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Cisco Network Security Solutions Frequently Asked Questions (FAQ)

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The Cisco Secure Network Foundation helps small and medium-sized businesses control costs in two ways: first, by avoiding the unnecessary costs associated with security breaches; and second, by using multifunction, affordable integrated security components that grow with businesses as their needs change. Integrated security simplifies network management and maintenance costs, reducing the total cost of network ownership. Network security breaches have both obvious and hidden costs. For example, many security breaches, such as relatively innocuous viruses, cause little damage, and the obvious costs associated with them are the time and resources spent cleaning them off infected business systems. Costs rise with the number of infected systems, making protection and quick detection a money-saving endeavor. Less obvious costs include work time lost while employees’ infected computers are being cleaned. Examples of hidden costs include lost opportunities, lost customers, diminished business reputations, or legal costs associated with security breaches. These costs, while less common, can be very large. Last year online crime cost British business. The Cisco Secure Network Foundation solution helps businesses avoid both the obvious and hidden costs associated with security breaches, reducing business risk, and increasing credibility and customer confidence. Small and medium-sized businesses do not have the staff resources or capital budgets to deploy and maintain complex security solutions. The Cisco Secure Network Foundation is secure, reliable, and simple, reducing their total cost of network ownership so organizations can focus on their business, not on their networks. It easily adapts to changing business needs and security conditions, making sure costs stay in line with business growth.

ScanSafe Web Security (1) Analyzes every web request to determine whether content is malicious, inappropriate, or acceptable, (2) Offers granular control over all web content, including SSL-encrypted communications, (3) Extends real-time protection and policy enforcement to employees wherever or however the Internet is accessed, and (4) Helps ensure highly secure email communications by blocking unwanted and malicious emails, while protecting confidential data.

Cisco AnyConnect Secure Mobility Solution (1) Provides an intelligent, smooth, and reliable connectivity experience, (2) Is ideal for companies that want to give users a choice of how, when, where, and on what device they access their information, (3) Cisco AnyConnect Version 2.5, with ASA 5500 Series Adaptive Security Appliances at the headend, provides remote-access connectivity policy enforcement that is context-aware, comprehensive, and preemptive, and (4) Cisco IronPort S-Series Web Security Appliances apply context-aware policy, including enforcing acceptable use and protection from malware for all users.

Unauthorized access' is a very high-level term that can refer to a number of different sorts of attacks. The goal of these attacks is to access some resource that your machine should not provide the attacker. For example, a host might be a web server, and should provide anyone with requested web pages. However, that host should not provide command shell access without being sure that the person making such a request is someone who should get it, such as a local administrator.

Important terms used for describing how data is stored, processed or transmitted to other locations: (1) Confidentiality, in terms of selecting who or what is allowed access to data and systems. This is achieved through encryption and access control systems. Even knowledge of the existence of data, rather than the information that it contains, may be of significant value to an eavesdropper, (2) The integrity of data, where modification is allowed only by authorized persons or organizations. The modifications could include any changes such as adding to, selectively deleting from, or even changing the status of a set of data, (3) The freshness of data contained in messages. An attacker could capture part or all of a message and re-use it at a later date, passing it off as a new message. Some method of incorporating a freshness indicator (e.g. a time stamp) into messages minimizes the risk of this happening, (4) The authentication of the source of information, often in terms of the identity of a person as well as the physical address of an access point to the network such as a workstation, and (5) The availability of network services, including security procedures, to authorized people when they are needed.

Securing and operating todays complex systems is challenging and demanding. Mission and operational requirements to deliver services and applications swiftly and securely have never been greater. Organizations, having invested precious resources and scarce skills in various necessary security efforts such as risk analysis, certification, accreditation, security architectures, policy development, and other security efforts, can be tempted to neglect or insufficiently develop a cohesive, well-though out operational security testing program.

Look at the big picture. The results of routine testing may indicate that an organization should readdress its systems security architecture. Some organizations may need to step back and undergo a formal process of identifying the security requirements for many of its systems, and then begin a process of reworking its security architecture accordingly. This process will result in increased security inefficiency of operations with fewer costs incurred from incident response operations.

One form of attack on computing systems connected to the Internet is eavesdropping on network connections to obtain login ids and passwords of legitimate users [RFC 1704]. Bellcore's S/KEY(TM) one-time password system was designed to counter this type of attack, called a replay attack [RFC 1760]. Several one-time password implementations compatible with Bellcore's S/KEY (TM) system exist. These implementations are increasingly widely deployed in the Internet to protect against passive attacks.

Cisco ASA 5500 Series Adaptive Security Appliances also provide (1) Adaptable architecture for rapid and customized security services deployment, (2) Advanced intrusion prevention services that defend against a broad range of threats, and (3) Highly secure remote access and unified communications to enhance mobility, collaboration, and productivity.

Network administrators can run the grep command against configuration files pulled from routers and firewalls and stored in local directory of their workstation (UNIX or Windows), or use grep statement build into Cisco IOS or ASA. For example, suppose the auditor wants to check the configuration for all telnet statements. The network administrator can run show running-config grep telnet and look through each entry (or without grep, just using include sh run i telnet), filter out addresses and send output to auditor.