  13. Is Pulseaudio secure?
  14. Ubuntu 18.04 - pgl - how to install?
  15. [lubuntu] Lubuntu 18.04 LTS - Is it the case to enable or install a firewall?
  16. [all variants] Get root with a malicious script?
  17. System encryption with passphrase protected usb key, how to configure ubuntu boot
  18. looking for some DNS Leak Testing Tools Recommendation
  19. [all variants] Strange wireshark results?
  20. [ubuntu] Ubuntu security
  21. [ubuntu] 18.04 .desktop unstrusted application launcher
  22. [other] Ubuntu or other Linux distros vulnerable to VPNFilter?
  23. UFW Not Blocking Ports?
  24. [ubuntu] UFW Not Blocking Ports?
  25. [ubuntu] Can virus from Windows 10 laptop on same network affect my Ubuntu desktop?
  26. [ubuntu] Emailing Passwords: Single File Encryption for OS X and Linux??
  27. [SOLVED] Trying to Create Vault on Secondary Drive - enc File Not Found
  28. data recovery
  29. UFW can use text.txt file add to my black ip list ??
  30. XBox Forwarding and Shorewall
  31. Anything good or bad about Cryptomator?
  32. persistent bootable USB LUKS needed
  33. [ubuntu] NBDE (clevis and tang) support in 18.04
  34. RKhunter commands version check and update not connecting (solved)
  35. Does WPA3 require new hardware, firmware or software?
  36. CIS benchmark implementation issues with editing /etc/fstab
  37. [ubuntu] As Sudo User, Receive Prompt to "Enter root's password:"
  38. iptables not being restored on reboot
  39. ssh publickey authentication fails after n attempts
  40. I think I got hacked by some crypo mining malware
  41. [SOLVED] AppArmor profile fix for usr.lib.ipsec.stroke
  42. [ubuntu] Tergiversation trojan
  43. [ubuntu] Is this an issue re Meltdown/Spectre Flaw Mitigations?
  44. [ubuntu] Where is the security update for Thunderbird 52.8 to 52.9?
  45. New Variant of Spectre Security Flaw Discovered: Speculative Buffer Overflows
  46. [ubuntu] Ubuntu software application | Installed screen
  47. [other] Securing Ubuntu with CSF help
  48. [ubuntu] Gufw
  49. [SOLVED] ClamAV has detected a Trojan. Unix.Trojan.Vali-6606621-0
  50. [xubuntu] Can't open LUKS drive after upgrade to 18.04
  51. [ubuntu] Suspicious scripts in root cronjob
  52. [ubuntu] Using Snort rules on pcap file
  53. ubuntu samba on lokal network
  54. Iptables Understanding...
  55. [kubuntu] cryptsetup: lvm is not available
  56. [ubuntu] What is the meaning of this line ?
  57. Installation doesn't ask to encrypt home folder on 18.04
  58. Universe and Gnome Themes/Extensions
  59. [ubuntu] How much is safe /home encryption
  60. Does Anyone Know How to Use Wine Securely?
  61. Warning installing gufw
  62. [ubuntu] A virus or bot is trying brute force other servers
  63. [ubuntu] Chromium extension Click & Clean VPN vulnerability?
  64. [ubuntu_budgie] [Python] ImportError: No module named gnomekeyring
  65. [ubuntu] How to get the kernel text address in dmesg
  66. Securing Web service in ubuntu Apache
  67. Internal Wi-Fi Adapter vs External USB Wi-Fi Adapter
  68. Using stubby
  69. [kubuntu] Hundreds of entries in ufw.log - internal IP ?
  70. ModSecurity Install
  71. General browser vs. financial site browser
  72. [SOLVED] Ubuntu 18.04 - FF download denied
  73. Why is LibreOffice trying to access my Thunderbird profile folder ?
  74. Local server access only
  75. Can I make my own SSL for a local network application?
  76. [ubuntu] ufw blocks in log
  77. [ubuntu] public signiatures and gpg --keyserver messages
  78. iptables: What's the difference between DROP and REJECT
  79. L1TF Vulnerable
  80. Ubuntu 18.04 on Active Directory
  81. Does this script close off all other scripts?
  82. [all variants] GhostScript compromised?
  83. Restaurar de copia de seguridad en otro equipo
  84. Will security certificates be carried over when the computer is cloned?
  85. Iptables: how to open network time servers
  86. IPtables: Just how many ports are there?
  87. Block everything except for a few IP's
  88. Security Onion
  89. Multiple attempted logins from same IP
  90. Unclonable system
  91. [ubuntu] Snort Issues
  92. [all variants] Rule-based access control policy for the distributed Database
  93. LDAP, cryptolockers, and SAMBA
  94. [ubuntu] Manipulating System Files
  95. mariadb client ignores passwords right now for 16.04
  96. Recover SSH Settings
  97. TOR browser log in time
  98. Linux Kernel Security Threat
  99. Is the second Git Cola on Ubuntu Softwares a malware?
  100. [ubuntu] Did I get hacked?
  101. [SOLVED] Update notice with no details or tech descripition
  102. [ubuntu] Did I get hacked?
  103. [ubuntu] Port Configuration for SkypeforLinux: Bionic-beaver
  104. Open up SSH with any password
  105. ClamTk does not do anything
  106. [SOLVED] 10-2018 No-description 1.6Mb update?
  107. I was hacked
  108. measures against rootkits
  109. 18.04 was breached. Needing advice on hardening
  110. IPv6 still enabled
  111. [ubuntu] ufw enable error (missing policy for 'input')
  112. Unknown BIOS password set after following manual full encryption instructions ?
  113. [ubuntu] USB encrypted in one laptop cannot be opened in a different laptop
  114. [ubuntu] Security tools show several risks (rkhunter and chkrootkit)
  115. Update Firmware After Hack
  116. [SOLVED] Home Server System Compromised?
  117. [server] Errors received during server hardening
  118. Do I have a rootkit?
  119. Chkrootkit and tcpd
  120. Trace the user back
  121. Software on computer false reporting up to date
  122. /boot inside /root with full encryption (LVM on LUKS) on UEFI PC: grub cmd when booti
  123. Verification of chained CA certificates fail
  124. [SOLVED] Hacker Trouble
  125. [ubuntu] sssd - certificate_verification not working
  126. Security package update
  127. 18.10, gnome-disks, and veracrypt
  128. apt using strange ip address - DNS hijacking?
  129. [ubuntu] How do I block IP traffics using iptables?
  130. Dual Boot Encryption Issue
  131. Overthewire - bandit 16 --> 1
  132. [ubuntu] Calculator software update.... why does it require an update to OpenLDAP?
  133. AppArmor with net_bind_service capability
  134. DoT (DNS Over TLS) support in systemd-resolved
  135. mount / read only
  136. Have I been hacked/virus?
  137. [ubuntu] Securely expose machine to the internet (for someone familiar with ubuntu)
  138. [ubuntu] Encrypted USB in Ubuntu 16.04 cannot be accessed in another laptop
  139. [ubuntu] How safe is cryFS?
  140. [ubuntu] What is my .Private folder and why is it full of encrypted files?!
  141. [ubuntu] /etc/ssh/sshd_config "AllowUsers" issue...
  142. Blocking unwanted websites and domains
  143. ifconfig deprecated?
  144. [ubuntu] Ubuntu package site not working
  145. [ubuntu] Add SDA5 Crypt To Boot
  146. Samba OpenLDAP and Landscape
  147. [SOLVED] Puzzled about ufw
  148. Audio clicking like a mouse click.
  149. [ubuntu] Issues preventing root login via SSH
  150. Where is browsing history located?
  151. [ubuntu] Isn't the lack of https in the repositories a security risk?
  152. [ubuntu] Virus/malware through chrome browser affecting Ubuntu SYSTEM itself?
  153. Short passcode ONLY for lock screen
  154. USB token or on screen keyboard at decrypt screen.
  155. [ubuntu] Best Practice for Protection of backups against ransomware 2019 ????
  156. Help with iptables and tor
  157. .ssh and .gnupg
  158. [server] How do I configure fail2ban for webmin-auth? on Ubuntu Server 18.04
  159. [SOLVED] Hacked through Youtube? Printer port vulnerabilities and access
  160. [ubuntu] Symlinking system files in a chroot jail - bad idea?
  161. [SOLVED] Unfreeze SSD in Ubuntu Live for hdpram --security-erase-enhanced?
  162. Ubuntu 18.04 Mod Security: Does core ruleset update with normal ubuntu updates
  163. Password-protect a folder
  164. Better solution to encrypting & auto-mounting secondary drive?
  165. How to securely edit files on the server using FileZilla
  166. Ubuntu update problem
  167. [ubuntu] Antivirus for ubuntu
  168. [ubuntu] Monitoring Users Real Time w/ Reporting and Logging
  169. weird file in .cache
  170. trace the executing script
  171. testdisk
  172. [ubuntu] Ubuntu 18.04 trojan warning
  173. Use my backup in a virtual environment
  174. [SOLVED] Just to ask if this is valid? Longish post sorry.
  175. [server] WATCHBOG virus
  176. [ubuntu] clamtk erroring out
  177. Lubuntu 14.04 starts with any password
  178. [lubuntu] Install and Enable DNSCrypt Proxy 2
  179. Do new security fixes introduced in latest Linux Kernels get Backported to LTS Kernel
  180. [ubuntu] Is there no MariaDB Apparmor profile anymore?
  181. What are some of the recommended techniques to audit our system?
  182. Snaps and apparmor prevents access to hidden folders in home dir
  183. Telegram Channel Data Feed RSS Ubuntu
  184. Can't access AD Domain User - with AUTOLOGIN ubuntu 16.04
  185. [ubuntu] Rkhunter error messages on a fresh installation of Linux.
  186. Ubuntu 18.04.1 LTS updates with livepatch
  187. [SOLVED] Help with cryptsetup
  188. Server refused our key - Keyfile authentification from anther user than root
  189. Ubuntu 18.04 LTS "Bionic Beaver" Auto Updates Not Working
  190. XRDP failes authentication via xRDP
  191. LUKS: Update key using hash only?
  192. How can I to do without to install the operating system?(encrypt the disk)
  193. Ubuntu not affected by viruses
  194. Ubuntu LIVE USB problem
  195. Attempted hack
  196. [ubuntu] How to export ssh gpg keys from launchpad to my local computer?
  197. Freeradius filter-ID
  198. OpenVPN connects, but no internet (only when the server is using a specific NIC)
  199. gmx cross site attack
  200. sysctl not sticking after reboot
  201. [xubuntu] Ubuntu Has full access to your Google Account
  202. If a script is login shell is there any way for the user to get a real shell?
  203. A couple of dodgy links on the stickies?
  204. How to secure Ubuntu or distros in general?
  205. [ubuntu] Deploying CA certificate on Ubuntu nodes
  206. [server] Port forwarding
  207. which spectre/meltdown software mitigations are enabled on newest intel processors?
  208. Using A Wired Connection For Security With Wi-Fi Enabled
  209. Increasing Security By Modifying Default Content Settings in Google Chrome
  210. [SOLVED] How to Become a Regular User Again After Getting Gaining Superuser Privileges
  211. [server] 16.04: fail2ban says IP is already banned, but it's not
  212. What can a rogue device realistically do on your network?
  213. verifying installed updates
  214. HP bios upgrade initiated on dualboot without running Windows
  215. Clamtk signatures upate problem
  216. Create AppArmor profile from existing (dmesg) log
  217. conection to a vpn
  218. Possible Virus
  219. files in .gnupg
  220. UFW in Rules on specific interface
  221. General Security Question - Bitcoins Accounts & Trading - Using Ubuntu Live CD
  222. UFW blocking outgoing MAC address to Korean co. What's up with this?
  223. [ubuntu] Need help interpreting chkrootkit and rkhunter output log
  224. [ubuntu] Understanding Apparmor and Auditd
  225. [SOLVED] Ubuntu Security
  226. VPN ON/OFF Menu Toggle - I need Help Please
  227. [SOLVED] iptables OUTPUT firewall for mail server?
  228. Desktop management for ubuntu
  229. Android apk testing using Mobisec
  230. Weird: avahi-daemon asking for Disk password
  231. [ubuntu] fail2ban config to block attacks on magento payflow endpoint
  232. Denied TCP Connections
  233. [kubuntu] Cyberghost VPN on Kubuntu
  234. CVE-2019-0211 Apache HTTP Server privilege escalation from modules' scripts
  235. How should Facebook be handled on Ubuntu 18.10?
  236. 18.04.2 LTS hack
  237. [ubuntu] SASL authentication needed
  238. [ubuntu] Cannot connect VPN type L2TP over IPSec
  239. [ubuntu] Ubuntu 18.04
  240. Got hacked
  241. Unknown files in 18.04.2 LTS
  242. Software/OS spying and hardware spying. How to deal with both of them?
  243. [SOLVED] Chrome seems to default to Bing
  244. How to get AppArmor to work in ubuntu?
  245. LUKS Bluetooth keyboard
  246. ip6tables - Configuration
  247. lock skype or other apps
  248. [lubuntu] how to convert iptables command line to Ufw Command line
  249. [ubuntu] Can a new installation of ubuntu be hacked? Does encryption provide any security?
  250. [SOLVED] Prevent using router dns