Add SPF records
This section defines HOWTO configure a Sender Policy Framework (SPF) record for a domain and its mail servers. Briefly the design intent of the SPF …
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How can I secure / increase the security of SSH?
There are a few adjustments that can and should be made to the default SSHD configuration to increase security. Traditionally, this has been especially true …
Change computer name so that it shows correctly on server
This is configured with the ‘hostname’ option in /etc/sysconfig/network. Update that file and either reboot or run hostname <mynewhostname> Your current shell will not change …
How Can I Change the Port SSH Listens On?
To change which port ssh listens on, you just need to edit the sshd_config file. The default directory for ssh configuration is /etc/ssh. First, backup …
Can I Limit the IP(s) that sshd Listens On?
To limit the IP addresses which sshd listens on, you just need to modify its settings within the sshd_config file. Follow these 4 easy steps: …
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