I'm always a little concerned about using WebDAV services insecurely across HTTP. However, the Apple WebDAV client cannot use SSL ... until now. Just grab and install these two packages - OpenSSL and Stunnel. Both compile right up on Mac OS X, so just follow the instructions inside. After compiling, use the following Terminal command to start stunnel:
% /usr/local/sbin/stunnel -c -d :1999 -r server:443Replace server with the name of the system with the secure WebDAV service. Next, use the Connect to server command in the Finder and enter the following address:
http://127.0.0.1:1999/service_name/Replace service_name with the remainder of the WebDAV URL on the remote system.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020419091503624