siege [error] socket: unable to connect sock.c:282: Connection refused

Published on February 7th 2024 - Listed in Linux Nginx Apache Security - 0 comments

Cannot open file for writing error while trying to edit a file in /tmp (even as root user)

Published on September 6th 2023 - Listed in Linux Security - 0 comments

How to disable (turn off) LED illuminator lights on Dahua IP surveillance camera

Published on August 25th 2023 - Listed in Hardware Security Network Surveillance - 0 comments

How to renew expired zoneminder repository key (public key is not available: NO_PUBKEY A8C670C86F88B031)

Published on June 14th 2023 - Listed in Linux Surveillance Zoneminder Security - 0 comments

SSH connection not working (userauth_pubkey: key type ssh-rsa not in Pubkey Accepted Algorithms [preauth])

Published on May 16th 2023 - last updated on May 16th 2023 - Listed in Linux Ubuntu Security - 0 comments

Unexpected APT error when trying to enable Ubuntu Pro (ESM) service

Published on May 11th 2023 - Listed in Linux Ubuntu Security SSL TLS - 0 comments

Workaround for negated (exception) iptables rules with multiple sources or destinations

Published on January 30th 2023 - Listed in Network Linux Security - 0 comments

How to solve Citrix Workspace SSL error (You have not chosen to trust...) caused by missing Root CA certificates

Published on December 19th 2022 - last updated on December 20th 2022 - Listed in Linux SSL TLS Security Virtualization - 0 comments

How to manually update the security feeds in GVM (Greenbone Vulnerability Management)

Published on November 29th 2022 - last updated on February 27th 2023 - Listed in Security Linux - 4 comments

How to block a client IP address or range in Cloudflare

Published on November 9th 2022 - Listed in Cloud Security Internet Network - 0 comments

Wordpress (Japanese SEO) hack extracting and executing code from uploaded ZIP file

Published on August 26th 2022 - Listed in Security Wordpress PHP Hacks - 0 comments

Postfix rejects all incoming e-mails with message: blocked using; Error: open resolver

Published on August 4th 2022 - last updated on August 11th 2022 - Listed in Mail Internet Security Linux - 2 comments

Error: OID not increasing when parsing SNMP output of Checkpoint VSX

Published on July 15th 2022 - Listed in Linux Security Monitoring - 0 comments

Cloudflare: How to show a maintenance page but continue traffic to origin server from whitelisted IPs

Published on July 14th 2022 - Listed in Cloud Security Internet - 0 comments

Cloudflare managed WAF rule blocks Confluence page edit close request (doeditpage.action)

Published on June 22nd 2022 - Listed in Atlassian Security Internet Cloud - 0 comments

How to detect and fix (mitigate) SSL/TLS renegotiation DOS vulnerability in Postfix

Published on June 20th 2022 - Listed in Mail Internet Security SSL TLS Linux - 0 comments

check_http and OpenSSL 1.1.1 - an evil combo due to backward incompatibility with older OpenSSL versions?

Published on March 17th 2022 - last updated on March 23rd 2022 - Listed in TLS SSL Security Monitoring Linux - 0 comments

How to add secure cookie flag on Jira (or any Apache Tomcat) server

Published on March 9th 2022 - Listed in Atlassian Tomcat Security TLS SSL - 0 comments

Handling validity check failed and empty client certificate chain errors in Elasticsearch

Published on March 1st 2022 - last updated on March 7th 2022 - Listed in Elasticsearch ELK Monitoring TLS SSL Security - 0 comments

Technical analysis of Wordpress hack with PHP script lock360.php as running process

Published on February 22nd 2022 - last updated on November 14th 2023 - Listed in PHP Security Linux Hacks Wordpress - 9 comments

New vulnerability exploits lead to mass hack attacks on multiple Wordpress installations

Published on February 18th 2022 - last updated on February 22nd 2022 - Listed in Security Wordpress Internet Hacks - 0 comments

Interface name change in SNMP output after Checkpoint upgrade (R80.30 to R81.10) leads to monitoring issues

Published on January 21st 2022 - Listed in Monitoring Security Network - 0 comments

How to enable missing secure cookie attribute in Roundcube webmail

Published on January 19th 2022 - Listed in Roundcube Cloud Mail Security - 0 comments

SNMP v3 authentication with SHA1 protocol not working after Checkpoint Gaia upgrade to R81.XX

Published on January 18th 2022 - last updated on May 2nd 2022 - Listed in Monitoring Security Network - 2 comments

How to remove a (alternative) domain from a Lets Encrypt (SAN) certificate using certbot

Published on January 17th 2022 - Listed in Security TLS Internet - 0 comments

Using Nginx and LUA script to mitigate against Log4Shell (CVE-2021-44228) vulnerability attacks

Published on December 12th 2021 - last updated on December 15th 2021 - Listed in Nginx Security Internet - 0 comments

Monitoring plugin check_smart 6.12.1 released: Security fix, NVMe perfdata fix, Erase_Fail_Count_Total

Published on December 10th 2021 - last updated on December 10th 2021 - Listed in Hardware Monitoring Security - 0 comments

How to use AWS command line (CLI) with Google Authenticator as virtual MFA device

Published on November 22nd 2021 - Listed in AWS Security Linux Cloud - 0 comments

Lets Encrypt Root CA expiry (server certificate verification failed): Make sure to remove DST Root CA X3!

Published on October 7th 2021 - Listed in Internet TLS Security SSL Linux - 8 comments

Nginx reverse proxy error: SSL alert number 40 while SSL handshaking to upstream server (SSL server name)

Published on August 30th 2021 - Listed in Nginx Security TLS - 6 comments

How to secure the Plesk Panel with a Lets Encrypt certificate (and solve port 8443 problem)

Published on August 24th 2021 - Listed in Internet TLS Security Cloud SSL - 0 comments

Nginx reverse proxy error: SSL alert number 47 while SSL handshaking to upstream

Published on July 14th 2021 - Listed in Nginx Security TLS - 0 comments

APT repository changes its Suite value from stable to oldstable: This must be accepted explicitly before updates for this repository can be applied

Published on July 6th 2021 - last updated on April 22nd 2022 - Listed in Linux Security - 0 comments

How to solve apt error server certificate verification failed

Published on June 4th 2021 - last updated on September 8th 2023 - Listed in Linux TLS Security - 1 comments

Monitoring plugin check_smart 6.9.1 released: Security fix in pseudo-device path

Published on April 8th 2021 - last updated on October 15th 2021 - Listed in Monitoring Hardware Security - 2 comments

After upgrading Linux Mint (Ubuntu), attachments in KeePass 2 do not open anymore: Access denied

Published on March 15th 2021 - Listed in Linux Security - 0 comments

Protect your Wordpress blog from brute force login attacks

Published on February 1st 2021 - last updated on February 2nd 2021 - Listed in Wordpress Security Hacks - 0 comments

Lets Encrypt certbot unable to issue certificate, missing command line (Please choose an account)

Published on January 6th 2021 - Listed in TLS SSL Security Linux - 2 comments

Fixing Perl script using LWP unable to connect to TLS 1.2 URL; failing with sslv3 alert handshake failure

Published on November 2nd 2020 - Listed in Perl Coding Security TLS - 0 comments

Monitoring expiration dates of all ssl/tls certificates in the chain (intermediate and root ca)

Published on June 10th 2020 - Listed in SSL TLS Linux Monitoring Internet Security - 0 comments

Running Harbor registry (Docker repository) behind reverse proxy and solve docker push errors

Published on May 5th 2020 - Listed in Docker Kubernetes Containers Security - 2 comments

How to detect Ghostcat AJP vulnerability (CVE-2020-1938) in Apache Tomcat

Published on April 2nd 2020 - Listed in Security Tomcat Linux Apache - 0 comments

Using ELK to collect Nginx logs and show TLS version and ciphers used by HTTP clients

Published on March 27th 2020 - last updated on September 30th 2020 - Listed in ELK Filebeat Nginx Internet TLS Security - 0 comments

How the X-Cache HTTP header information (HIT, MISS) was abused for targeted attacks on our systems

Published on March 13th 2020 - Listed in Security Internet Varnish Hacks - 4 comments

Windows 10 and Server 2016 clients block access to (Samba) shares with public guest account: Technical analysis and workaround for event 31017

Published on July 22nd 2019 - Listed in Windows Linux Security Samba - 4 comments

Local users becoming root using su without password authentication due to wrong PAM config

Published on July 4th 2019 - Listed in Linux Security - 1 comments

How we successfully deflected a layer 7 DDOS attack with Nginx and GeoIP

Published on June 27th 2019 - Listed in Nginx Internet Security - 0 comments

Debian Wheezy LXC container not running on Stretch host with Kernel 4.18 bpo anymore (a vsyscall story)

Published on May 13th 2019 - last updated on July 2nd 2021 - Listed in Linux LXC Security Containers - 0 comments

Letsencrypt certificate renewal behind http proxy fails with unexpected error: bad handshake

Published on March 18th 2019 - Listed in SSL TLS Security Internet OSSEC - 0 comments

How to manually clean up Zoneminder events (and respect archived events)

Published on December 14th 2018 - last updated on October 17th 2020 - Listed in Zoneminder Surveillance Linux Security - 4 comments

Ignore systemd log warning Failed to reset devices.list: Operation not permitted in OSSEC

Published on July 31st 2018 - Listed in Linux LXC OSSEC Security Systemd - 0 comments

Firmware-Upgrade of a Dahua IPC-HFW1320S network camera

Published on April 18th 2017 - Listed in Hardware Security Network Surveillance - 1 comments

Allow SSH access based on GeoIP country

Published on November 3rd 2016 - last updated on November 13th 2019 - Listed in Linux Security - 2 comments

Move an iptables firewall rule up the chain before a reject rule

Published on February 4th 2016 - last updated on May 7th 2021 - Listed in Linux Security Network - 0 comments

fatal: Access denied for user by PAM account configuration

Published on July 29th 2015 - Listed in Linux Security - 3 comments

Using Nagios check_smtp -S without SSLv3 (sslv3 alert handshake failure)

Published on October 21st 2014 - Listed in Nagios Monitoring Security Internet Mail - 0 comments

Network Intrusion Detection System with Suricata on Debian Wheezy

Published on October 8th 2014 - Listed in Security Linux Network - 2 comments

Joomla CMS hacks by using vulnerability in com_fabrik

Published on January 26th 2012 - Listed in Internet PHP Hacks Security - 4 comments

RSS feed

Blog Tags:

  AWS   Android   Ansible   Apache   Apple   Atlassian   BSD   Backup   Bash   Bluecoat   CMS   Chef   Cloud   Coding   Consul   Containers   CouchDB   DB   DNS   Database   Databases   Docker   ELK   Elasticsearch   Filebeat   FreeBSD   Galera   Git   GlusterFS   Grafana   Graphics   HAProxy   HTML   Hacks   Hardware   Icinga   Icingaweb   Icingaweb2   Influx   Internet   Java   KVM   Kibana   Kodi   Kubernetes   LVM   LXC   Linux   Logstash   Mac   Macintosh   Mail   MariaDB   Minio   MongoDB   Monitoring   Multimedia   MySQL   NFS   Nagios   Network   Nginx   OSSEC   OTRS   Office   PGSQL   PHP   Perl   Personal   PostgreSQL   Postgres   PowerDNS   Proxmox   Proxy   Python   Rancher   Rant   Redis   Roundcube   SSL   Samba   Seafile   Security   Shell   SmartOS   Solaris   Surveillance   Systemd   TLS   Tomcat   Ubuntu   Unix   VMWare   VMware   Varnish   Virtualization   Windows   Wireless   Wordpress   Wyse   ZFS   Zoneminder   

Update cookies preferences