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Postfix – DNSBL Providers

The complete IP check for sending Mailservers DNSBL (DNS BlackList aka RBL) lookup and FCrDNS (Forward Confirmed reverse DNS aka iprev) check tool. valli: http://multirbl.valli.org To be removed from barracudacentral blacklist please…
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CISCO ASA LDAP AAA Error ‘AAA Server has been removed’

Problem: Attempting to test AAA authentication via LDAP to a Windows domain Controller. Authentication test to host {IP-Address} failed. Following error occurred – ERROR: Authentication Server not responding: AAA Server has been removed Solution: This…
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MySQL – How to Back Up and Restore a Database

Declarations Database: [dbname] User: [uname] Password: [pass] Back up Back up a dedicated database from the Command Line: [crayon-6990bbc748605843267808/] Back up all the databases: [crayon-6990bbc74860d642210692/] Back up with…

ZFS – Replacing a dead disk in a zpool

ZFS – Single Path 1. Check zpool status: zpool status vol -x 2. Find the {GUID} of the {dead-disk} within zdb: zdb -l /dev/{dead-disk} 3. Offline the the {dead-disk} within zdb: zpool offline vol /dev/disk/by-id/{dead-disk} 4. Detach…
Internet Systems Consortium

BIND – Response Policy Zones (RPZ)

ISC Webinars: https://www.isc.org/mission/webinars ISC Webinar on RPZ: https://www.isc.org/wp-content/uploads/2017/12/RPZ-webinar7.ppt.pdf Security Zones - Rackspace Case Study: http://www.securityzones.net/images/downloads/Rackspace-RPZ-Case-Study.pdf Free…
sipgate

CISCO CUBE SipGate

1. Cisco Unified Border Element with Support for Multi-VRF Cisco Unified Border Element Configuration Guide 2. SIPGATE To let you CUBE register with SIPGATE for incoming calls, you need to ensure that the sip-ua, retry invite is 2 else…

Debian – How to delete broken packages

1. remove broken packages [crayon-6990bbc748b39562300431/] 2. after removing package update your system [crayon-6990bbc748b41986396767/] 3. re-install the package [crayon-6990bbc748b44902585789/]

Ubuntu – How to fix broken packages

1. fix broken packages [crayon-6990bbc748cfd889163235/] 2. cleanup 1st [crayon-6990bbc748d04231284687/] 3. cleanup 2nd [crayon-6990bbc748d07292824501/] 4. Package Manager [crayon-6990bbc748d0a904760669/]
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WordPress – auto-update via proxy

Here a brief config snipped to allow Wordpress to use a http proxy server for updates enforce ssh enable auto-upgrade for WP core, plugins and themes [crayon-6990bbc748ebc459333368/]