You my friend are AWESOME!
THATS EXACTLY what the problem was.
Even before trying it out I KNEW this would definitely work, long and
behold... IT DID..

Changing adapter type for nics did not work for me, so i did the following

Steps I've taken to make this work :
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) used vmware converter to clone monowall (so I can do testing on this new
clone, rather than messing up current firewall settings)
2) deleted the NICs from new vmware cloned monowall
3) readded the NICS and selected : adapter type -> e1000
4) Started new VM and setup interfaces & Ip addresses
5) downloaded the configuration from webgui on the old vm monowall
6) restores configuration on the new vm monowall
7) shut down old VM monowall & setup original ip address of new firewall.

voila done... works, no more checksum errors and I can now FTP with no
issues. Problem resolved!
Thank you Manuel
Joe


On Mon, Feb 6, 2012 at 3:00 PM, Manuel Kasper <mk at neon1 dot net> wrote:

> On 06.02.2012, at 20:54, Joe Cavaliere wrote:
>
> > I have executed the 2 commands by visiting /exec.php page and executed
> both commands
> >
> > ifconfig em0 -rxcsum -txcsum
> > ifconfig em1 -rxcsum -txcsum
> >
> > When I try to FTP to a server, the Monowall console shows:
> > in_cksum_skip: out of data by 20
>
> Interesting... That does seem to indicate that the problem is
> checksumming-related.
>
> > connecting to FTP still not working on VMWARE .
> > *Note that my LAN and WAN use lnc0 & lnc1
>
> I'd strongly suggest changing your .vmx file to switch all four virtual
> NICs to e1000. The lnc driver is hopelessly outdated and has bad
> performance (and perhaps bugs too...).
>
> See here: http://kb.vmware.com/kb/1003020
>
> - Manuel