Skip to Content
CISCO IOS in a Nutshell
book

CISCO IOS in a Nutshell

by James Boney
December 2001
Intermediate to advanced
608 pages
25h 14m
English
O'Reilly Media, Inc.
Content preview from CISCO IOS in a Nutshell

Name

tacacs-server authenticate — global

Synopsis

tacacs-server authenticate connection [always] 
tacacs-server authenticate enable
tacacs-server authenticate slip [always] [access-lists]
no tacacs-server authenticate 

Configures

User authentication with TACACS and extended TACACS

Default

Disabled

Description

This command causes the router to contact the TACACS server and authenticate the user under the following conditions:

connection

When the user makes a TCP connection.

enable

When the user enters the enable command.

slip

When the user starts a SLIP or PPP connection.

For authenticating TCP or SLIP connections, the always keyword indicates that the router should always perform authentication even if the user is not logged in. Note that it is possible for a SLIP or PPP user to be connected, but not yet logged in. For authenticating SLIP connections, the access-lists keyword tells the router to check with the TACACS server to see if an access list needs to be installed for the user.

If you are using TACACS+, use the aaa authorization command instead of the tacacs-server authenticate command.

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Cisco IOS in a Nutshell, 2nd Edition

Cisco IOS in a Nutshell, 2nd Edition

James Boney
Cisco IOS XR Fundamentals

Cisco IOS XR Fundamentals

Mobeen Tahir, Mark Ghattas, Dawit Birhanu, Syed Natif Nawaz

Publisher Resources

ISBN: 156592942XCatalog PageErrata