Hi,
Show Con flags are as follows:
d Dump, clean up connection.
f FIN seen in inbound packet.
F FIN seen in outbound packet.
H HTTP get. If a UDP connection, H can also mean H.323.
I Data in.
J Java applets are not permitted on connection.
m SMTP data.
O Data out.
q SQL*Net data fixup.
R RPC
r In use.
U Connection is up.
Hope this helps,
Russky - CCNA