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Version: 3.3.5
– DR05 – 23.03.2017
Status
– Diagnostics
22.13
Label
Description
Ping
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.
TraceRoute
This command provides more information about the network connection between the
router and a remote or other computer. It traces and displays the route.
NS Lookup
This function can be used to check whether name resolution
(
= 88.12.12.34) 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 network
’s DNS server is available.
TCPDUMP Options
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 con-
nections 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 verbosemode level 3 (-vvv) on interface (-i) WAN (-eth1)
For more detailed information about TCPDUMP, visit:
