Is port 504 (Citadel) dangerous?

Port 504 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 504 be open on my firewall?

Port 504 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 504 use?

Port 504 (Citadel) uses the TCP transport protocol and falls under the Messaging category.

:504 (TCP)

Citadel

Medium Risiko

TCP — Messaging

Ikhtisar Port

Nomor Port 504

Nama Layanan Citadel

Protokol Transport TCP

Kategori Messaging

Risiko Keamanan Medium

Rentang Port Well-Known (0-1023)

Apa itu Port 504?

Port 504 is assigned to Citadel, an open-source groupware and messaging server providing email, calendaring, and bulletin board services.

TCP Messaging

Pertimbangan Keamanan

Port 504 (Citadel) diklasifikasikan sebagai risiko sedang. Meskipun layanan ini umumnya diekspos, pertimbangkan untuk menggunakan alternatif terenkripsi jika tersedia.

Rekomendasi: Jaga layanan tetap diperbarui. Pantau log untuk aktivitas yang tidak biasa.

Port Terkait — Messaging

18 MSP 87 ttylink / link 98 TACNews 99 Metagram 119 NNTP 169 SEND 194 IRC 218 MPP

Istilah Terkait

ARP FTP HTTP ICMP IMAP NTP