Searched the forums, but not exactly same problem...

I have 3 concrete5 wesbites all hosted same LAMP server / 3 separate databases.
I am using dynamic DNS for each site and the first site works, but the other 2 resolve to the IP only (the port is not recognized). This is on my Synology NAS where I assign a port for each site which maps to a folder. So I show below the dynamic DNS URL, ip/port, ip/folder. They are all setup the same way but only the first one is working thru the dynamic DNS. However I added a fourth "Hello World" non-c5 site, and it works thru dynamic DNS, so there is some configuration in C5 I have incorrect. Odd thing if I use the ip/folder combination using the local ip to the NAS all 4 sites are working fine.

1)http://aaa.no-ip.org -->http://192.168.1.5:1111 ->http://192.168.1.5/aaa

2)http://bbb.no-ip.org -->http://192.168.1.5:2222 ->http://192.168.1.5/bbb

3)http://ccc.no-ip.org -->http://192.168.1.5:3333 ->http://192.168.1.5/ccc

4)http://helloworld.no-ip.org -->http://192.168.1.5:4444 ->http://192.168.1.5/helloworld

I'm guessing this is a simple setting, but I could use some help.

Thanks!