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 Risiko

TCP — Other

Ikhtisar Port

Nomor Port 63

Nama Layanan Whois++

Protokol Transport TCP

Kategori Other

Risiko Keamanan Low

Rentang Port Well-Known (0-1023)

Apa itu Port 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

Pertimbangan Keamanan

Port 63 (Whois++) diklasifikasikan sebagai risiko rendah. Layanan ini menggunakan enkripsi atau memiliki permukaan serangan yang minimal, sehingga relatif aman untuk diekspos.

Rekomendasi: Terapkan praktik keamanan standar. Jaga perangkat lunak tetap diperbarui dan pantau akses.

Port Terkait — Other

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

Istilah Terkait

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