It would be better to have the DSL box do that for you. I'm assuming that DSL supports sysctl, so you can modify /etc/sysctl.conf to do it for you:
Code:
net.ipv4.netfilter.ip_conntrack_max = 2048
net.ipv4.netfilter.ip_conntrack_generic_timeout = 50
etc.
Then just have sysctl read the new values with
sysctl -p. Or, just add them to one of your startup scripts:
Code:
echo 2048 > /proc/sys/net/ipv4/netfilter/ip_conntrack_max
etc.