DFL260e-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DFL260e-MIB

Organization: D-Link Corporation

Last Updated: 2010-09-02

Category: Domain: Security, Technology: VPN, Vendor: DFL/Clavister

Description: Manages Clavister/DFL 260e security gateway firewall configuration, VPN, and traffic statistics.

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What Is DFL260e-MIB?

DFL260e-MIB is a vendor-specific MIB from D-Link Corporation for the DFL-260e NetDefend UTM firewall appliance (built on Clavister-derived firmware, as the hint notes, though the MODULE-IDENTITY itself is authored by D-Link), managing firewall/gateway performance and traffic statistics as described. It exposes system-level counters under dfl260eSystem (dfl260eSysCpuLoad, dfl260eSysForwardedBits/Packets, dfl260eSysBuffUse, dfl260eSysConns) and per-protocol-state gauges under dfl260eSysPerStateCounters (dfl260eSysPscTcpSyn/Open/Fin, dfl260eSysPscUdp, dfl260eSysPscIcmp), per-interface statistics via dfl260eIfStatsTable (including 64-bit dfl260eIfHCPktsInCnt/HCBitsOutCnt high-capacity counters), and application-layer gateway monitoring through dfl260eHttpAlgTable and dfl260eSmtpAlgTable (including SMTP DNS-blacklist stats). It depends only on standard SNMPv2-SMI/TC/CONF types and its own dfl260eMibModules registration tree, requiring no external MIB imports beyond the base SNMP framework. It is deployed on D-Link DFL-260e UTM security gateways handling firewall, VPN, and application-layer filtering in small/branch-office networks, and DFL260e-MIB SNMP monitoring is typically used to track CPU load, connection-state distribution, and per-interface throughput on the appliance.

IPNetwork Monitor allows you to monitor SNMP objects defined in DFL260e-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

  • D-Link DFL-260e NetDefend UTM firewall appliance

Monitoring Examples

An operator polls dfl260eSysCpuLoad and dfl260eSysConns to baseline appliance load, then checks dfl260eSysPerStateCounters for an unusual spike in dfl260eSysPscTcpSyn relative to dfl260eSysPscTcpOpen; a sustained high SYN count with low corresponding OPEN count would suggest a SYN-flood condition or half-open connection buildup against the firewall.

What Can Be Monitored

  • CPU load and connection buffer usage
  • per-protocol connection-state counters (SYN/OPEN/FIN/UDP/ICMP)
  • per-interface packet/bit counters (32-bit and 64-bit)
  • forwarded traffic totals
  • HTTP/SMTP ALG statistics
Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
enterprises

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using dfl260eSysForwardedBits OID:

Select a D-Link DFL-260e NetDefend UTM firewall appliance as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type dfl260eSysForwardedBits into the Find box to locate it in the OID tree, then select it and click OK. The number of bits forwarded through the gateway. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

D-Link DFL-260e UTM firewall system performance metrics including CPU, memory, and connection monitoring.

Start monitoring D-Link DFL-260e NetDefend UTM firewall appliance with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download DFL260e-MIB