Changes

=Domain, Domain name server (DNS) and DynDNS=

=Domain, Domain name server (DNS) and DynDNS=

Wikipedia[https://fr.wikipedia.org/wiki/Domain_Name_System]

Wikipedia[https://fr.wikipedia.org/wiki/Domain_Name_System]:

A DNS is important when you want to reach your server from internet because you don't want to learn your IP by heart, you'd rather buy a domain like mycompany.org and use it to reach your server

A DNS is important when you want to reach your server from internet because you don't want to learn your IP by heart, you'd rather buy a domain like mycompany.org and use it to reach your server.

1. When you own a domain you also own all the sub-domaine like www.mycompany.org, erp.mycompany.org, yyy.xxx.mycompany.org ...; you can map this domian and its sub.domain to either an IP, another domain usually with the company that sold you the domain ( there is other type of DNS record but we won't mention them here)

# When you own a domain, you also own all the sub-domain like www.mycompany.org, erp.mycompany.org, yyy.xxx.mycompany.org ...; you can map this domain and its sub.domain to either an IP or another domain usually with the company that sold you the domain (there is other type of DNS record but we won't mention them here).

2.in order to link you domain to an IP, you'll need an A DNS record for a V4 IP address or an AAA DNS record for a IP V6 address; in case you don't own a fixed IP you can use a  Dynamic DNS[https://en.wikipedia.org/wiki/Dynamic_DNS] service: there is a daemon runing on your network that will keep updating your IP in the DNS ( usually the internet modem/gateway have this funciton)

# In order to link you domain to an IP, you'll need an A DNS record for a IPv4 address or an AAA DNS record for a IPv6 address; in case you don't own a fixed IP you can use a  Dynamic DNS[https://en.wikipedia.org/wiki/Dynamic_DNS] service: there is a daemon runing on your network that will keep updating your IP in the DNS (usually the internet modem/gateway have this funciton).

3. in order to link your domain to another domain, you will need to setup a NAME DNS record (e.g. to the domain with an A record)

# In order to link your domain to another domain, you will need to setup a NAME DNS record (e.g. to the domain with an A record).

=Port Forwarding, DMZ and Reverse Proxy=

=Port Forwarding, DMZ and Reverse Proxy=