ICMP Ping (IPv4 and IPv6) Modes
ICMP Ping mode
uses ICMP echo request packets
to ping a target device. The target typically responds with
ICMP echo reply packets. The time it takes for a packet
to get the target and back is called the round trip time.
ICMP Ping mode sends ICMP Echo Request Packets like the
command line tool built into Windows.
NetScanTools Pro has three modes of ICMP ping: MS ICMP mode
(for IPv4) uses an operating system function to send and
receive the ping packets. MS ICMPv6 mode (for IPv6) also
uses an operating system funciton to send and receive the
ping packets. The other mode for ICMP ping uses WinPcap
as both the transmission and reception driver. The
WinPcap dependent method allows sub-millisecond
timing resolution for ping round trip times in contract
to the MSICMP Ping method that has a resolution in the
10s of milliseconds.
- The data portion of the payload
for ICMP ping may be a simple 'a-z' repeating character
string or the contents of any file you choose (binary
- ICMP Ping (WinPcap mode) allows
full control over the Differentiated Services CodePoint
Bits (DSCP) and the Explicit Congestion Notification
bits, ECN-ECT, ECN-CE. You can change these bits to
observe the effect on packet delivery through routers.
This applies to WinPcap send/receive modes only.
ICMP packets are sometimes blocked by
firewalls either between you and the target or on the target
itself, so NetScanTools Pro has two other methods of 'pinging'
a target: UDP and TCP.