D-Link DSR-500N Router Manual PDF (Setup & Configuration Guide)

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Figure 109: Re mote Manage me nt from the WAN

9.1.3 CLI Access

In addition to the web -based GUI, the gateway supports SSH and Telnet

management for command -line interaction. The CLI login credentials are shared

with the GUI for administrator users.

To access the CLI, type “cli” in the SSH or

console prompt and login with administrator user credentials.

9.2 SNMP Configuration

Tools > Admin > SNMP

SNMP is an additional management tool that is useful when multiple routers in a

network are being managed by a central Master system. When an external SNMP

manager is provided

with this router’s Management Information Base (MIB) file, the

manager can

update the router’s hierarchal variables to view or update configuration

parameters. The router as a managed device has an SNMP agent that allows the MIB

configuration variables to be accessed by the Master (the SNMP manager). The

Access Control List on the router identifies managers in the network that have read -

only or read-write SNMP credentials. The Traps List outlines the port over which

notifications from this router are provided to the SNMP community (managers) and

also the SNMP version (v1, v2c, v3) for the trap.

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Figure 110: SNMP Use rs, Traps, and Acce ss Control

Tools > Admin > SNMP System Info

The router is identified by an SNMP manager via the System Information. The

identifier settings The SysName set here is also used to identify the router for SysLog

logging.

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Figure 111: SNMP syste m informatio n for this route r

9.3

Configuring Time Zone and NTP

Tools > Date and Time

You can configure your time zone, whether or not to adjust for Daylight Savings

Time, and with which Network Time Protocol (NTP) server to synchronize the date

and time. You can choose to set Date and Time manually, which will store the

information on

the router’s real time clock (RTC).

If the router has access to the

internet, the most accurate mechanism to set the router time is to enable NTP server

communication.



Accurate date and time on the router is critical for firewall schedules, Wi-Fi power

s aving support to disable APs at certain times of the day, and accurate logging.

Please follow the steps below to configure the NTP server:

1.

Select

the router’s

time zone, relative to Greenwich Mean Time (GMT).

2.

If supported for your region, click to Enable Daylight Savings.

3.

Determine whether to use default or custom Network Time Protocol (NTP) servers. If

custom, enter the server addresses or FQDN.

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Figure 112: Date , Time , and NTP se rve r se tup

9.4 Log Configuration

This router allows you to capture log messages for traffic through the firewall, VPN,

and over the wireless AP. As an administrator you can monitor the type of traffic that

goes through the router and also be notified of potential attacks or errors when they

are detected by the router. The following sections describe the log configuration

settings and the ways you can access these logs.

9.4.1

Defining What to Log

Tools > Log Settings > Logs Facility

The Logs Facility page allows you to determine the granularity of logs to receive

from the router. There are three core components of the router, referred to as

Facilities:

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

Kernel: This refers to the Linux kernel. Log messages that correspond to this

facility would correspond to traffic through the firewall or network stack.



System: This refers to application and management level features available on this

router, including SSL VPN and administrator changes for managing the unit.



Wireless: This facility corresponds to the 802.11 driver used for providing AP

functionality to your network.



Local1-UTM: This facility corresponds to IPS (Intrusion Prevention System)

which helps in detecting malicious intrusion attempts from the WAN.

For each facility, the following events (in order of severity) can be logged:

Emergency, Alert, Critical, Error, Warning, Notification, Information, Debugging.

When a particular severity level is selected, all events with severity equal to and

greater than the chosen severity are captured. For example if you have configured

CRITICAL level logging for the Wireless facility, then 802.11 logs with severities

CRITICAL, ALERT, and EMERGENCY are logged. The severity levels available

for logging are:



EMERGENCY: system is unusable



ALERT: action must be taken immediately



CRITICAL: critical conditions



ERROR: error conditions



WARNING: warning conditions



NOTIFICATION: normal but significant condition



INFORMATION: informational



DEBUGGING: debug-level messages

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