Is port 1998 (Cisco X.25) dangerous?

Port 1998 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 1998 be open on my firewall?

Port 1998 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 1998 use?

Port 1998 (Cisco X.25) uses the TCP transport protocol and falls under the System & Infrastructure category.

:1998 (TCP)

Cisco X.25

Low Risque

TCP — System & Infrastructure

Aperçu du port

Numéro de port 1998

Nom du service Cisco X.25

Protocole de transport TCP

Catégorie System & Infrastructure

Risque de sécurité Low

Plage de ports Enregistré (1024-49151)

Qu'est-ce que le port 1998?

Port 1998 is used by Cisco for X.25 service access in IOS-based routers. X.25 is a legacy packet-switched WAN protocol that was widely used before Frame Relay and modern broadband. This port appears in legacy Cisco router configurations that still support X.25 connectivity.

TCP System & Infrastructure

Considérations de sécurité

Le port 1998 (Cisco X.25) 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