Fork us on GitHub Follow us on Facebook Follow us on Twitter

Version 4 (modified by Jakub Jermář, 7 years ago) (diff)

Update section on configuration.

Networking in HelenOS


HelenOS supports TCP/IP networking with IPv4. TCP, UDP, ICMP protocols are supported. Various real and emulated Ethernet network adapters can be used (see below). One usability limitation is that DNS name resolution and DHCP are not implemented yet.

Setting up real hardware

Make sure you have a supported network adapter, otherwise no special setup is necessary. Supported network adapters:

  • NE 2000 (ISA) - compatible
  • Intel PRO/1000 (1 Gbit)
  • Realtek RTL8139 (100 Mbit)

Setting up virtual hardware

Network configuration

As of now, network can be configure only manually using the inetcfg command.

Manual network configuration

Manual network configuration is quite easy. You can always check the current setting via the inetcfg command without arguments:

/ # inetcfg
Configured addresses: net/loopback v4a 1500
Static routes:

Now, let's assume you want to configure HelenOS to have address This is simply achieved by typing:

/ # inetcfg create net/eth1 myaddr

net/eth1 is one of the available links, in this case the first discovered network card. You may use the locinfo command to see what other links are there in the system. myaddr is a user-defined name given to the configured address. It is used to identify the address to other inetcfg commands.

You may also want to configure the default gateway for your networked HelenOS system. Provided the gateway is at, type:

/ # inetcfg add-sr default

Your HelenOS system is now configured for networking. Note that inetcfg understands also other commands that you can use to fix any potential problems with the configuration. To see the complete list, just type:

/ # inetcfg -h

Network services

Web server (websrv)

Telnet server (remcons)