[Freeipmi-devel] BMC and RSH/NIS conflict

[Anand Babu]

Remote-shell (rsh) and NIS connections to user-datagram-protocol (UDP)
port 623 and 664 will time out on the network interface used by the
BMC if LAN management is enabled on that interface.

To avoid timeouts, configure your services to block the use of UDP
ports 623 and 664, or use an alternate network interface for that
traffic.

Secure connections to BMC port 664 is not enabled on most BMC
implementations by default.

Thanks to Anand Manian (GE Power Systems) for reporting this problem.
=====================================================================
Solution: RESERVE RMCP PORTS THROUGH INETD
Some one please try this solution and report its correctness or
recommend a better solution:

Under Debian GNU/Linux:

Append the following to /etc/services:
# BMC IPMI/RMCP services
rmcp    623/udp         # Aux Bus Shunt (Primary RMCP Port)
rmcp    623/tcp         # Aux Bus Shunt (Primary RMCP Port)
rmcps   664/udp         # Secure Aux Bus (Secondary RMCP Port)
rmcps   664/tcp         # Secure Aux Bus (Secondary RMCP Port)

Append the following to /etc/inetd.conf
# BMC IPMI/RMCP services
rmcp    dgram   udp     wait    root    /bin/true
rmcp    stream  tcp     nowait  root    /bin/true
rmcps   dgram   udp     wait    root    /bin/true
rmcps   stream  tcp     nowait  root    /bin/true
=====================================================================

Redhat GNU/Linux users may have to configure xinetd service instead.

-- 
Anand Babu
Free as in Freedom <www.gnu.org>