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Version: 5.1.6 – June 4
th
, 2018
Status – Diagnostics
After an Internet address or IP address is entered, the ping command can determine
whether the address in question can be reached.
This is e.g. an easy way of determining whether there is an Internet connection active.
This command provides more information about the network connection between the router
and a remote or other computer. It traces and displays the route.
This function can be used to check whether name resolution (https://www.google.com =
216.58.209.206) takes place. If this function ends in an error message, check whether
there is a DNS server address under Network DNS in your mbNET or whether your net-
work’s DNS server is available.
You can use the command TCPDUMP to track the network traffic. Exempels of using
TCPDUMP:
-i eth0 not port 80
Show all TCP/IP Connections on the interface (-i) LAN (eth0), but don’t (not) show connec-
tions who are using port 80. (http)
-i eth1 port 23
Show all TCP/IP Connections on interface (-i) WAN (eth1), with port 23. (port 23)
-vvv -i eth1
Show all data traffic in verbose mode level 3 (-vvv) on interface (-i) WAN (-eth1)
For more detailed information about TCPDUMP, visit: www.tcpdump.org
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