Configure postfix to relay all email via a selected server Edit your /etc/postfix/main.cf file if you have a line starting with smtp_tls_security_level = (something) insert a # at the begining of that line. Then add the following lines to the … Continue reading →
You need to install Dell Open Manage. Then you will have the utility racadm. To reset the existing certificate on a DRAC card to a self signed certificate racadm -r 10.5.9.7 -u DRACUsername -p ‘DRACPAssword’ sslresetcfg racadm -r 10.5.9.7 -u … Continue reading →
I have a Comcast cable modem that is providing a IPv6 address that my Juniper SRX300 is binding to its outside interface. From the SRX I can successfully ping and ssh to various IPv6 devices on the Internet. Unfortunately I … Continue reading →
I have a desktop machine that keeps going into suspend. I want this machine to never go into suspend. First execute this systemctl status sleep.target suspend.target hibernate.target hybrid-sleep.target You will get four answers – look for the entries “Loaded: loaded” … Continue reading →
curl -vvI -k https://target.web.site The above allows you to view the certificate on the selected web site (including self signed certificates) openssl x509 -in certificate.crt -text -noout The above allows you to read the certificate on the web server
Continue reading →I found the best way to handle the certificate on a self hosted unifi controller was to switch to Lets Encrypt. Now, my unifi controller is behind a firewall, so we have to enable the DNS Challenge. We do this … Continue reading →
Sometimes when running a script as root, you need to execute a mysql command. To get around the problem created by the password – execute the following command one time: mysql_config_editor set –login-path=client –host=localhost –user=root –password Fill in the password … Continue reading →
There is a bug in some versions of snmp that cause the message systemstats_linux: unexpected header length in /proc/net/snmp. 237 != 224 to be posted to the logs. It is not an indication of a real problem. To prevent it … Continue reading →
There are two main standards for power cables in the US, NEMA (National Electrical Manufacturers Association) and IEC (International Electrotechnical Commission). The following is a cross reference for some of the most common ones in use today. Nema … Continue reading →
Create a firewall filter to log and accept any packets that match the server’s IP address as the destination-address. set firewall filter SYSLOG_FILTER term SYSLOG_PACKETS from destination-address 192.0.2.5/32 set firewall filter SYSLOG_FILTER term SYSLOG_PACKETS from destination-port 514 set firewall … Continue reading →