Running on a RB100AHx4, ROS version 6.47.
In the following examples, real IP addresses are replaced with TEST-NET-x networks.
The IP address of the ROS/Dude server is 192.0.2.10/24 and I am trying to scan the network 198.51.100.0/24.
- The appropriate routes are in place and there are no firewall rules blocking traffic.
- I know there are 33 hosts in the network 198.51.100.0/24.
- If The Dude does a fast scan, it shows 2 hosts in the network.
- If The Dude does a reliable scan, it shows 10 hosts in the network.
- I can manually ping all 33 of the hosts on the remote network from the command line on The Dude server.
- If I change the scan to only look for one IP address for a host I can ping manually - 198.51.100.106/32, The Dude says it doesn't exist.
- If I run the same scan to 198.51.100.106 and packet trace, then I see: An outbound ping, a reply. Immediately the reply is received, The Dude sends out udp/137 and tcp/8291 and receives replies (port unreachable and RST,ACK respectively). It then sends out two more pings which are both replied to.
- If I run a scan on an unused IP, I only see three pings go out (obviously with no replies) and that's it.
Does anybody have any ideas?