PI Ping Interface
From SCADApedia
Ping is a computer network tool used to test whether a host is available on an IP network. OSISoft's PI ping interface uses ping to determine the availability of a host on an IP network. The PI ping interface may also be used to determine the amount of time it takes to reach a target on an IP network.
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Ping
The ping tool sends an Internet Control Message Protocol (ICMP) Echo Request packet to a target. If the target reply's with an ICMP Echo Reply message, the target is up. No response from the target does not necessarily mean the machine is down; many firewalls prevent ICMP Echo Requests from reaching the target.
Ping may also be used to determine how long it takes a packet to reach it's destination and return. The ping tool records the time a ICMP Echo Request packet is sent and records the time the ICMP Echo Reply message is received. The difference of the send time from the receive time is reported back to the user.
PI Ping Interface
The OSISoft PI ping interface issues an ICMP Echo Request to a machine. If the machine responds with an ICMP Echo Reply, the response time is recorded. The user may configure the PI ping interface to send multiple Echo Requests and derive an average response time.
- Location 2 = Number of pings for the PI ping interface to send.
- Location 3 = Number of valid ping responses from target before a value is written to PI.
- Location 5 = Debug level.
- Instrument Tag = Name or IP of the machine being pinged.
PI Ping in Portaledge Attack Detection
The OSISoft PI ping interface will be used to detect when a machine becomes unavailable or the response time changes. An attacker may try to assume the identity of another machine or perform a Man-In-The-Middle (MITM) attack. A MITM attack would produce slower response times. A machine may be taken offline during an attack.
