[gentoo-user] Gentoo ADSL wireless router (3 questions)

[Grant]

I set up my spare Gentoo box up as a wireless router for my new
Verizon ADSL connection by following the instructions here:

http://www.gentoo.org/doc/en/home-router-howto.xml

My setup is a little different though because I'm using a madwifi card
to provide wireless access.  Things are working really well, but I've
got a couple questions I'm hoping someone can help with.

1. I can't actually get:

config_eth0="adsl"

to work.  It always says: TIMED OUT.  I'm using:

config_eth0="dhcp"

instead which times out half the time and half the time gets me the IP
192.168.1.47 and provides connection to the Internet.  Isn't that
weird?  Is it even checking my username/password that's in the
ppp/pppoe config files?

2. I followed the instructions at the above link to set up iptables. 
When I try to ssh into the router from another machine on the network,
I get "Connection refused."  I'm guessing it's from the firewall.  Is
there a good utility that will allow me to manage the firewall?

3. I'm using iwconfig and WEP right now, but I'd really like to use
WPA.  I believe wpa_supplicant is the way to do that.  I tried to set
up wpa_supplicant in mode=1 on the router, but the ath0 interface
times out when I try to start it.  I took the config straight from
wpa_supplicant.conf.example:

network={
        ssid="mynetwork"
        mode=1
        proto=WPA
        key_mgmt=WPA-NONE
        pairwise=NONE
        group=TKIP
        psk="mypassphrase"
}

Can anyone help with any of this stuff?

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