A couple of RHEL5 books I'm reading at the moment suggest port numbers above 1024 for statd, lockd, mountd and rquotad (eg 38001-38006 or 32764-32767) when configuring NFS to work with a firewall.

The default /etc/sysconfig/nfs on CentOS5 however has defaults under 1024, such as

mountd  892
statd   662
rquotad 875

Is there something security-related going on here that I'm not aware of, or some other explanation? Neither text mentions the use of ports under 1024 at all.

Thanks
Mick
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