Download e-book for iPad: A+ Technician's On-the-Job Guide to Networking by Curt Simmons

By Curt Simmons

ISBN-10: 007222777X

ISBN-13: 9780072227772

ISBN-10: 007223038X

ISBN-13: 9780072230383

This available quickly reference is the fitting on-the-job significant other, that includes easy-to-find details in a step by step, task-oriented structure. within, you’ll get lots of configuration and troubleshooting suggestions and suggestions, logically prepared by way of subject. With this functional guidebook available, you’ll have the capacity to diagnose and connect such a lot any community challenge speedy and simply.

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If you're ready, check the I Agree check box, and then click the Install button. 10. At the end of the installation, you will be asked to fill out a little survey. Select some answers and click the Finish button. 11. When prompted, you can opt to start ZoneAlarm by clicking the Yes button. < previous page page_156 next page > 45 46 < previous page Page 157 page_157 next page > TECH TALK Not Just a Firewall My favorite ''pet" firewall is ZoneAlarm, if you haven't guessed. Not only is it free in many applications, it has a superb ability to granularly control inbound and outbound traffic.

An error entry indicates that some kind of system event failed to occur or complete successfully. Linux systems log a wealth of information. Typically, a variety of log files are stored in /var/log/ directory, and sometimes monitoring these logs can be difficult < previous page page_161 next page > < previous page page_162 next page > Page 162 since they can be numerous and are essentially flat text files. Tools exist to ease the interpretation of these log files, and such a tool is recommended if you need to work with Linux log files on a regular basis.

The leftmost number always indicates the permissions granted to the owner of the file, the middle bit relates to the users who are in the same groups as the owner, and the rightmost bit pertains to all users other than those covered by the first two groups. This numerical code is made of four options. Read permission is indicated with 4, write with 2, execute with 1, and no access with 0. So, for example, if a user was assigned read and write permissions and all other users were denied access, the numeric value would be 600.

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A+ Technician's On-the-Job Guide to Networking by Curt Simmons


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