I am working with a NFS server on Red Hat 7.3. For secure reason I want to
use IPCHAINS to restrict TCP/UDP ports. Now the question is that how many
ports should be opened for a NFS server? only port 111, port 635, and port
2049?
I recommend this strategy:
Allow access to the interface from trusted clients (the ones using NFS). Allow access to the specific ports you want to make available from 0/0. Deny everything else.
Illustrations of this type of setup in my own scripts: https://home.dragonsdawn.net/~gordon/firewalls/fw-config.test https://home.dragonsdawn.net/~gordon/firewalls/ez_ip_tables.init
... Just some neat stuff I'm playing with. I need to rename those scripts. ;)
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