Is port 63 (Whois++) dangerous?

Port 63 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Should port 63 be open on my firewall?

Port 63 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 63 use?

Port 63 (Whois++) uses the TCP transport protocol and falls under the Other category.

:63 (TCP)

Whois++

Low Risco

TCP — Other

Visão geral da porta

Número de porta 63

Nome do serviço Whois++

Protocolo de transporte TCP

Categoria Other

Risco de segurança Low

Intervalo de portas Conhecidas (0-1023)

O que é a porta 63?

Whois++ was an extended version of the WHOIS protocol designed to provide richer directory queries across distributed databases. It was standardized in RFC 1834 and RFC 1835 as an improvement over the basic WHOIS on port 43. The service never gained widespread adoption and is considered obsolete today.

TCP Other

Considerações de segurança

A porta 63 (Whois++) é classificada como baixo risco. Este serviço usa criptografia ou tem uma superfície de ataque mínima, tornando-o relativamente seguro para expor.

Recomendação: Aplique práticas de segurança padrão. Mantenha o software atualizado e monitore o acesso.

Portas relacionadas — Other

35 Private Printer Server 43 WHOIS 75 Private Dial-Out Service 78 VetTCP 91 MIT-DOV 92 NPP 104 DICOM 105 CCSO Nameserver

Termos relacionados

ASN BGP Hijack Data Center Domain Name Dual Stack Internet Exchange Point (IXP)