The Helm Personal Server places few requirements on the network where it runs:
- Your network needs to provide DHCP.
- Your network must use a subnet that is not among those reserved for use by the Helm.
If you are using default settings on your modem/router, then it is unlikely that you need to change network configuration on it in order for the Helm to work. If the information in this article looks unfamiliar, then your network is likely already configured as needed.
The Helm uses CIDR blocks 10.8.0.0/16 (hosts 10.8.0.1 through 10.8.255.254) and 10.160.0.0/12 (hosts 10.160.0.1 through 10.175.255.254). This leaves the following available from among the blocks that are reserved by IANA for private networks:
| CIDR block | Host min | Host max |
|---|---|---|
| 10.0.0.0/13 | 10.0.0.1 | 10.7.255.254 |
| 10.10.0.0/15 | 10.10.0.1 | 10.11.255.254 |
| 10.12.0.0/14 | 10.12.0.1 | 10.15.255.254 |
| 10.16.0.0/12 | 10.16.0.1 | 10.31.255.254 |
| 10.32.0.0/11 | 10.32.0.1 | 10.63.255.254 |
| 10.64.0.0/10 | 10.64.0.1 | 10.127.255.254 |
| 10.128.0.0/11 | 10.128.0.1 | 10.159.255.254 |
| 10.176.0.0/12 | 10.176.0.1 | 10.191.255.254 |
| 10.192.0.0/10 | 10.192.0.1 | 10.255.255.254 |
| 172.16.0.0/16 | 172.16.0.1 | 172.16.255.254 |
| 172.20.0.0/16 | 172.20.0.1 | 172.20.255.254 |
| 172.24.0.0/13 | 172.24.0.1 | 172.31.255.254 |
| 192.168.0.0/16 | 192.168.0.1 | 192.168.255.254 |
The majority of home networking equipment uses 192.168.0.0/16 by default.
See also: Does the Helm require special firewall configuration?
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