Apache config options for url rewriting/redirects

[Mike Cunningham <mcunning@xxxxxxx>]

We currently run two web sites on our iSeries. One for students and one for employees. Both use the same url domain https://as400sec.pct.edu/SISaccess/ for students and https://as400sec.pct.edu/webapps/eswlogin.pgm/ for employees. We currently have some redirects setup on an IIS server so a user can use www.pct.edu/sis<http://www.pct.edu/sis> or www.pct.edu/eis<http://www.pct.edu/eis> to get to the correct page to logon. We would like to use sis.pct.edu and eis.pct.edu and send the initial connection to one the two logon pages. I have been reading up on url rewriting which led me to redirects and RedirectPermanent and 301 messages and even domain aliases. Anyone have any experience in doing this and have any thoughts as to which is the best option for what we want to do?  Ultimately I think we would want to use sis.pct.edu and eis.pct.edu as the domain in all the links in the two different applications but that would get into using multiple Verisign certificates and changing all our current links