November 2004
Intermediate to advanced
328 pages
8h 12m
English
book
Securing NFS in AIX An Introduction to NFS v4 in AIX 5L Version 5.3
by Chris Almond, Lutz Denefleh, Sridhar Murthy, Aniket Patel, John Trindle
Content preview from Securing NFS in AIX An Introduction to NFS v4 in AIX 5L Version 5.3
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Chapter 2. What’s new in NFS V4? 41
2.8.9 Restricting NFS port ranges
The NFS_PORT_RANGE environment variable may be used to limit the source
port of network calls that the client makes to the server. This is very useful in a
firewalled environment. Prior to the introduction of this feature, you had no control
over what source port AIX would use, making firewall maintenance a difficult
task. If used, this environment variable should be added to the /etc/environment
file. The syntax of the environment variable is:
NFS_PORT_RANGE=udp[<starting_port>-<ending_port>]:tcp[<starting_port>-\
<ending_port>]
In the following example, UDP packets sent by ...
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