James Pifer wrote:
Hi. I have a server in our DMZ and I'm exporting a specific directory
with NFS. I have an internal server that I want to mount it on. The
internal server is allowed through the firewall without restriction.
Firewall guy tells me it's wide open for this internal server, TCP and
UDP.
When I try to mount the drive I get this error:
pmap_getmaps rpc problem: RPC: Unable to receive; errno = Connection
reset by peer
On the server running NFS I get this:
rpc.mountd: authenticated mount request from [internal_server]:680
for /usr/test (/usr/test)
If I do an nmap from the internal server to the external server running
I get:
(The 1648 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
111/tcp open rpcbind
443/tcp open https
933/tcp open unknown
5001/tcp open commplex-link
5801/tcp open vnc-http-1
5901/tcp open vnc-1
10000/tcp open snet-sensor-mgmt
A UDP port scan seems to hang.
If I do an rpcinfo on the external server running NFS I get:
# rpcinfo -p 127.0.0.1
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 32768 status
100024 1 tcp 32768 status
391002 2 tcp 32769 sgi_fam
100011 1 udp 930 rquotad
100011 2 udp 930 rquotad
100011 1 tcp 933 rquotad
100011 2 tcp 933 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100021 1 udp 32781 nlockmgr
100021 3 udp 32781 nlockmgr
100021 4 udp 32781 nlockmgr
100005 1 udp 32782 mountd
100005 1 tcp 59483 mountd
100005 2 udp 32782 mountd
100005 2 tcp 59483 mountd
100005 3 udp 32782 mountd
100005 3 tcp 59483 mountd
Any thoughts on what the problem is?
Thanks,
James
Check that all firewalls have been setup to allow UDP. It looks as though TCP is
being allowed, but UDP is being blocked.
What version of the kernel are you running on the server? It's only registering
NFS vers 2&3 over UDP, not TCP.
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@xxxxxxxxxxxx
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
