Download Network Security: A Practical Approach (The Morgan Kaufmann by Jan L. Harrington PDF
By Jan L. Harrington
Community safeguard is a accomplished source written for an individual who plans or implements community safety features, together with managers and practitioners. It bargains a useful twin point of view on safety: how your community seems to hackers who are looking to get within, and the way you want to procedure it at the inside of to maintain them at bay.You get the entire hands-on technical recommendation you must be triumphant, but additionally higher-level administrative tips for constructing an efficient defense coverage. there is no such factor as absolute defense, yet, because the writer sincerely demonstrates, there's a large distinction among the security provided via regimen reliance on third-party items and what you could in attaining by means of actively making trained judgements. you are going to discover ways to do exactly that with this book's exams of the dangers, rewards, and trade-offs comparable enforcing safety features. + is helping you notice via a hacker's eyes so that you could make your community extra secure.+ presents technical recommendation that may be utilized in any surroundings, on any platform, together with aid with intrusion detection platforms, firewalls, encryption, anti-virus software program, and electronic certificates.+ Emphasizes a variety of administrative concerns, together with safety rules, person administration, and regulate of providers and devices.+ Covers strategies for boosting the actual safety of your platforms and network.+ Explains how hackers use information-gathering to discover and take advantage of safeguard flaws.+ Examines the best how you can hinder hackers from gaining root entry to a server.+ Addresses Denial of provider assaults, "malware," and spoofing.+ contains appendices overlaying the TCP/IP protocol stack, recognized ports, and trustworthy resources for safety warnings and updates.
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Extra info for Network Security: A Practical Approach (The Morgan Kaufmann Series in Networking)
Example text
4. Physical security audit: The audit team looks at protections that involve physical computer security, such as locked doors and their access mechanisms. 5. Network configuration audit: The audit team compares documentation of the configuration of the network with the results of automated network discovery tools to determine if the organization really knows what devices are on the network. 6. Penetration testing: The audit team uses manual and automated methods in attempts to crack through the network’s defenses and to gain access to both servers and workstations.
The following discussion therefore focuses on the actions of firewall software rather than specific hardware. In addition to blocking potentially dangerous traffic, firewalls usually log traffic, either all traffic or blocked traffic (depending on software configuration). Such logs contain the source IP address of the blocked packet, the destination address, the date and time the packet arrived at the firewall, the port for which the packet was destined, and the disposition of the packet (transmitted or blocked).
However, there are also significant risks: The security company you choose could go out of business, leaving your organization extremely vulnerable. If you are going to outsource, then you may want to keep the management of your security policy in-house; you can outsource the implementation, such as security auditing/vulnerability testing and ongoing monitoring. You can even outsource mid-level management. But you need to remember that the ultimate responsibility and authority should remain internal to your organization.