Port 1645SightLine

SightLine traffic for the service registered as sightline on TCP and UDP port 1645.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

1 other service is registered on port 1645. compare all 2 →

Technical Details

what runs on :1645

no technical write-up for :1645 yet

the handshake, the implementations you meet in the wild, the flags that matter. we have the registry entry — the detail comes from the engineers who run it.

add technical details

Security Information

exposure of :1645

risk score

1/ 10safe

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

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

no security notes recorded for :1645 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :1645
service: SightLine
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: TCP and UDP port 1645 is assigned to the SightLine service. IANA lists the registrant as "admin", with no registration date or additional notes; public deployment details are not established.
lookups: 0rank 994
added: 2026-09-11
updated: 2026-09-11
references: IANA service name registry — port 1645

Something wrong?

This record is maintained by the engineers who use port 1645. 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 2026-09-11.

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

browse categories →

ports registered around :1645, by lookups.

port	service	proto	category	risk	views
:1701	L2TP & L2F	UDP	Security	caution	15.1k
:1645	RADIUS Authentication (Cisco/Juniper)	TCPUDP	Security	caution	15.1k
:1646	RADIUS Accounting	TCPUDP	Security	caution	13.1k
:1581	MIL-STD-2045-47001 VMF	UDP	Security	caution	10.6k
:1677	Novell GroupWise	TCPUDP	Email	caution	7.5k
:1589	Cisco VQP / VMPS	UDP	Security	caution	6.2k
:1627	iSketch		Gaming	caution	4.5k
:1666	Perforce	TCP	File Transfer	caution	4.4k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :1645SightLine

Technical Details

Security Information

Related Ports

Port 1645SightLine