Recently I had to put a new OS on my 2nd computer. Since then I have not been able to mount a file share from box 1 on box 2. My specs are this:
box 1
Compaq Presario SR1426NX
2.93Ghz Pentium 4
512MB PC2-3200 DDR2 SDRAM
160GB Serial ATA hard drive
dual booting win XP & FC4

box 2
HP Pavilion
500Mhz Celeron
256MB ram
80GB hard drive
running Ubuntu 5.10 "Breeze"

The file sharing I do, is linux to linux, and notwin to linux. I also print share, which really hasn't been near the problem. I have been able to mount files from box 2 on box 1 using:

mount -t nfs 192.168.2.6:/home/bill /mnt

But when I try the same thing on box 2 I get a "RPC error no route to host"
Here are my /etc/hosts & /etc/hosts.allow files. I think they are correct, but who knows at this point.

/etc/hosts =

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 Goliath.justbillsguitars.com localhost localhost.localdomain
192.168.2.0/24 Ulysses.justbillsguitars.com

/etc/hosts.allow =

#
# hosts.allow This file describes the names of the hosts which are
# allowed to use the local INET services, as decided
# by the '/usr/sbin/tcpd' server.
#






ALL: 192.168.2.0/24

The above files are off of box 1. I will go to box 2 and post the same files from there, and the error I get when I try to mount box 1.

Thanks
Justbill

O.K. here is the error from box 2:

root@Ulysses:/home/bill# mount -t nfs 192.168.2.2:/home/Bill /mnt
mount: RPC: Remote system error - No route to host

I really can't figure that one out! Here is my /etc/hosts file from box 2:

127.0.0.1 Ulysses.justbillsguitars.com localhost localhost.localdomain
192.168.2.2 Goliath.justbillsguitars.com
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

and here is my /etc/hosts.allow:

# /etc/hosts.allow: list of hosts that are allowed to access the system.
# See the manual pages hosts_access(5), hosts_options(5)
# and /usr/doc/netbase/portmapper.txt.gz
#
# Example: ALL: LOCAL @some_netgroup
# ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
#
# If you're going to protect the portmapper use the name "portmap" for the
# daemon name. Remember that you can only use the keyword "ALL" and IP
# addresses (NOT host or domain names) for the portmapper, as well as for
# rpc.mountd (the NFS mount daemon). See portmap(8), rpc.mountd(8) and
# /usr/share/doc/portmap/portmapper.txt.gz for further information.
#
ALL: 192.168.2.0/24


So,as I said earlier, I really am at a loss on this, and have gotten no replies to my networking questions, over at the Ubuntu forums. This seems to be an issue with Ubuntu (on box 2), as I did not have this problem with CentOS (which unexpainably crashed beyond repair). So far I am happy with this distro, with the exception of this issue. Could someone please help!

Thanks much
Justbill

Ideas:

1)Can we try this without hosts.allow entries? (no tcpwrappers)
2)Iptables running?
3)can we try smbfs or some other filesharing proto?
4)can you mount via loopback onto itself?

What do your /var/log/messages say?

This is what I found in /var/log/messages (just the last few lines):

Mar 3 22:12:32 Ulysses kernel: [4312947.221000] DROPPED IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:11:d8:b7:b0:47:08:00 SRC=192.168.2.2 DST=255.255.255.255 LEN=146 TOS=0x00 PREC=0x00 TTL=64 ID=3648 DF PROTO=UDP SPT=631 DPT=631 LEN=126
Mar 3 22:12:33 Ulysses kernel: [4312948.222000] DROPPED IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:11:d8:b7:b0:47:08:00 SRC=192.168.2.2 DST=255.255.255.255 LEN=171 TOS=0x00 PREC=0x00 TTL=64 ID=3649 DF PROTO=UDP SPT=631 DPT=631 LEN=151
Mar 3 22:13:03 Ulysses kernel: [4312978.225000] DROPPED IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:11:d8:b7:b0:47:08:00 SRC=192.168.2.2 DST=255.255.255.255 LEN=146 TOS=0x00 PREC=0x00 TTL=64 ID=3650 DF PROTO=UDP SPT=631 DPT=631 LEN=126
Mar 3 22:13:04 Ulysses kernel: [4312979.225000] DROPPED IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:11:d8:b7:b0:47:08:00 SRC=192.168.2.2 DST=255.255.255.255 LEN=171 TOS=0x00 PREC=0x00 TTL=64 ID=3651 DF PROTO=UDP SPT=631 DPT=631 LEN=151

To be truthful, I don't understand what any of that means, but there it is. With /etc/hosts.allow I took out the entry and tried to mount again, and got the same error:

root@Ulysses:/var/log# mount -t nfs 192.168.2.2:/home/Bill /mnt
mount: RPC: Remote system error - No route to host

I really don't know how to tell if the IPTables are running or not, I will try to find out and get back to you on that.
I am willing to try any file and print sharing proto, is smbfs Samba? I will try and use whatever works, plus I am eager to learn this stuff anyway! And finally, I have no idea how or what you mean by mounting via "loopback". I would be glad to try, if you could give me a brief explanation.

Thank Much
Justbill

smbfs is samba, and you can check iptables by doing something like

service iptables status
or
/etc/init.d/iptables status

mounting over loopback == localhost, basically replace machine2 with localhost

see what happens, report back my friend. You can IM me or email me if you like too...

from box 1 (Goliath):

[root@Goliath Bill]# /etc/init.d/iptables status
Table: filter
Chain FORWARD (policy ACCEPT)
target prot opt source destination
RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0

Chain INPUT (policy ACCEPT)
target prot opt source destination
RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain RH-Firewall-1-INPUT (2 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 255
ACCEPT esp -- 0.0.0.0/0 0.0.0.0/0
ACCEPT ah -- 0.0.0.0/0 0.0.0.0/0
ACCEPT udp -- 0.0.0.0/0 224.0.0.251 udp dpt:5353
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:631
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

and then:

[root@Goliath Bill]# mount -t nfs localhost:/home/Bill /mnt
mount: localhost:/home/Bill failed, reason given by server: Permission denied
[root@Goliath Bill]#

This was from box 1 (Goliath). I had been using DNS, but quit doing that when this problem began. The computers are:

box 1=Goliath.justbillsguitars.com
box 2=Ulysses.justbillsguitars.com

however, DNS is really not that big of a deal to me, as long as I can get my file sharing going again.

I will go back and post the same stuff from box 2 now.

Justbill

here is the output from iptables status:

bill@Ulysses:~$ su
Password:
root@Ulysses:/home/bill# /etc/init.d/iptables status
bash: /etc/init.d/iptables: No such file or directory
root@Ulysses:/home/bill# service iptables status
bash: service: command not found

Oops, doesn't look like its there. And then this:

root@Ulysses:/home/bill# mount -t nfs localhost:/home/bill /mnt
mount: localhost:/home/bill failed, reason given by server: Permission denied
root@Ulysses:/home/bill#

and then I tried it this way:

root@Ulysses:/home/bill# mount -t nfs 127.0.0.1:/home/bill /mnt
mount: 127.0.0.1:/home/bill failed, reason given by server: Permission denied
root@Ulysses:/home/bill#

So I couldn't get any output from IPTables on box 2. Do I need to start IPTables on box 2, and how would I do that?

I will do some reading on smbfs, later on today and see if I can get that going. Isn't Samba a Windows (client) to Linux (server) application? Will that work linux (Ubuntu) to linux (Fedora Core4) as well?

Thanks
Justbill