Dropbear default
After installing and configuring dropbear to be included into a boot image it will start on the default ssh port of 22.
Changing the default
To start dropbear using a different port you need to edit one of the scripts included in the boot image. Append the line “/sbin/dropbear” with the “-p” flag and the port number you want to run it on.
/usr/share/initramfs-tools/scripts/init-premount/dropbear
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