HP XC System Software Administration Guide Version 3.1

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Table 11-2 Service Ports

CommentsProtocolPort NumberInternal or ExternalService

The highest port number

used is based on the

number of modules

configured to udpcast.

Usually, the upper limit is

9020.

udp

9000 to 9020InternalFlamethrower

Only if the HP XC system

is set up as a member of a

larger LSF cluster. See

“Installing LSF-HPC with

SLURM into an Existing

Standard LSF Cluster ”

(page 251) for more

information

tcp/udp

6878 to 6879, 6881 to

6883

ExternalLSF

See also mondtcp

2710InternalSupermon

tcp

214Internalsyslog_ng

udp

514Internalsyslog

tcp/udp

523InternalSystemImager

To verify the actual current ports open on any node, use the iptables --list -n -v command.

11.2 Opening Ports in the Firewall

CAUTION: Opening an IP port can constitute a breach of security. Use the following information with

care.

You can open a port in the firewall on any node by using the openipport command; however, that port

opening specification is overwritten when the node is reimaged. The exception is the head node, which

as the golden client, is not reimaged. This command is described in “Opening a Temporary Port in the

Firewall” (page 144).

Alternatively, you can open an IP port in the firewall globally on all the nodes by updating a single file;

the port remains open after the nodes are reimaged. For more information, see “Opening an IP Port in the

Firewall Persistently” (page 145).

11.2.1 Opening a Temporary Port in the Firewall

The openipport command enables the superuser to open an IP service port in the firewall using the

following information:

• The port number to open

• The protocol to be used

• The list of interfaces on which the port is to be opened

144 Opening an IP Port in the Firewall