Port 8443HTTPS (alternate port)

Port 8443 commonly serves HTTPS web interfaces, including application servers and management consoles; the IANA label is PCsync HTTPS.

inWeb Services

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

also known as pcsync-https, Tomcat HTTPS

1 other service is registered on port 8443. compare all 2 →

Technical Details

what runs on :8443

The IANA assignment is PCsync HTTPS, but port numbers do not identify the application: 8443 is widely used as an alternate HTTPS port. A typical TCP listener begins with a TLS handshake, then carries HTTP inside the encrypted connection; Tomcat commonly uses 8443 for a configured HTTPS connector. The registry also lists UDP, but UDP/8443 is not a universal HTTPS service—QUIC/HTTP/3 can use UDP when a server is configured for it. There is no single application-level protocol or framing guaranteed by this port.

Security Information

exposure of :8443

risk score

5/ 10caution

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

web services averages 3.1 across 221 ports — this one sits 1.9 above.

in transit

encrypted

payloads are protected on the wire

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 8443 listener may be an ordinary web application or a sensitive management console. Identify the service and its authentication requirements, keep it patched, and restrict administrative interfaces to trusted networks; TLS protects traffic in transit but does not make an exposed or vulnerable application safe.

Record

iana registry entry

port: :8443
service: HTTPS (alternate port)
transport: TCPUDP
encryption: tls / encrypted
assignment: iana registered
risk: 5/10caution
category: Web Services
usage: IANA labels this service PCsync HTTPS, but the registrant is not recorded. In practice, 8443 is widely used for HTTPS web interfaces, including Tomcat deployments and product or management consoles configured away from the usual port 443.
lookups: 0rank 993
added: 2026-10-14
updated: 2026-10-14
references: IANA service name registry — port 8443

Something wrong?

This record is maintained by the engineers who use port 8443. 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 2026-10-14.

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

Related Ports

all 221 in web services →

the 8 most looked-up other ports in web services — 221 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:80	HTTP	TCPUDP	Web Services	caution	67.3k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :8443HTTPS (alternate port)

Technical Details

Security Information

Related Ports

Port 8443HTTPS (alternate port)