RuggedCom RuggedRouter RX1100 - Manual (Page 211)

23. Network Utilities
Revision 1.14.3 211 RX1000/RX1100™
23.7.1. Tcpdump A Network Interface
Figure 23.7. Tcpdump Menu
The Interface to capture on field specifies the interface to show traffic on.
The Maximum packets captured and Maximum capture time fields limit the amount of traffic
captured.
The Lookup addresses field causes IP addresses to be resolved into domain names. This can make
tcpdump behave very slowly if DNS is not properly configured.
The Display link level header field causes this header to be displyed.
The Perform HEX/ASCII dump field causes the data content of the captured packets to be displayed.
This option may generate a large capture data set.
The Verbosity fields specify the level of decoding which tcpdump supplies.
The Ignore hostname/Only hostname selector causes traffic to or from from the specified address
to be excluded or included to the exclusion of other traffic, respectively. One of the following three
check boxes must be selected in order for filtering to take place. If the SSH box is selected, SSH traffic
to or from the selected IP address will be excluded/displayed. If the Webmin traffic box is selected,
Webmin traffic to or from the selected IP address will be excluded/displayed. If the All traffic box is
selected, traffic to or from the selected IP address will be excluded/displayed. A typical usage of this
filter is to dump all traffic on an interface and to prevent the user's own traffic from being displayed.
The Ignore protocols/Only protocols selector excludes or displays traffic in the protocols specified
in the accompanying check boxes.
The Ports to trace field specifies TCP/UDP ports to trace. Enter a list of port numbers separated by
spaces to trace more than a single port.