Re: [opensuse] nfs server /require/ reverse DNS lookup working?!

John Andersen 写道:
On Sunday 08 April 2007, Zhang Weiwu wrote:


Apr 9 15:46:47 joe mountd[17301]: refused mount request from
218.193.55.201 for /home (/): not exported Apr 9 15:46:57 joe
mountd[17301]: can't get hostname of 218.193.55.201

This is the first time I see mount failed because reverse DNS lookup
failed. My dumb questions are:

1. If reverse lookup had been a must, why I hadn't have this problem
with Linux clients?
2. Can I turn off reverse lookup on the DNS server? It's impossible
for me to set up reverse lookup because client is not in the
network managed by me and I don't see how reverse lookup offered
better security: because I only export read-only shares!


Looks to me like windows was trying to mount /home instead
of '/home/packman' and that is what it is complaining about.

I thought the same but later I read this article
http://support.microsoft.com/kb/926095
Seems MS is aware of this.
Did you try to add 218.193.55.201 to hosts file?
Why? But anyway I added this line to my /etc/hosts
218.193.55.201 abcdefg

strange, after I added this line to /etc/hosts there is no longer error
message in /var/log/messages. But still Windows client cannot connect.
Some times, the Windows client ask for a username and password, because
this is anonymous share I don't know what to fill in, typed several
username like 'guest' 'anonymous' and finally some real username and
password: no access. Press "ESC" to get rid of login dialog, trying
connect to NFS share again got "Network Path Not Found" error from
Windows client. During all these, no error messages produced in
/var/log/messages.

If the MS KB article had been right, that "Some NFS servers require
valid PTR records as part of the security mechanism." Then why all other
Linux hosts in the same local network (e.g. 218.193.55.200,
218.193.55.202...) mounts just fine?
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