1. Start the dialog for conguring network connections as described in Section 21.3,
“Conguring Network Connections” (page 380). Choose the connection you
want to modify and click Edit. If you are using GNOME, switch to the IPv4
Settings tab and from the Method drop-down list, choose Shared to other com-
puters. If you are using KDE, switch to the IP Address tab and from the Method
drop-down list, choose Shared. That will enable IP trafc forwarding and run a
DHCP server on the device. Conrm your changes in NetworkManager.
2. As the DCHP server uses port 67, make sure that it is not blocked by the rewall:
On the machine sharing the connections, start YaST and select Security and
Users > Firewall. Switch to the Allowed Services category. If DCHP Server is
not already shown as Allowed Service, select DCHP Server from Services to
Allow and click Add. Conrm your changes in YaST.
How to provide static DNS information with automatic (DHCP, PPP, VPN) addresses?
In case a DHCP server provides invalid DNS information (and/or routes), you can
override it. Start the dialog for conguring network connections as described in
Section 21.3, “Conguring Network Connections” (page 380). Choose the connection
you want to modify and click Edit. If you are using GNOME, switch to the IPv4
Settings tab, and from the Method drop-down list, choose Automatic (DHCP) ad-
dresses only. If you are using KDE, switch to the IP Address tab, and from the
Method drop-down list, choose Automatic (DHCP) addresses only. Enter the DNS
information in the DNS Servers and Search Domains elds. From the drop-down
list at the top of the tab, select Routes if you want to Ignore automatically obtained
routes. Conrm your changes.
How to make NetworkManager connect to password protected networks before a user
logs in?
Dene a system connection that can be used for such purposes. For more
information, refer to Section 21.7, “NetworkManager and Security” (page 391).
21.9 Troubleshooting
Connection problems can occur. Some common problems related to NetworkManager
include the applet not starting or a missing VPN option. Methods for resolving and
preventing these problems depend on the tool used.
394 Reference
