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TcL Scripting for Cisco IOS by - CCIE No. 7016 Arvind Durai, - CCIE No. 7050 Raymond Blair, John Lautmann

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Chapter 7. Security in Tcl Scripts

This chapter covers the following topics:

Introduction to PKI Infrastructure

Using Digital Signatures to Sign a Tcl Script

Tcl Script-Failure Scenario

Scaling Tcl Script Distribution

From the early days of programming, those with nefarious intent have attempted—and in many cases successfully integrated—additional code into programs that have caused serious consequences to the unsuspecting user. Because a Tcl script is a program running on an IOS-based device, additional code added to the script could potentially send passwords via e-mail, erase the saved configurations or IOS images, cause the device to reload periodically, and so on. The capability to protect scripts against this type of attack is ...

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