Port 26133Symbolic Computation Software Composability Protocol (SCSCP)

SCSCP lets computer algebra systems call remote symbolic-computation procedures using OpenMath objects.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as scscp, OpenMath SCSCP

Technical Details

what runs on :26133

SCSCP is an application-level remote procedure call protocol for symbolic computation. A client connects to a server over TCP, exchanges protocol/version information, and sends procedure calls and results as OpenMath objects, commonly using XML encoding; replies indicate completion or termination. Port 26133 is the registered service port. Although IANA lists TCP and UDP, deployed SCSCP is TCP-oriented; UDP support should not be assumed. The protocol does not provide encryption by default.

Security Information

exposure of :26133

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,947 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

An exposed SCSCP server may let remote clients invoke computational procedures, potentially consuming substantial CPU or memory or reaching functionality the server makes available. Keep it behind trusted network boundaries and apply access controls and resource limits; use a secure tunnel or other protected transport if traffic crosses an untrusted network.

Record

iana registry entry

port: :26133
service: Symbolic Computation Software Composability Protocol (SCSCP)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: This port is used by SCSCP servers that let computer algebra clients request remote computations, particularly in GAP-based deployments. The registry lists both TCP and UDP, but SCSCP is typically encountered as a TCP service and is uncommon on general-purpose networks.
lookups: 0rank 993
added: 2026-10-19
updated: 2026-10-19
references: IANA service name registry — port 26133

Something wrong?

This record is maintained by the engineers who use port 26133. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-19.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :26133Symbolic Computation Software Composability Protocol (SCSCP)

Technical Details

Security Information

Related Ports

Port 26133Symbolic Computation Software Composability Protocol (SCSCP)