modem for PPPoA

i've just switched dsl provider.
the former provided PPPoE the latter PPPoA
the modem i currently use (ericsson hm220dp) can handle both protocols
but when used with PPPoA would block entering connections preventing
the use from outside of services such as ftp and apache.
i am, therefore, looking around for a new one (adsl2) which would allow
for the use of a/m services, but the one i've found interesting,
linksys adsl2mue, has an internal firewall which would not allow making
use of emule because this program needs that a range of high ports be
opened and from information i gathered thru google there is no way (at
least up to now) to modify the internal firewall for allowing this.
herebelow please find the configuration suggested by the dsl provider:
VPI: 8
VCI: 35
Protocol: PPP over ATM (RCF 2364)
Encapsulaton: VC-Multiplexing (VC-MUX)

What i need therefore is your advice as for which modem would be more
suitable for my needs.
many thanks
aldo

by mistake i indicated the wrong program: i was referring to amule and
xmule
and the modem should be an ethernet one since my home server (debian
sarge) is quite old and has not got any usb ports.
thanks
aldo