Tom, I don't want to use ISA Server as a local firewall; but the fact is that my customer would prefer to continue to host an intranet web server on the same machine as ISA Server ; this Web server has to be accessible by anybody in the intranet, so there are no real need to protect it ; so, the question is no to know if it is recommended or not ; it is is just to know if it is possible or not, since I have some difficulties with this configuration ; to dig a little bit more, I have read your ISAServer 2004 book where I found some interesting informations ; It is why I asked (and I did not tested yet) if it should be necessary to publish this Web service hosted on the ISA machine, as I understood from your book (I don't remember the chapter) thanks in advance