Is port 42 (WINS / nameserver) dangerous?

Port 42 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 42 be open on my firewall?

Port 42 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 42 use?

Port 42 (WINS / nameserver) uses the TCP/UDP transport protocol and falls under the DNS category.

:42 (TCP/UDP)

WINS / nameserver

Medium Risco

TCP/UDP — DNS

Visão geral da porta

Número de porta 42

Nome do serviço WINS / nameserver

Protocolo de transporte TCP/UDP

Categoria DNS

Risco de segurança Medium

Intervalo de portas Conhecidas (0-1023)

O que é a porta 42?

Originally assigned as the Host Name Server protocol on ARPANET, port 42 was later repurposed by Microsoft for Windows Internet Name Service (WINS), which resolves NetBIOS names to IP addresses. WINS is a legacy name resolution system superseded by DNS and Active Directory. Exposure of WINS on the internet poses reconnaissance and potential exploitation risks.

TCP/UDP DNS

Considerações de segurança

A porta 42 (WINS / nameserver) é classificada como risco médio. Embora este serviço seja comumente exposto, considere usar alternativas criptografadas quando disponíveis.

Recomendação: Mantenha o serviço atualizado. Monitore os logs em busca de atividades incomuns.

Portas relacionadas — DNS

53 DNS 101 NIC Host Name 202 AT-NBP 206 AT-ZIS 558 SDNSKMP 634 GINAD 853 DNS over TLS 953 RNDC

Termos relacionados

A Record AAAA Record Authoritative DNS Server CNAME Record DNS DNS Resolver