Required ports

Help! (Home for newbies)
1

I have my virtualmin server running behind a DSL Gateway/Firewall. I have gotten it running pretty well, but to do so I had to open up all of the ports on it to outside traffic, which I know is a no-no. Is there are reference anywhere, or can anyone provide me with any advice on what ports need to be open for what services?

Thanks.

2

web is 80
ssl is 443
webmin 10000
usermin 20000
ftp 21
ssh 22

those are the basic ones.

if you are at home behind a NAT, usually you can DMZ the IP for your server. In other words, open all for the servers IP and let the servers firewall do the rest.