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Brett Verney
Beginner

Cisco IOS local password requirements

Hi there,

 

Can someone tell me what the requirements are for Cisco IOS local passwords? (permitted characters, maximum password length etc)?

 

I am in the process of developing an offline tool to create Type 9 hashes from a plain text password provided by the user. It's for those times when you need to create configs and don't have a switch or router handy.

 

Thanks!

 

-Brett

 

1 ACCEPTED SOLUTION

Accepted Solutions
Brett Verney
Beginner

Thanks Mohammed,

 

After a lot of testing, I did find some limitations:

Invalid characters in passwords = " and ?

Character limit = 127

 

-Brett

View solution in original post

3 REPLIES 3
Mohammed al Baqari
VIP Advisor

Hi,

There are no requirements for local password in IOS. You can enforce that
but its not present by default.

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_usr_aaa/configuration/15-sy/sec-usr-aaa-15-sy-book/sec-aaa-comm-criteria-pwd.html#GUID-DD1BD8BD-BC5E-4DC1-B08C-F860D2C82AEF

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Brett Verney
Beginner

Thanks Mohammed,

 

After a lot of testing, I did find some limitations:

Invalid characters in passwords = " and ?

Character limit = 127

 

-Brett

Thx Brett for sharing this.
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