Port 545OSIsoft PI Server Client Access
Port 545 is primarily used for communication between OSIsoft PI Servers and client systems. The PI System is a widely deployed industrial data management platform that collects, analyzes, visualizes, and shares large amounts of high-fidelity, time-series data from various sources including sensors, controllers, and SCADA systems. This port supports connectivity and data exchange between the PI Server infrastructure and client applications..
- transport
- tcp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 7,038
single transport
payload readable on path
used by convention
caution
rank 728 of 993 · top 73%
Technical Details
what runs on :545Port 545 enables client access to OSIsoft PI Servers, a critical component in industrial environments for managing real-time operational data. The PI System supports the collection and aggregation of sensor outputs, control signals, and system events then organizes this data within a centralized repository. Client applications leverage port 545 to send queries, perform analytics, and retrieve time-series data necessary for monitoring and optimization.
Communication over port 545 generally utilizes proprietary protocols optimized for high-volume, low-latency data transfers crucial for real-time data monitoring and analytics. Interfaces can include custom APIs, SDKs, or standard remote data access libraries embedded within OSIsoft’s client toolset, often integrated with visualization dashboards and analytics engines.
Given its role in industrial data flows, port 545 is commonly configured within secure, isolated network architectures. Its use often overlaps with other protocols and ports dedicated to historian and SCADA system communication, but it remains an essential conduit tailored to OSIsoft’s data structures and workflows.
Security Information
exposure of :545risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
network services averages 3.9 across 604 ports — this one sits 0.1 above.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
unofficial
used by convention, not registered — what answers here varies by deployment
reachable over
tcp
every listening transport is another surface to filter at the edge
security overview
Common vulnerabilities associated with port 545 include:
- Unauthorized access if authentication and authorization controls are weak or misconfigured.
- Exploitation of flaws within PI communication protocols, potentially leading to denial-of-service, data interception, or manipulation.
- Exposure of sensitive operational data over unencrypted channels facilitating data theft during transit.
Mitigations to secure port 545 include:
- Enforcing strong authentication and role-based access controls for all clients.
- Implementing network segmentation to restrict access to the PI Servers from critical assets.
- Enabling encryption or VPN tunnels to protect data in transit.
- Applying timely patches and updates to OSIsoft software.
- Monitoring network traffic on port 545 for anomalous behavior indicative of threats.
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| :3128 | Tatsoft Default HTTP Proxy | TCP | Web Services | caution | 46.8k |
risk mix of the 8 listed
- caution100%
0 of 8 encrypted