necessary of one it helps regarding routes.

I have two nets located in different cities.

Ns1.cityA (209.13.141.x)
* 198.17.74.x
Ns1.cityB(207.16.241.x)
* 198.16.74.x

I am enters these two cities (city.C) and necessary to have access the machines with invalid IP of cityA(198.17.74.x) and the cityB(198.16.74.x)

I know that it is difficult to happen of a woman to like linux, but im a case.
hehehehe

if somebody will be able to help me, ill be grateful.

bye

Let me get it straight. You have two valid IP addresses, one in Virginia and one in Argentina. There are private networks behind these IP addresses, right? And you are not using IP address ranges reserved for private networking. You are using 198.x.x.x instead?

Tanks for me to answer Emerson.

I am in City.C (201.40.161.x)
Am Valid IP, and I am needing to have access them I scheme of the City.A and City.B that are behind of the servers (198.17.74.5 and 198.16.74.5)

....(*)------INTERNET-----(*)-----INTERNET-----(*).....
.____Server___.....____Server___........______ME____..
.|209.13.141.x|....|207.16.241.x|.......|201.40.161.x|.
.|---City-A---|....|---City-B---|.......|---City-C---|.
.|___________|....|__________|........|__________|.
........|........................|.............................
.____Machine__....____Machine_.........................
.|198.17.74.5|......|192.16.74.5|........................
.|_________|.......|__________|........................
.......................................................
....../\....................../\............................
......||......................||............................
..I NEED ACCES.........I NEED ACCES....................

You have really get things right from the beginning.
First, what kind of server is 209.13.141.x? Is it just a firewall/gateway or does it NAT? (198.x.x.x is public address and cannot be used for private networking. If it is then you are breaking rules and damaging interests of legit user of this IP address.)
Second, do you need access just to one computer behind that server or many of them?
Third, what kind of access this has to be (ssh, http, ftp etc.)?

209.13.141.x is a firewall server.
necessary to have access several scheme that are beh of this server
in the case are bridgh orinoco (access point)
I am thinking about creating a tunnel between these nets, I do not know which are the problems that could happen if treating to security....
do u know?