Cisco Systems OL-12172-01 manual An Inside User Visits a Web Server on the DMZ, 15-4

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Chapter 15 Firewall Mode Overview

Routed Mode Overview

2.The security appliance receives the packet and because it is a new session, the security appliance verifies that the packet is allowed according to the terms of the security policy (access lists, filters, AAA).

For multiple context mode, the security appliance first classifies the packet according to either a unique interface or a unique destination address associated with a context; the destination address is associated by matching an address translation in a context. In this case, the classifier “knows” that the DMZ web server address belongs to a certain context because of the server address translation.

3.The security appliance translates the destination address to the local address 10.1.1.3.

4.The security appliance then adds a session entry to the fast path and forwards the packet from the DMZ interface.

5.When the DMZ web server responds to the request, the packet goes through the security appliance and because the session is already established, the packet bypasses the many lookups associated with a new connection. The security appliance performs NAT by translating the local source address to 209.165.201.3.

6.The security appliance forwards the packet to the outside user.

An Inside User Visits a Web Server on the DMZ

Figure 15-3shows an inside user accessing the DMZ web server.

Figure 15-3

Inside to DMZ

Outside

209.165.201.2

10.1.2.110.1.1.1

Inside

DMZ

 

92403

User

Web Server

10.1.2.27

10.1.1.3

 

Cisco Security Appliance Command Line Configuration Guide

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OL-12172-01

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Contents IP Routing Support 15-1An Inside User Visits a Web Server 15-2An Outside User Visits a Web Server on the DMZ 15-3An Inside User Visits a Web Server on the DMZ 15-4An Outside User Attempts to Access an Inside Host 15-5DMZ User Attempts to Access an Inside Host 15-6Transparent Firewall Network Allowing Layer 3 TrafficAllowed MAC Addresses 15-7MAC Address vs. Route Lookups Passing Traffic Not Allowed in Routed Mode15-8 Transparent Firewall Guidelines Using the Transparent Firewall in Your Network15-9 Unsupported Features in Transparent Mode 15-10How Data Moves Through the Transparent Firewall 15-118shows an inside user accessing an outside web server 15-12An Inside User Visits a Web Server Using NAT 15-13An Outside User Visits a Web Server on the Inside Network 15-1415-15 11 Outside to Inside15-16

OL-12172-01 specifications

Cisco Systems OL-12172-01 is a pivotal component in the landscape of networking and telecommunications, particularly catering to the needs of businesses seeking robust and efficient networking solutions. This particular offering is part of Cisco's ongoing commitment to providing advanced networking technologies that enhance connectivity, security, and overall operational efficiency.

One of the main features of Cisco OL-12172-01 is its capability to support enterprise networking environments through highly scalable and flexible architecture. The device is designed to address the growing demands for bandwidth and connectivity in corporate networks, enabling seamless communication and data exchange among various devices and applications. With support for high-speed Ethernet connections, the OL-12172-01 can significantly improve the performance of network operations, ensuring minimal downtime and optimal user experiences.

Security is a hallmark of the Cisco OL-12172-01. The device comes equipped with advanced security protocols that protect sensitive data and mitigate the risks associated with network vulnerabilities. Features such as integrated firewall capabilities, Virtual Private Network (VPN) support, and intrusion prevention systems are vital in safeguarding corporate information against cyber threats. This ensures that businesses can operate confidently in a digital landscape laden with potential risks.

Another significant aspect of the OL-12172-01 is its compatibility with various Cisco technologies, enhancing its versatility. It integrates seamlessly with Cisco’s Software-Defined Networking (SDN) solutions, allowing for dynamic network management and automation. This adaptability means businesses can respond quickly to changing network demands and efficiently manage resources without incurring excessive costs.

The OL-12172-01 also boasts comprehensive management and monitoring tools. Through Cisco's management software, network administrators can easily configure, monitor, and troubleshoot their networks. These tools provide insight into network performance metrics, enabling proactive measures to ensure optimal functionality.

In summary, Cisco Systems OL-12172-01 is a feature-rich device designed for modern enterprise networking. With advanced security measures, high-speed connectivity, and compatibility with cutting-edge technologies, it empowers businesses to optimize their network infrastructure while maintaining high levels of protection. As organizations continue to evolve their IT landscapes, the OL-12172-01 remains a reliable solution for enhancing operational efficiency and safeguarding essential data.
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