Zyxel Router multi-nat
Posted on 2009-05-18
I have a P-660HW-D1
Firmware V3.40(AGL.6) | 04/24/2009
I've set up full feature NAT, and have a block of 8 external addresses (5 usable).
There are several problems, but the first is that response to external access is intermittent (and the rules I have to set seem strange).
1. First, if I map (IP changed for security reasons)
External A.B.C.117 to Internal 10.0.0.5
then hit the external address, the log reports "access denied" to A.B.C.117 (not 10.0.0.5).
2. Fair enough, I add a firewall rule to permit access WAN to WAN/Router A.B.C.117
then my attempt shows "Access Permitted". However, it's pot luck whether I actually do get access, sometimes yes, sometimes no. Occasionally, the connection drops, and I just can't get in again.
3. There is a similar problem with remote management. When I do occasionally manage to login remotely, virtually any addition to the address mapping or firewall rules disconnects me. Extremely irritating. It can then be minutes or hours before I can login again.
Anyone actually managed to get multi-nat on these routers to work?