Lets say I have the following security policies set security policies from-zone CAMERAS to-zone INTERNET policy CAMERAS-to-INTERNET match source-address any set security policies from-zone CAMERAS to-zone INTERNET policy CAMERAS-to-INTERNET match destination-address any set security policies from-zone CAMERAS to-zone INTERNET policy … Continue reading →
You ssh to some remote system (usually across the internet) step away from your keyboard for a few minutes, and the session gets dropped. The problem may be resolved by sending more keep alive packets You can fix this by … Continue reading →
IPv6 – 128 bits = 340 undecillion addresses IPv4 32 bit = 4 billion addresses
Continue reading →Allow systems with selected ip addresses to relay email through Zimbra without needing authentication There are two ways to set and check this Global – applied to all servers set zmprov mcf zimbraMtaMyNetworks “10.1.1.0/24 [fe80::5054::]/64 127.0.0.0/8 [::1]/128” check zmprov gcf … Continue reading →
If you are dork like me and like to see what is going on when your linux system boots (rather than a swirling circle) Excute sed s/rhgb//g -i.backup /etc/default/grub grub2-mkconfig -o /boot/grub2/grub.cfg and reboot Tested on Rocky 8
Continue reading →Installed a new dell server with iDRAC8 assigned a ip address to the iDRAC using the BIOS/Console interface Attempt to connect via https://drac.mydomain.com returns a web page with Access Error: 400 — Bad Request but you can connect via https://drac.ip.addr.ess … Continue reading →
Use nagios to flag major and minor alarms in Juniper equipment. These are events that will illuminate the red and yellow alarm leds on the front of Juniper equipment Insert the following into your /etc/nagios/commands.cfg file define command { command_name … Continue reading →
I wanted to make sure the certificate was working correctly on my mail servers. After a bit of digging around I found the following: Create a file named /usr/lib64/nagios/plugins/check_mail_ssl #!/bin/bash ## Usage example: ./check_ssl_cert_expiry -h -p -w 90 -c 60 … Continue reading →
How to search sent/received e-mails from a particular email id through command line(CLI) Solution If you have a multi-server installation – do this on the logging server Search for up to 1000 emails UserA@example.com has from UserB@example.com $ zmmailbox … Continue reading →
I have a file like the following this thing that thing this stuff that stuff I want it to read this thing that thing this stuff that stuff To fix it cat file.txt | sed ‘N;s/\nthat/ that/g’
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