Thanks for your reply~ I think my problem could be is how to create the iptables that could let the NFS server access into the host system. The guest system is CentOS 5.3 i386 . The ip address is 192.168.56.101 with the eth0 interface And the host system is CentOS 5.4 x86_64, its ip address is 192.168.7.67 and its route information is the following : root at xxx: route -n 192.168.7.0 xx xx xx eth0 192.168.56.0 xx xx xxx vboxnet0 I run this iptable rule in the guest system which configured the NFS server, iptables -A INPUT -i eth0 tcp -s 192.168.7.67 --dport 111 -j ACCEPT Then : when I run "showmount -e 192.168.56.101" and the directory appears, but run the "mount -t nfs 192.168.56.101:/xxx /media" in the terminal , the output is still that message: "mount : 192.168.56.101:/xx failed , reason given by server:Permission denied" So is it my iptables rule wrong? Or how to write the correct the rule ? Thanks in advance~. On Mon, Apr 26, 2010 at 12:16 PM, onay <ronald.santosa at gmail.com> wrote: > On Mon, Apr 26, 2010 at 10:15 AM, sync <jiannma at gmail.com> wrote: > > Hi,guys: > > > > I am trying to connect to a NFS-filesystem on a CentOS 5.3 i386 guest > > system. The host system is CentOS 5.4 x86_64. > > I set up the NFS server correctly and rpcinfo is also ok inside the > guest > > system show. > > > > The problem is, I can't connect to, or see the open port from the > outside. I > > use the Host-Only network setup with VirtualBox 3.1.0, > > the ip address in the guest system is 192.168.56.101 . and the host > system > > ip address is 192.168.7.67 > > > > When I mount the directory from the guest system via NFS, the result is > the > > following : > > "mount : 192.168.56.101:/xx failed , reason given by server:Permission > > denied" > > > > I hope one of you can give me a hint in which direction I should > continue > > my efforts. > > > > Thanks in advance,,, > > > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > > > If you already can ping the nfs server, then you should check this: > 1. nfsd service > 2. open port on iptables > 3. /etc/host.allow or /etc/host.deny > > You can check share folder from nfs client with command: > showmount -e ip.nfs.server > If the folder appears, then you can start to mount that otherwise you > should check your /etc/exports again. > > > CMIIW. > > -- > If knowledge belong to the world, > why don't you give me some? > ---------------------------------------------- > http://dudulz.wordpress.com > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100426/3e500574/attachment-0005.html>