Not sure what you mean by SNAT. There doesn't seem to be any NAT involved, I get a public IP and I use it to host services. You can't plug more than one device into each port of the NBN device, it's not a router. On Tuesday, March 4, 2014, Trent W. Buck <trentbuck@gmail.com> wrote:
Noah O'Donoghue wrote:
I've got 100/40 NBN with iinet..
I just used my old Asus rt-n16.. NBN gives you a plain old Ethernet with DHCP. No auth. Simple as.
Well, DHCP (and SNAT?) is a bit gratuitous for a point-to-point link. I can understand why they do it, though. Fewer derps from their non-technical customers.
However, I tried latest openwrt trunk on my router.. Worked great but limited the speed to about 40Mbps.
Turns out the native firmware uses 'hardware NAT' which works much better.. (Wire speed, 95/38 on speedtest.net). Unfortunately the native firmware is full of bugs..
This hardware NAT is a part of broadcoms binary blob, is a hack, and it's unlikely you'll get it to work on any open firmwares. I suspect you may have trouble with NBN on any router running open firmware, unless the CPU is ridiculously over powered.
Interesting and horrible.
I am surprised the system can't handle at least 100mbps doing NATting in netfilter -- NAT state is not terribly expensive to maintain.
Worst case, of course, you can just put down an x86-64 whitebox desktop as your bastion router, and relegate the WRT to doing only switching & wifi AP. If the bottleneck really is the CPU, that'll fix it.
Hmm... NT-R16 is a 480MHz BCM4718, WNDR3800 is a 680MHz AR7161. Are they of comparable speed?