User`s guide

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Serial Interfaces
The checkboxes shown under this heading are used to select the serial interfaces over which
packets will be captured and included in the analyser trace. The list of available interfaces
will include the physical serial interfaces, internal virtual serial interfaces (if present) and
interfaces used by built-in WWAN and/or PSTN modems.
Ethernet Interfaces
The checkboxes shown under this heading are used to select the Ethernet interfaces over
which packets will be captured and included in the analyser trace.
Raw SYNC Sources
The checkboxes shown under this heading are used to select the synchronous sources over
which packets will be captured and included in the analyser trace.
DSL PVC Sources
The checkboxes shown under this heading are used to select the ADSL ATM PVCs over
which packets will be captured and included in the analyser trace.
PPP Interfaces
The checkboxes shown under this heading are used to select the PPP interfaces over which
packets will be captured and included in the analyser trace.
IP Sources
The checkboxes shown under this heading are used to select the IP sources over which
packets will be captured and included in the analyser trace. These sources include IP
packets transmitted and received over Ethernet, PPP and OpenVPN (OVPN) interfaces. It is
also possible to select GRE Tunnels via the advanced sections of the individual GRE Tunnel
configuration pages.
IP Options
Trace discarded packets
This checkbox is used to enable or disable the capture of packets that are discarded by
an interface along with a reason for why the packet was discarded.
Trace loopback packets
This checkbox is used to enable or disable the capture of IP loopback packets.
IP Packet Filters / Discarded IP Packet Filters
TCP/UDP Ports
This parameter is used to filter out TCP or UDP packets with particular source or
destination port numbers. The format of this parameter is a comma-separated list of port
numbers. For example, you may wish to exclude the capture of Telnet and HTTP traffic
that would otherwise swamp the data of interest. This can be done by entering “23,80”
for this parameter.
Conversely, you may wish to only capture traffic on a specific source or destination port.
To do this, use a tilde (~) symbol before the list of ports. For example, to only capture
Telnet and SSH packets, enter “~22,23” for this parameter.
IP Protocols
This parameter is used to filter out IP packets with particular IP protocol numbers. The
format of this parameter is a comma-separated list of protocol numbers. For example,
you may wish to exclude the capture of TCP traffic that would otherwise swamp the data
of interest. This can be done by entering “6” for this parameter.
Conversely, you may wish to only capture traffic with a specific IP protocol number. To
do this, use a tilde (~) symbol before the list of protocol numbers. For example, to only
capture UDP traffic, enter “~17” for this parameter.