Chapter 3 Setting Up the Sensor

Changing Web Server Settings

Step 8 Press Enter to apply the changes or enter no to discard them.

Changing Web Server Settings

Note The default web server port is 443 if TLS is enabled and 80 if TLS is disabled.

After you run the setup command, you can change the following web server settings: the web server port, whether TLS encryption is being used, the HTTP server header message, restriction of TLS client ciphers, web session inactivity timeout, and logging of web session inactivity timeouts.

HTTP is the protocol that web clients use to make requests from web servers. The HTTP specification requires a server to identify itself in each response. Attackers sometimes exploit this protocol feature to perform reconnaissance. If the IPS web server identified itself by providing a predictable response, an attacker might learn that an IPS sensor is present.

We recommend that you not reveal to attackers that you have an IPS sensor. Change the server-idto anything that does not reveal any information, especially if your web server is available to the Internet. For example, if you forward a port through a firewall so you can monitor a sensor remotely, you need to set the server-id.

The following options apply:

•enable-tls {false true}—Enables encryption (TLSv1) on the system. The default is enabled.

•enable-websession-inactivity-timeout-logging {false true}—Enables logging for web session inactivity timeouts. The default is disabled.

•port port_number—Specifies the port on which the web server listens for connections. The valid range is 1 to 65535. The default is 443.

•server-idserver_id—Specifies the textual message the web server returns in the HTTP Server header. The default is HTTP/1.1 compliant configurable-service.

•tls-client-ciphers-restriction {false true}—Enables the client to use only restricted mode ciphers; disabling allows all ciphers. The default is enabled. When IPS acts as a TLS client, you can configure restriciton on the TLS ciphers.

Note Changes take place for the next sessions only. The current web session is not affected.

When enabled, the client can use the following restricted ciphers:

–TLS_RSA_WITH_AES_128_CBC_SHA

–TLS_RSA_WITH_AES_256_CBC_SHA

–TLS_DHE_RSA_WITH_AES_128_CBC_SHA

–TLS_DHE_RSA_WITH_AES_256_CBC_SHA

When disabled, the client can use the following ciphers:

–TLS_DHE_RSA_WITH_AES_256_CBC_SHA256

–TLS_DHE_DSS_WITH_AES_256_CBC_SHA256

–TLS_DHE_RSA_WITH_AES_256_CBC_SHA

 

 

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Cisco Systems IPS4510K9 manual Changing Web Server Settings, When disabled, the client can use the following ciphers
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IPS4510K9 specifications

Cisco Systems has long been a leading player in network security, and its IPS (Intrusion Prevention System) series is a testament to its commitment to safeguarding digital environments. Among its notable offerings are the IPS4510K9 and IPS4520K9 models, both designed to provide advanced threat protection for mid-sized to large enterprise networks.

The Cisco IPS4510K9 and IPS4520K9 are distinguished by their cutting-edge features that help organizations defend against a myriad of cyber threats. These systems utilize a multi-layered approach to security, integrating intrusion prevention, advanced malware protection, and comprehensive visibility across the network.

One of the primary characteristics of the IPS4510K9 is its high performance. It boasts a throughput of up to 1 Gbps, making it suitable for environments that demand rapid data processing and real-time responses to threats. The IPS4520K9, on the other hand, enhances that capability with improved throughput of up to 2 Gbps, accommodating larger enterprises with heavier network traffic. These models are equipped with powerful processors that support complex signature matching and can intelligently distinguish between legitimate traffic and potential threats.

In addition to performance, both models are designed with scalability in mind. They can be easily integrated into existing Cisco infrastructures. This facilitates a seamless enhancement of security without causing significant interruptions to ongoing operations. Moreover, they offer flexible deployment options, allowing organizations to operate them inline or out of band depending on their specific needs.

The Cisco IPS4510K9 and IPS4520K9 leverage advanced detection technologies, utilizing a variety of signature types and heuristic analysis to detect known and unknown threats effectively. They are equipped with real-time alerting and reporting capabilities, giving security teams immediate visibility into potential breaches and enabling them to respond swiftly.

Furthermore, both models support a range of management options through the Cisco Security Manager, allowing for centralized administration, streamlined policy management, and enhanced monitoring capabilities. Automated updates ensure the systems remain current with the latest threat intelligence, vital for staying ahead of evolving cyber threats.

In summary, the Cisco Systems IPS4510K9 and IPS4520K9 represent powerful solutions for organizations seeking robust intrusion prevention capabilities. With their high performance, scalability, and advanced detection technologies, these systems are essential tools in the ever-changing landscape of cybersecurity, providing enterprises with the peace of mind needed to operate securely in today's digital world.
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