Deployment A

This configuration consists of having a computer network - which might be the network of a company with its servers, printers, user computers ... - and external clients, connected from outer physical locations, and wanting to access to the computer network as if they were inside it.

The computer network has a gateway, which is the entrance point of the network, and inside it there is a machine, host A, running the SERVAL server. The SERVAL server is listening in the port 5690, for tcp, the 5443 for ssl and the 6690 for udp. The gateway makes port forwading and redirects the incoming connections to these ports to the same ports in host A.

In this deployment there are three clients:

• external machine 1. It is a computer which connects to SERVAL from an external location through the network gateway.
• external machine 2. It is a second user which connects to SERVAL from outside through the gateway.
• internal machine 1. It is a computer placed inside the network and, therefore, which connects to SERVAL through the intranet. It has installed a SAMBA server.

A draw which summarizes graphically all this can be observed here.

With this deployment we assigned to the SERVAL clients IPs from the same subnet range, the 192.168.30.X, and we created in SERVAL a VLAN, vlan1. After that, the three clients joined to it and we did the following tests:

• We made a broadcast ping from each client to the network 192.168.30.X and the three clients connected to the VLAN vlan1 answered.

      $ ping 192.168.30.255

       64 bytes from 192.168.30.12: icmp_seq=0 ttl=64 time=0.0 ms
       64 bytes from 192.168.30.14: icmp_seq=0 ttl=64 time=14.7 ms (DUP!)
       64 bytes from 192.168.30.6: icmp_seq=0 ttl=64 time=135.4 ms (DUP!)

• We executed from external machine 1 and external machine 2 the smbtree utility and we discovered the directories shared by the internal machine 1 SAMBA server - smbtree uses Netbios over TCP/IP and as broadcast discovery packets TCP broadcasts -.

div class="twikiTopicInfo twikiRevInfo twikiGrayText twikiMoved"<&i>Serval.DeploymentA moved from Serval.DeploymentExamples on 26 Jul 2005 - 15:55 by JavierMoran - put it back