shared folders stopped working

[pkaplan]

Running VB 1.5.2 on Kubuntu 7.10 host/XP guest
Recently, all shared folders became inaccessible. When I attempt to access I get the following XP error dialog:

\\VBOXSVR\<directory> is not accessible. you might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.
The network path was not found.

All of the shared folders are local to the host. I tried deleting and reinstalling the folders with no improvement.

Any help would be greatly appreciated.

Paul

[Ingo]

Shared Folders are buggy.
Use Samba instead.

[pkaplan]

My XP guest is configured to be part of a corporate network.

If I run a samba server on my host, is it possible to connect the XP guest to it without compromising its ability to connect to the corporate network? Could you point me to some tutorials/HOWTOs on such a setup?
Paul

[Ingo]

You can setup a bridge for the transparent connection of the guest to the corporate network. And then you can setup a second interface reserved only for samba. Samba can restrict access to this interface.
I've setup this in a short on my test machine.

My /etc/network/interfaces:

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# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# setting up the bridge #######
auto eth0
iface eth0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down

auto tap0
iface tap0 inet manual
    tunctl_user ingo
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down

auto br0
iface br0 inet dhcp
    bridge_ports eth0 tap0
# End setting up the bridge ###

# an interface only for a local connection to samba
auto tap1
iface tap1 inet static
    tunctl_user ingo
    address 192.168.2.1
    netmask 255.255.255.0

My Samba settings:
~$ testparm -s
Load smb config files from /etc/samba/smb.conf
Processing section "[homes]"
Processing section "[winbox]"
Loaded services file OK.
Server role: ROLE_STANDALONE

[global]
workgroup = HOME
interfaces = tap1
bind interfaces only = Yes
obey pam restrictions = Yes
passdb backend = tdbsam
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\sUNIX\spassword:* %n\n *Retype\snew\sUNIX\spassword:* %n\n *password\supdated\ssuccessfully* .
syslog = 0
log file = /var/log/samba/log.%m
max log size = 1000
dns proxy = No
panic action = /usr/share/samba/panic-action %d
invalid users = root

[homes]
comment = Home Directories
valid users = %S
read only = No
create mask = 0700
directory mask = 0700
browseable = No

[winbox]
comment = Windows box application data
path = %H/.winbox
valid users = %U
read only = No
create mask = 0700
directory mask = 0700
browseable = No
~$

Setting up interfaces to VirtualBox:

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~$ VBoxManage modifyvm "MyVM" -nic1 hostif -hostifdev1 tap0 -cableconnected1 on -nic2 hostif -hostifdev2 tap1 -cableconnected2 on -nic3 none -nic4 none
~$

This are the interfaces on the guest. Adapter 1 has DHCP enabled, Adapter 2 has a static IP address and NO Default Gateway:

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C:\Documents and Settings\Ingo>ipconfig /all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : MyGuest
        Primary Dns Suffix  . . . . . . . : 
        Node Type . . . . . . . . . . . . : Broadcast
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : private.hoeft-online.de

Ethernet adapter Local Area Connection 2:

        Connection-specific DNS Suffix  . : 
        Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter #2
        Physical Address. . . . . . . . . : 08-00-27-A6-A1-0D
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.2.2
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 

Ethernet adapter Local Area Connection 1:

        Connection-specific DNS Suffix  . : privat.hoeft-online.de
        Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter #1
        Physical Address. . . . . . . . . : 08-00-27-79-16-A7
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 192.168.1.41
        Subnet Mask . . . . . . . . . . . : 255.255.255.128
        Default Gateway . . . . . . . . . : 192.168.1.2
        DHCP Server . . . . . . . . . . . : 192.168.1.3
        DNS Servers . . . . . . . . . . . : 192.168.1.3
        Lease Obtained. . . . . . . . . . : Sonntag, 9. Dezember 2007 17:11:36
        Lease Expires . . . . . . . . . . : Sonntag, 9. Dezember 2007 19:11:36

C:\Documents and Settings\Ingo>

For me it works:

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C:\Documents and Settings\Ingo>ping www.virtualbox.org

Pinging www.virtualbox.org [88.198.19.108] with 32 bytes of data:

Reply from 88.198.19.108: bytes=32 time=47ms TTL=57
Reply from 88.198.19.108: bytes=32 time=44ms TTL=57
Reply from 88.198.19.108: bytes=32 time=45ms TTL=57
Reply from 88.198.19.108: bytes=32 time=45ms TTL=57

Ping statistics for 88.198.19.108:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 44ms, Maximum = 47ms, Average = 45ms

C:\Documents and Settings\Ingo>dir \\MyHost\winbox
 Volume in drive \\MyHost\winbox is winbox
 Volume Serial Number is 5351-0BFD

 Directory of \\MyHost\winbox

19.11.2007  10:34    <DIR>          .
09.12.2007  18:03    <DIR>          ..
13.09.2007  15:05    <DIR>          Documents and Settings
               0 File(s)              0 bytes
               3 Dir(s)  22.708.080.640 bytes free
C:\Documents and Settings\Ingo>