Date: Wed, 19 Dec 2018 01:05:59 +0000 From: Rick Macklem <rmacklem@uoguelph.ca> To: "freebsd-current@FreeBSD.org" <freebsd-current@FreeBSD.org> Subject: possible POLA violation for NFS server to make it Linux compatible Message-ID: <YTOPR01MB039500BCA166BE8D21E2C6E1DDBE0@YTOPR01MB0395.CANPRD01.PROD.OUTLOOK.COM>
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It was my understanding that the NFSv4 working group believed that the requirement for the NFSv4 client to use a priviledged port# (< 1024) should not exist. As such, I coded the server to ignore the vfs.nfsd.nfs_privport sysctl and allow the mount for NFSv4. PR#234106 has reported this as a compatibility issue w.r.t. the Linux NFS server. The change to make the FreeBSD NFSv4 server use vfs.nfsd.nfs_privport is trivial and I think being compatible with Linux is important (I see it as the defacto standard NFS implementation these days). However, I am concerned that this change will result in a slight POLA violation for sites with vfs.nfsd.nfs_privport set, but doing NFSv4 mounts that might now fail. What do others think I should do? rickhelp
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