Assembled Illuminati; some very naive IP network questions;understanding seems to come very slowly to me; but I am very 'nosy'.! Background: I have an iPrimus ADSL 2Plus account providing an internet connection via a DSL-502T router , accessible via ether USB or Ethernet cable; which is still functioning ! I had an iPrimus 'NBN Co First Release Trial' account providing an internet connection via a Linksys 2000; accessible via Ethernet or wireless; internet access is currently blocked, pending the replacement of the ADSL account with a NBN-Fibre account. Details of the latter: $66/month bundled internet and phone, VOIP local,STD included; mobile at $0.30/ min no flagfall; 15GB/ month cap , 25 Mb/s down 10 Mb/s up; Realistically I'm expecting about 1.25MB/s down ! which is still an improvement on my ADSL; which is only 0.150 MB/s on a good day. . Questions : 1/ The DSL-502T has a web interface at 10.1.1.1 and a 'system' interface at 10.1.1.1 using Putty; the Linksys 2000 has a web interface at 192.168.1.1 but no system interface at 192.168.1.1; why is that ? 2/ I take it that 10.1.1.1 and 192.168.1.1 are the local IP addresses ; other wise I would be accessing everyone else's routers ?...the mist clears very slowly ! 3/ Would the NBN Network Terminating Device which appears to be a fibre-optic router m/n 1-240G-R ;which has an Ethernet connection to the Linksys 2000 have a local IP address ?; talking to the cable tech's who installed the NTD it would seem to have an external IP address; any way to determine this ? Please feel free to correct me if the questions are 'wrong'; regards Rohan McLeod