hello

I have a router for a dsl connection. i have connected few pc to it on a switch. everything works fine. the only problem is, that the external IP changes from time to time (due to disconnects from the ISP, or reseting the router and stuff).

how could i possibly write a program/script with/without SNMP (supported by the router) to determinate the external IP (i thougt of some kind of polling) and in case of a change notify myself of that change (so that I always know the external IP of my router)?

i have no clue what SNMP can do and how to use it.

any help is appreciated.

thanks

raven

first use...
snmpwalk x.x.x.x public

to see the list of variables in the router, then use...
snmpget x.x.x.x public zzz.zzz

to get whatever variable(zzz.zzz) from the router

if I do that, i get a tiemout. i am sure snmp is running on the router, and of cource i know the internal ip of it.

is snmp listening on a specific port? i might have closed that port...

thanks

raven

port 161 i think, also check that the router's snmp id is set to "public".

it is set to "public".

I will have to check the port settings. thanks so far.

raven