Wiki for home user connecting with ISP who blocks the port 80

Question

I setup a Standalone Wiki at home with a connection to an internet router but the ISP blocks the default port 80. I'm not experienced in Advanced Server mode and wants to get it done in server preference instead of Server Admin.
I did a risky procedure by run the Admin server to tweak the Web service - change the port from 80 to 16080. And managed the users sometimes in workgroup Manager and sometimes in Server preference ->groups. It runs well in the first days but then I restart the server I found, "Not Found
404: No group with that name (mac) hosted on this server" error.
the folders were still there but the server reports this error. I attempt to delete and add in Server preference for another group but in vain. the user blog is prefect. you can try http://khszeto.dyndns.org:16080/users/
username: mac1 password: mac1
What I want is getting my old wiki group back and I can create new group.

Answer 1

It's likely Server Admin being referenced.
You can change the port using the Apache configuration (text) files and setting up a virtual host on an alternate port, or you can use Server Admin to set this up for you. The Apache files are pretty clear around how to do this, and SA is itself pretty easy.
I'd probably not use a direct connection into the Apache port (16000 + the "real" Apache port) for web access (when the performance cache is enabled) as the base reply here has used, I'd tend to stick to the designated port. I'd tend to use one of the "traditional" alternate ports for the web server. These can be 81, 8080 or 8000. There's no tweak for 16080, as that port is part of how Apache works when the performance cache is enabled on port 80.
The other aspect here is usually dynamic DNS, as most folks that are seeking this lack static IP address, and the lack of a static IP makes dynamic DNS a requirement for in-bound access. The IP addresses on some ISPs can shift fairly frequently. This was mentioned earlier.
And FWIW, Mac OS X Server generally wants a static IP address.
I'll leave you to deal with the terms and conditions and requirements for your ISP. Some will explicitly disallow server access. Many will monitor network traffic. Most want you to purchase static IP and related.