Contents
What is a firewall and why is it used?
A firewall is a security device — computer hardware or software — that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access to the private data on your computer.
What is the difference between firewall and proxy servers?
Firewall can monitor and filter all the incoming and outgoing traffic on a given local network. Proxy server connects an external client with a server to communicate with each other. It blocks connections from unauthorised network. It is used to protect an internal network against attacks .
What makes a Cisco firewall a secure network?
Secure network operations are a substantial topic. Although most of this document is devoted to the secure configuration of a Cisco firewall device, configurations alone do not completely secure a network. The operational procedures in use on the network contribute as much to security as the configuration of the underlying devices.
What are the different types of Cisco firewalls?
Cisco firewall devices, specifically the ASA 5505, 5510, 5520, and 5540 models, can use two types of Security Services Modules (SSMs), which provide additional security functionality. The AIP-SSM provides intrusion detection system (IDS)/intrusion protection system (IPS) features. The CSC-SSM operates as a content scanning and filtering module.
What does the console port on a Cisco firewall do?
On Cisco firewall devices, the console port is an asynchronous line that can be used for local and remote access to a device. One must be aware that the console port on Cisco firewall devices has special privileges.
Is the data plane included in Cisco firewall?
The data plane does not include traffic that is sent to the local Cisco firewall device. In addition to providing configuration details, this document serves primarily as a best practices guide. Therefore, security concepts will be recommended, although the exact configuration details may not be provided.