By Richard Deal

This booklet is a part of the Networking expertise sequence from Cisco Press, which deals networking execs priceless info for developing effective networks, knowing new applied sciences, and development winning careers.

Show description

Read Online or Download Cisco router firewall security PDF

Similar comptia books

CCSE NG: Check Point Certified Security Expert Study Guide

The ebook does an outstanding task of masking approximately 70 percentage of the particular examination. the opposite 30 percentage (SmartDefense) isn't even pointed out.

Managing TCP IP Networks: Techniques, Tools and Security

Dealing with TCP/IP Networks innovations, instruments and defense concerns Gilbert Held 4-Degree Consulting, Macon, Georgia, united states * specializes in the ideas, instruments, diagnostic trying out, and protection. * Addresses the sensible how you can deal with a TCP/IP community. * is helping readers to control and keep watch over operation and usage.

Network Security Policies and Procedures (Advances in Information Security)

Corporation community directors are pressured this present day to aggressively pursue a strong community defense regime. This e-book goals to provide the reader a powerful, multi-disciplinary knowing of the way to pursue this objective. This specialist quantity introduces the technical matters surrounding protection in addition to how protection regulations are formulated on the govt point and communicated during the association.

Java Security

The area vast net has turn into a advertisement venue for corporations, hence elevating the stakes for defense. an easy defense oversight can rate an organization thousands of greenbacks! Java is the main time-honored programming language on the net. Java safety promises the keys to retaining your website and combating a disastrous assault in your company.

Additional info for Cisco router firewall security

Sample text

Hackers typically use a repudiation attack when users are accessing web information. Hackers like to use Java or ActiveX scripts, port-scanning utilities, masquerading, and eavesdropping to carry out their repudiation attack. com, and others to generate garbage mail and execute a DoS attack against a company's e-mail server. Getting a free e-mail account from these systems is usually a simple process, with little identity proof required. This makes it easy for a hacker to get an e-mail account and hide his activities behind a cloud of anonymity.

Other types of attacks include exploiting weaknesses in operating systems and applications, such as buffer overflows, that can allow a hacker access without first authenticating. After a hacker has broken into one of your networking devices, he usually tries to raise his privilege level to the highest possible degree and then uses this account to break into other networking devices. He also might modify files on your resources or, in the worst possible scenario, erase everything on the disk drive and laugh as he tells his story to his friends.

With a DoS attack, a hacker attempts to deny legitimate traffic and user access to a particular resource, or, at the very least, reduce the quality of service for a resource. Many kinds of DoS attacks exist; the simplest to implement is a flood attack, in which the hacker overwhelms a device or network with a flood of ICMP packets. The next two sections cover some common DoS attacks, as well as methods used to prevent these kinds of attacks. Types of DoS Attacks Hackers can use many types of DoS attacks against your network.

Download PDF sample

Rated 4.57 of 5 – based on 16 votes