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Virtualbox guest as a firewall for lUbuntu host

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Special Forums Cybersecurity Virtualbox guest as a firewall for lUbuntu host
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Old 12-23-2015
Question Virtualbox guest as a firewall for lUbuntu host
Using virtualbox, I am trying to use Alpine linux (guest) as a firewall for my lubuntu (host). My physical network card (NIC) is eth0.

ISP WAN -> Alpine linux (guest) -> lubuntu (host) LAN

I am trying to get the ip from my ISP DHCP server but I had no success. I know that in virtualbox I have to use bridged adapter in eth0.
But in AlpineLinux (guest) do I have to create a vlan? Thats where I get confused.

ISP WAN -> DHCP -> Alpine linux (guest)

I was able to do this with two PCs like this:

ISP WAN --> Alpine linux firewall (PC1) --> Lubuntu LAN (PC2)

But now I am trying to do it with just one PC using virtualbox like this:

ISP WAN --> Alpine linux firewall (PC1) (Guest) --> Lubuntu LAN (PC1) (Host)
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rpdump

rpdump(1)						      General Commands Manual							 rpdump(1)

NAME

       rpdump - alpine remote data utility

SYNTAX

       rpdump [ -f ] -l Local_file -r Remote_folder

DESCRIPTION

       Rpdump may be used to copy the actual data from remote Alpine configuration files or address books into a local file.  It is intended to be
       used by system administrators.  Regular users should normally use the facilities provided within Alpine.

       Local_file will normally be a local temporary file.  Remote_folder is the IMAP folder being used as a remote Alpine configuration (with the
       help  of Alpine's -P, -p, and -x commands or PINECONF, PINERC, and PINERCEX environment variables) or remote Alpine address book folder.  A
       copy of the data from Remote_folder will be copied to Local_file.

       -f		   Force the dump even if the remote folder is in an unrecognized format.

       -l Local_file	   The file on this system that is to be copied to.

       -r Remote_folder    A remote folder name to be copied from.  See the Alpine documentation for the syntax of  a  remote  folder  name.   One
			   example is
			   {my.imap.server}remote_pinerc.

DIAGNOSTICS

       Exit status is zero if all goes well, -1 otherwise.

SEE ALSO

       Rpload(1).

       Copyright 1989-2007 by the University of Washington.

       $Date: 2005/01/14 20:40:14 $

																	 rpdump(1)