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Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

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Restoring access<br />

to the Admin<br />

Console<br />

Restoring access to the Admin Console<br />

Enabling and disabling authentication for the<br />

administrative kernel<br />

The following steps explain how to enable and disable authentication<br />

for the administrative kernel. By default, administrative kernel<br />

authentication is disabled. This is because it is generally assumed that<br />

the <strong>Sidewinder</strong> <strong>G2</strong> will be housed in a secure location that is not<br />

easily accessible by non-administrators. If your <strong>Sidewinder</strong> <strong>G2</strong> is<br />

housed in an insecure area (that is, non-administrators could easily<br />

gain access to the physical system), you should enable administrative<br />

kernel authentication.<br />

To enable or disable authentication for the administrative kernel,<br />

follow the steps below.<br />

1. Log in to the Admin Console, and select File Editor.<br />

2. Click Start File Editor.<br />

3. Select File -> Open.<br />

4. In the Source field, select Firewall File.<br />

5. In the File field, type /etc/ttys and click OK.<br />

6. To enable or disable administrative kernel authentication, edit the<br />

following line:<br />

console /usr/libexec/getty pccons" ibmpc3 on secure<br />

To require authentication, change the value to insecure.<br />

To disable authentication, change the value to secure.<br />

7. Select File -> Save to save your changes.<br />

8. Select File -> Exit to close the file editor.<br />

If an administrator accidentally configures the active rule group in a<br />

way that prevents an administrator from logging into the <strong>Sidewinder</strong><br />

<strong>G2</strong> (for example, moving the deny_all rule to the first position or<br />

deleting certain access rules), the following procedure allows you to<br />

regain access.<br />

1. Reboot the <strong>Sidewinder</strong> <strong>G2</strong> to the Administrative kernel. For information<br />

on rebooting to the Administrative kernel, see “Powering-up the system<br />

to the Administrative kernel” on page F-2.<br />

Basic Troubleshooting F-3

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