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SBC session border controllers
Traces
4.1.10.1
PCAP traces
The menu is used to configure parameters for network traffic analysis and TDM network protocols.
Traces –> PCAP traces
TCP-dump — TCP–dump utility settings:
–
Interface —
interface for network traffic capture;
–
Capture length limit (0 — no limit) —
size limit for captured packets, in bytes;
–
Add filter —
packet filter for tcpdump utility.
Structure of filter expressions
Each expression that defines the filter includes a single or multiple primitives containing a single or multiple
object identifiers and preceding qualifiers. Object identifier may be represented by its name or number.
Object qualifiers
1.
type
— indicates the object type specified by identifier. Object type may be represented by
the following values:
–
host
,
–
net
,
–
port
.
If object type is not defined,
host
value will be assumed.
2.
dir
— defines the direction towards the object. The following values are supported:
–
src
(the object is a sender),
–
dst
(the object is a recipient),
–
src or dst
(a sender or a recipient),
–
src and dst
(a sender and a recipient).
If
dir
qualifier is not defined,
src or dst
value will be assumed.
For traffic interception from artificial interface
any
, qualifiers
inbound
and
outbound
may be used.
