If SSL is enabled on your webserver, you should definitely use it to protect your wp-admin directory a bit more. Activating SSL on your WordPress blog is definitely easy. Just read one.
What is SSL? According to Wikipedia:
“SSL is a cryptographic protocol that provide security and data integrity for communications over TCP/IP networks such as the Internet. TLS and SSL encrypt the segments of network connections at the Transport Layer end-to-end.”
In other words, SSL can secure transactions over the internet.
Once you checked that your webserver can handle SSL, opne your wp-config.php file (Located at the root of your WordPress install) and paste the following:
Save the file, and you’re done!