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New upstream version 3.1.1

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billchenchina 2022-11-15 08:50:35 +08:00
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# Advanced Configuration
## Configuration Files
Read about [Configuration Files](ConfigurationFiles.md) as they might come in handy – especially, but not limited to, if edges or supernodes shall be run as a service (see below) or in case of bulk automated parameter generation for mass deployment.
## Running edge as a Service
edge can also be run as a service instead of cli:
1. Edit `/etc/n2n/edge.conf` with your custom options. See `/etc/n2n/edge.conf.sample`.
2. Start the service: `sudo systemctl start edge`
3. Optionally enable edge start on boot: `sudo systemctl enable edge`
You can run multiple edge service instances by creating `/etc/n2n/edge-instance1.conf` and
starting it with `sudo systemctl start edge@instance1`.
## Communities
You might be interested to learn some [details about Communities](Communities.md) and understand how to limit supernodes' services to only a specified set of communities.
## Federation
It is available a special community which provides interconnection between supernodes. Details about how it works and how you can use it are available in [Federation](Federation.md).
## Virtual Network Device Configuration
The [TAP Configuration Guide](TapConfiguration.md) contains hints on various settings that can be applied to the virtual network device, including IPv6 addresses as well as notes on MTU and on how to draw IP addresses from DHCP servers.
## Routing the Traffic
Reaching a remote network or tunneling all the internet traffic via n2n are two common tasks which require a proper routing setup. n2n supports routing needs providing options for packet forwarding (`-r`) including broadcasts (`-E`) as well as temporarily modifying the routing table (`-n`). Details can be found in the [Routing document](Routing.md).
## Traffic Restrictions
It is possible to drop or accept specific packet transmit over edge network interface by rules. Rules can be specify by (`-R rule_str`) multiple times. Details can be found in the [Traffic Restrictions](TrafficRestrictions.md).