How the Juniper Firewall restores factory default settings

Oh! Finally went to work in the company. I used to learn Cisco's routing exchange, but our company asked to use the Juniper Firewall, no way I had to self-study! But fortunately, the company has provided two juniper firewalls. So let's take a look at our Juniper firewall. How do we solve the code?

People who have used juniper products should know a little, juniper product password Forget the words is a very painful thing, why say so? Come down and listen to what I have to tell you!

The loss of the password is unrecoverable, so we have to regain administrative privileges by restoring the factory default settings (the original configured parameters, certificates, etc. will be deleted).

There are two ways to restore the factory default configuration:

1. In console mode, use the serial number of the device to login the username/password.

After a successful system appears warning prompt, will erase the existing configuration, confirm the system begins to restore the default configuration, and then reboot. The whole process is about 3 minutes.

So how do we get this serial number? There are two ways to get this serial number, the first of which is to have a serial number behind the product. The second option is to obtain it by entering "get Sys".

Let's take a look at the Juniper Firewall startup process:

NetScreen ns-5gt Boot Loader Version 2.1.0 (CHECKSUM:61D07DA5)

Copyright (c) 1997-2003 NetScreen Technologies, Inc.

Total Physical MEMORY:128MB

Test-pass

Initialization ..... Done

Hit any key to run loader

Hit any key to run loader

Hit any key to run loader

Hit any key to run loader

Loading default system image from on-board flash disk ...

done! (size = 11,108,352 bytes)

Ignore Image authentication!

Start Loading ...

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Done.

Juniper Networks, Inc.

NS-5GT System Software

Copyright, 1997-2008

Version 6.2.0r1.0

Load manufacture Information ... Done

Initialize fbtl 0 .... Done

Load NVRAM Information ... (6.2.0) Done

Syimage

Install module init vectors

Build and Grow Heap:system, order:13

Initial Port mode trust-untrust (1)

Install modules (00FDC800,01BF5C70) ...

PPP Ip-pool initiated, 256 pools

System Config (1945 bytes) loaded

Done.

Load System Configuration ......................................................................................................................... ......... Disabled LicenseKey Auto Update

................... Done

System init done ...

Login:trust Interface Change Physical

Untrust Interface Change Physical

Login:system Change State to Active (1)

The above is our Juniper Firewall startup process, here has learned Cisco's should be big enough to be able to understand.

So now we're going to log in with our root user and check our setup and serial number:

Login: admin here to pay attention to the user name is I changed, the default is: NetScreen password is also netscreen

Password: Here's a bit of Linux basics to know that we're going to enter the username here without any display. Do not think that is not entered into the ha.

Ns5gt-> That means we're already logged in.

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