Is port 71 (NETRJS-1) dangerous?

Port 71 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 71 be open on my firewall?

Port 71 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 71 use?

Port 71 (NETRJS-1) uses the TCP/UDP transport protocol and falls under the System & Infrastructure category.

:71 (TCP/UDP)

NETRJS-1

Low Risque

TCP/UDP — System & Infrastructure

Aperçu du port

Numéro de port 71

Nom du service NETRJS-1

Protocole de transport TCP/UDP

Catégorie System & Infrastructure

Risque de sécurité Low

Plage de ports Bien connu (0-1023)

Qu'est-ce que le port 71?

NETRJS-1 through NETRJS-4 (ports 71-74) were assigned for the Remote Job Entry service used on the original ARPANET to submit batch jobs to remote mainframe computers. Defined in RFC 740, NETRJS allowed time-sharing users to submit card-image job streams to a remote server.

TCP/UDP System & Infrastructure

Considérations de sécurité

Le port 71 (NETRJS-1) est classifié comme risque faible. Ce service utilise le chiffrement ou présente une surface d'attaque minimale, le rendant relativement sûr à exposer.

Recommandation : Les pratiques de sécurité standard s'appliquent. Maintenez les logiciels à jour et surveillez les accès.

Ports associés — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Termes associés

Bandwidth Latency Packet Loss Ping Throughput ASN