So router 3 can send traffic to router 2.
Let’s check whether router 1 received that traffic
and I’m gonna do that by running a Wireshark capture.
On router 1 FastEthernet port
so we gonna see what traffic arrives at this port.
So wireshark is running and on router 3 I’m gonna ping router 2 not router 1
notice there's ping, I ping from router 3 to router 2
but the traffic was received by router 1 because this is a hub and we can see
the ICMP message from router 3 to router 2 and router 2 back to router 3.
We could also do the following, let’s capture passwords
so enable password cisco on router 2 line vty 0 4, login password cisco
so I’ve enabled the VTY lines on router 2
Let's see if we can capture or log in information on router 1
when router 3 telnets to router 2.
So on router 3 telnet 10.1.1.2
This is router 2 log in with the password of Cisco.
In wireshark we are seeing telnet data.
So scrolling down, we can see some negotiations taking place
and notice user access verification password.
So router 2 is prompting for a password as shown over here.
Router 3 TCP information there, here’s a telnet data do echo, scrolling down.
Notice here, telnet data from router 3 to router 2
data c i s c o in other words cisco
we’ve just captured the password from router 3 to router 2.
In wireshark we could change that to only look at port 23 as an example.
So that will allow us to reduce the amount of traffic that we're seeing
so that we as an example can see the password here c i s c o
so we've just captured the password that was sent from router 3 to router 2
on router 1 because this is a hub.