Chapter 1 Cisco SDM Express
Supplementary Help
You can undo this fix using the Cisco SDM Security Audit feature. To learn how, see the Security Audit online help in Cisco SDM. For more information, click Cisco Router and Security Device Manager.
Enable Netflow Switching
Cisco SDM Express enables Netflow switching whenever possible. Netflow switching is a Cisco IOS feature that enhances routing performance while using Access Control Lists (ACLs) and other features that create and enhance network security. Netflow identifies flows of network packets based on the source and destination IP addresses and TCP port numbers. Netflow then can use just the initial packet of a flow for comparison to ACLs and for other security checks, rather than having to use every packet in the network flow. This enhances performance, allowing you to make use of all of the router security features.
The configuration that will be delivered to the router to enable Netflow is as follows:
ip
You can undo this fix using the Cisco SDM Security Audit feature. To learn how, see the Security Audit online help in Cisco SDM. For more information, click Cisco Router and Security Device Manager.
Enable TCP Keepalives for Inbound Telnet Sessions
Cisco SDM Express enables TCP keepalive messages for both inbound and outbound Telnet sessions whenever possible. Enabling TCP keepalives causes the router to generate periodic keepalive messages, letting it detect and drop broken Telnet connections.
The configuration that will be delivered to the router to enable TCP keepalives for inbound Telnet sessions is as follows:
service
You can undo this fix using the Cisco SDM Security Audit feature. To learn how, see the Security Audit online help in Cisco SDM. For more information, click Cisco Router and Security Device Manager.
| Cisco SDM Express |
