Adding firewall rules to ESXi 5.5


I needed to add a custom firewall rule to my ESXi box, so that it could send email notifications.

Firstly, I created an smtp.xml file (see below) and this is stored on one of my datastores (in my case /vmfs/volumes/datastore2/hp/).

To make this persistent across reboots add the following lines to:

cp /vmfs/volumes/datastore2/hp/smtp.xml /etc/vmware/firewall/
chmod 444 /etc/vmware/firewall/smtp.xml
esxcli network firewall refresh

Content of smtp.xml:

To add a cron job see this post