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Status Future consideration
Workspace z/OS
Categories Network File System (NFS)
Created by Guest
Created on Mar 15, 2018

RELATED IDEAS

Request to remove the portmap dump call from z/OS NFS

Portmap dump calls are now identified as threats by standard firewall rules and other platform NFS clients have removed portmap dump calls. z/OS NFS should also provide a configuration option to disable portmap dump calls to prevent firewalls from blocking NFS traffic due to portmap dump calls being identified as threats.

It appears that other platforms removed the need for the portmap call perhaps because all traffic goe thru port 2049. The z/OS NFS server unfortunately, still requires the portmap dump. There is currently no paramater that you can set to change this behavior.

Idea priority Medium
  • Guest
    Reply
    |     Dec 20, 2023

    Additionally the Z NFS Client needs this ability when doing a Version 4 NFS mount command, as this is not part of the Version 4 NFS standard.

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