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Weaknesses & mitigations for using NFS on Solaris

In one apps project, they requested to use NFS (Netw File Share)  on Solaris:
My concern is
a) unlike Windows which can have Windows firewall to restrict who can access the NFS share
    (ie endpoint firewall), Solaris are not known to have its own endpoint firewall
b) NFS traffic are not encrypted, correct?
c) NFS authentication is weak?  : Pls elaborate in what way?

What are the mitigations we can put in place if the apps team still wants it?
OS Security* vulnerabilitySecurity

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8/22/2022 - Mon

NFS was not very secure in version 2 and 3.  This is why it got a bad name.

NFSv4 has lots of security features, but they are not enabled by default:

- kerberos authentication allows for secure authentication and integration with AD
- nfsv4 traffic can optionally be encrypted
- nfs shares can be exported to a limited set of hosts
- nfsv4 allows ACLs.

NFSv4 can be a bit of a challenge to set up, but when done correctly it can be very secure.  However it is still recommended not to expose it directly to the internet but over a VPN if needed for remote sites.


>kerberos authentication allows for secure authentication and integration with AD
In our case, we're on Solaris, so it won't be AD integration: will it still use Kerberos authentication?

And with NFSv4, can we enable encryption for data in motion & data at rest??
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Can  "Data in Motion" ie when copying to/from  NFSv4 be encrypted?
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