Chapter 1 Cisco SDM Express
Supplementary Help
widely used for router monitoring, and frequently for router configuration changes. Version 1 of SNMP, however, which is the most commonly used, is often a security risk for the following reasons:
•It uses authentication strings (passwords) called community strings which are stored and sent across the network in plain text.
•Most SNMP implementations send those strings repeatedly as part of periodic polling.
•It is an easily spoofable,
Because SNMP can be used to retrieve a copy of the network routing table and sensitive network information, we recommend disabling SNMP if your network does not require it. Cisco SDM Express will initially request to disable SNMP.
The configuration that will be delivered to the router to disable SNMP is as follows:
no
Disable Finger Service
Cisco SDM Express disables the finger service whenever possible. Finger is used to learn which users are logged into a network device. Although this information is often not highly sensitive, it can sometimes be useful to an attacker.
In addition, the finger service can be used in a specific type of
The configuration that will be delivered to the router to disable the Finger service is as follows:
no service finger
You can undo this fix using the SDM Security Audit feature. To learn how, For more information, click Cisco Router and Security Device Manager.
Disable PAD Service
Cisco SDM Express disables all packet assembler/disassembler (PAD) commands and connections between PAD devices and access servers whenever possible.
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