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Signed-off-by: DL6ER <dl6er@dl6er.de>
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DL6ER
2021-01-04 11:10:55 +01:00
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@@ -136,19 +136,21 @@ If the server is behind a device, e.g., a router that is doing NAT, be sure to f
??? info "NAT: Network address translation"
Network address translation modifies network packages. Incoming connection requests have their destination address rewritten to a different one.
NAT involves more than just changing the IP addresses. For instance, when mapping address `1.2.3.4` to `5.6.7.8`, there is no need to add a rule to do the reverse translation. A `netfilter` system called `conntrack` recognizes packets that are replies to an existing connection. Each connection has its own NAT state attached to it. Reverse translation is done automatically.
NAT involves more than just changing the IP addresses. For instance, when mapping address `1.2.3.4` to `5.6.7.8`, there is no need to add a rule to do the reverse translation. A `netfilter` system called `conntrack` recognizes packets that are replies to an existing connection. Each connection has its own NAT state attached to it. The reverse translation is done automatically.
## Set up a domain name for your router
When connecting from outside your network, you'll need to know the public IP address of your router to connect. However, as most households are getting dynamically-assigned public IP addresses (these addresses change periodically), you need to note down the address every day before leaving the house. Since this is obviously *very* uncomfortable, we strongly suggest registering a *dynamic host record* (often called "[DynDNS](https://en.wikipedia.org/wiki/Dynamic_DNS)" record).
When connecting from outside your network, you'll need to know the public IP address of your router to connect. However, as most households are getting dynamically-assigned public IP addresses (these addresses change periodically), you need to note down the address every day before leaving the house. Since this is *very* uncomfortable, we strongly suggest registering a *dynamic host record* (often called "[DynDNS](https://en.wikipedia.org/wiki/Dynamic_DNS)" record).
There are many excellent guide and a lot of services offer this for free (with more or less comfort). We suggest a few providers below, however, this list is neither absolute nor exhaustive:
The public IP address is checked at regular intervals. As soon as it changes, the router (or a DynDNS tool) sends a corresponding message to a URL of the service provider, who then updates the record.
There are many excellent guides and a lot of services offer this for free (with more or less comfort). We suggest a few providers below, however, this list is neither absolute nor exhaustive:
<!-- markdownlint-disable code-block-style -->
??? info "DynDNS providers"
- [Strato.de](https://www.strato.de/hosting/dynamic-dns-free/) (Guides: [EN](https://www.strato.com/faq/en_us/domain/this-is-how-easy-it-is-to-set-up-dyndns-for-your-domains/) / [DE](https://www.strato.de/faq/domains/so-einfach-richten-sie-dyndns-fuer-ihre-domains-ein/))
If you already have a hosting package at Strato, you can easily set up a subdomain to be used as DynDNS record. This is entirely free for members.
If you already have a hosting package at Strato, you can easily set up a subdomain to be used as a DynDNS record. This is entirely free for members.
- [DNSHome.de](https://DNSHome.de)