CISCO-TELNET-SERVER-MIB

All MIBs › CISCO-TELNET-SERVER-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2007-05-08

Category: Cisco Devices, Device Management, Web and Application Servers

Description: Manages Cisco Telnet server sessions including active connections, authentication state, and session configuration.

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What Is CISCO-TELNET-SERVER-MIB?

CISCO-TELNET-SERVER-MIB is a Cisco enterprise MIB for managing and monitoring the device's built-in Telnet server, which allows remote command-line login sessions over the network. It exposes a global Telnet activation setting, notification enables for session start/end/denial/failure events, and a sessions table tracking each active session's ID, description, client address and address type, and associated process ID. Its monitoring value is centered on remote-access session status and process-level software state: administrators track active Telnet sessions, their client source addresses, and PIDs to detect unauthorized or excessive login activity, and watch session-denied/failure notifications to catch authentication problems or connection-limit issues. It relies on standard Cisco enterprise conventions and complements comparable SSH/console session MIBs. It is deployed on Cisco routers and switches wherever Telnet remote management access is enabled and needs auditing. Engineers can download the CISCO-TELNET-SERVER-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-TELNET-SERVER-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco router
Cisco switch

Monitoring Examples

An administrator would walk ctsSessionsTable/ctsSessionsEntry to list active sessions by ctsSessionID, checking ctsSessionsClientAddress and ctsSessionClientAddressType to identify who is connected, and ctsSessionPID to correlate with device process state. Monitoring ctsSessionDeniedNotifEnable and ctsSessionFailureNotifEnable-triggered traps would reveal repeated failed login attempts suggesting a brute-force attempt. An unexpected session appearing from an unrecognized ctsSessionsClientAddress would indicate unauthorized Telnet access to the device.

What Can Be Monitored

Telnet server activation state
active session count and details (ID, client address, PID)
session started/ended/denied/failure notifications

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType
InetPortNumber

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoTelnetServerMIB	1.3.6.1.4.1.9.9.630			MIB module for displaying and configuring Telnet related features in a device. Telnet is a program to log into another computer over a network, to execute commands in a remote machine.
ciscoTelnetServerMIBNotifs	1.3.6.1.4.1.9.9.630.0
NTF ctsSessionEnded	1.3.6.1.4.1.9.9.630.0.1			This notification signifies that the agent entity has detected end of a telnet session.
NTF ctsSessionStarted	1.3.6.1.4.1.9.9.630.0.2			This notification is sent when the agent entity has accepted a new telnet session.
NTF ctsSessionDenied	1.3.6.1.4.1.9.9.630.0.3			This notification signifies that the agent has refused a telnet session.
NTF ctsSessionLoginFailure	1.3.6.1.4.1.9.9.630.0.4			This notification is sent when the agent entity has detected attempt to login with wrong credentials.
ciscoTelnetServerMIBObjects	1.3.6.1.4.1.9.9.630.1
ciscoTelnetServerConfigObjects	1.3.6.1.4.1.9.9.630.1.1
T/F ctsTelnetActivation	1.3.6.1.4.1.9.9.630.1.1.1	TruthValue	read-write	This object specifies whether the Telnet access service on the device is enabled.
T/F ctsSessionEndedNotifEnable	1.3.6.1.4.1.9.9.630.1.1.2	TruthValue	read-write	This object controls whether the system produces ctsSessionEnded notifications. A 'false' value will prevent ctsSessionEnded notifications from being generated by this system.
T/F ctsSessionStartedNotifEnable	1.3.6.1.4.1.9.9.630.1.1.3	TruthValue	read-write	This object controls whether the system produces ctsSessionStarted notifications. A 'false' value will prevent ctsSessionStarted notifications from being generated by this system.
T/F ctsSessionDeniedNotifEnable	1.3.6.1.4.1.9.9.630.1.1.4	TruthValue	read-write	This object controls whether the system produces ctsSessionDenied notifications. A 'false' value will prevent ctsSessionDenied notifications from being generated by this system.
T/F ctsSessionFailureNotifEnable	1.3.6.1.4.1.9.9.630.1.1.5	TruthValue	read-only	This object controls whether the system produces ctsSessionLoginFailure notifications. A 'false' value will prevent ctsSessionLoginFailure notifications from being generated by this system.
ciscoTelnetServerStatusObjects	1.3.6.1.4.1.9.9.630.1.2
ctsSessionsTable	1.3.6.1.4.1.9.9.630.1.2.1		not-accessible	This table provides data for each telnet session on an entity capable of running telnet server.
ctsSessionsEntry	1.3.6.1.4.1.9.9.630.1.2.1.1		not-accessible	An entry (conceptual row) in the ctsSessionsTable. This entry lists the data for the telnet session on the entity running the telnet server. An entry in the ctsSessionTable, that provides detailed information about all the existing telnet sessions on the device. An entry will be created for every telnet session established on the device. The entry will be removed upon termination of the telnet session.
U32 ctsSessionID	1.3.6.1.4.1.9.9.630.1.2.1.1.1	Unsigned32	not-accessible	An arbitrary index that uniquely identifies a Telnet Session.
STR ctsSessionDescription	1.3.6.1.4.1.9.9.630.1.2.1.1.2	SnmpAdminString	read-only	Human readable description about the session.
IPt ctsSessionClientAddressType	1.3.6.1.4.1.9.9.630.1.2.1.1.3	InetAddressType	read-only	The type of Internet address of the client that requested this session.
IP ctsSessionsClientAddress	1.3.6.1.4.1.9.9.630.1.2.1.1.4	InetAddress	read-only	The Internet address of the client that requested this session. The type of this address is determined by the value of the ctsSessionClientAddressType object.
U32 ctsSessionPID	1.3.6.1.4.1.9.9.630.1.2.1.1.5	Unsigned32	read-only	The object indicates the process ID of the process serving this telnet session on the device.
STR ctsSessionUserID	1.3.6.1.4.1.9.9.630.1.2.1.1.6	SnmpAdminString	read-only	The object indicates user name associated with this telnet session.
INE ctsSessionTcpPort	1.3.6.1.4.1.9.9.630.1.2.1.1.7	InetPortNumber	read-only	The TCP source port number of the remote client.
ciscoTelnetServerMIBConform	1.3.6.1.4.1.9.9.630.2
ciscoTelnetServerMIBCompliances	1.3.6.1.4.1.9.9.630.2.1
ciscoTelnetServerMIBCompliance	1.3.6.1.4.1.9.9.630.2.1.1			The compliance statement for SNMP Agents which implement this MIB.
ciscoTelnetServerMIBGroups	1.3.6.1.4.1.9.9.630.2.2
ctsMIBSessionsObjectGroup	1.3.6.1.4.1.9.9.630.2.2.1			This group of objects maintains informative data for each Telnet session on a device that runs Telnet Server.
ctsMIBNotificationGroup	1.3.6.1.4.1.9.9.630.2.2.2			This group contains notifications for this MIB.
ctsSessionNotifsControlGroup	1.3.6.1.4.1.9.9.630.2.2.3			A collection of objects providing configuration information applicable to all session notifications.

RFC description

Displays and configures Telnet server features and remote access settings on Cisco devices.

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Download CISCO-TELNET-SERVER-MIB

What Is CISCO-TELNET-SERVER-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description