You see a yellow triangle with an exclamation mark (a warning icon)
next to the name of the peer you want to communicate with and no traffic is
going through between the peers.
You generally see a warning next to a peer if the security settings
block traffic between peers.
Click on the warning icon and then click on the description of the
problem. This opens the
Peer Properties window. The errors are marked in
If there is a connection
error, on the
Settings tab, click the
change link next to
Traffic. Then change the setting to
Block unsecured or
Important: We do not recommend that you select
If there is an
authentication error, the peer is untrusted by your client. Click on the
details link next to the error and then click
on the description of the error. Then click
Trust to authenticate the peer.