Port 705AgentX

AgentX connects SNMP master agents with extensible subagents, normally over local or private TCP connections.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 5/10
lookups: 0

also known as Agent Extensibility Protocol

Technical Details

what runs on :705

AgentX is a session-oriented protocol between an SNMP master agent and subagents. A subagent opens a session with the master, registers MIB regions, and exchanges request, response, registration, and SET-related PDUs. The protocol uses a binary, network-byte-order framing format with a fixed header containing version, PDU type, flags, session, transaction, packet, and payload-length fields. IANA lists both TCP and UDP for this assignment, although normal AgentX deployments use TCP on port 705; SNMP itself commonly uses UDP 161 for queries and UDP 162 for traps.

Security Information

exposure of :705

risk score

5/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

network services averages 3.6 across 707 ports — this one sits 1.4 above.

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

AgentX has no encryption or general-purpose authentication in its basic protocol. It is intended for trusted local or management-network communication, so exposing it to the public Internet can allow unauthorized parties to query subagent data or perform write operations supported by the SNMP implementation. Restrict port 705 with host or network access controls and use the master agent's local transport where available.

Record

iana registry entry

port: :705
service: AgentX
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 5/10caution
category: Network Services System
usage: AgentX is the SNMP Agent Extensibility Protocol, used by a master SNMP agent to communicate with subagents that provide additional MIB data and operations. Engineers commonly encounter it on hosts running extensible SNMP daemons; port 705 is normally kept local or restricted to an internal management network.
lookups: 0rank 994
added: 2026-08-24
updated: 2026-08-24
references: IANA service name registry — port 705

Something wrong?

This record is maintained by the engineers who use port 705. 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 2026-08-24.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 707 in network services →

the 8 most looked-up other ports in network services — 707 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:6543	Jetnet	UDP	Network Services	caution	65.3k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :705AgentX

Technical Details

Security Information

Related Ports

Port 705AgentX