Port 665Sun DR
Sun Remote Dynamic Reconfiguration (sun-dr) allows administrators to dynamically modify the hardware configuration of certain Sun Microsystems servers without shutting them down. This management protocol aids in reallocating resources or replacing hardware to ensure optimal uptime and minimal service disruption..
- transport
- tcp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 7,797
single transport
payload readable on path
used by convention
caution
rank 657 of 993 · top 66%
Technical Details
what runs on :665Sun Remote Dynamic Reconfiguration (sun-dr) is a proprietary protocol developed by Sun Microsystems designed to facilitate the live reconfiguration of system hardware components, primarily on SPARC-based servers. It plays a crucial role in enterprise environments where minimal downtime is critical by allowing CPUs, memory boards, and I/O components to be added or removed dynamically.
This protocol functions by establishing a dedicated management channel between a management console and the system controller. Through this communication, system administrators can command components to be logically disconnected and powered off before their physical removal, or powered on and logically integrated after insertion.
Port 665 enables the network-based interfaces for this communication. Since this is an older, largely proprietary service, availability today may be limited mostly to legacy hardware still maintained by some enterprise users. It is strongly associated with specialized Sun management utilities.
Security Information
exposure of :665risk 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:
- Unauthorized access: If sun-dr is exposed to untrusted networks, attackers might gain control over hardware reconfiguration functions.
- Lack of encryption: Since the protocol does not natively provide encryption, sensitive management commands can be intercepted via man-in-the-middle (MITM) attacks.
- Exploitation of implementation flaws: Unpatched vulnerabilities in the management service could allow privilege escalation or denial of service.
Common Mitigations:
- Restrict network access: Isolate DR interfaces on management VLANs or dedicated secure networks.
- Use firewall filtering: Explicitly block port 665 from untrusted sources.
- Employ encrypted tunnels: Wrap management traffic using secure VPNs or SSH port forwarding.
- Apply vendor patches: Ensure the server's firmware and software are regularly updated.
- Implement strong authentication: Require robust credentials and, where possible, multifactor authentication for access.
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risk mix of the 8 listed
- caution100%
0 of 8 encrypted