denyhosts software package provides Utility to help sys admins thwart SSH crackers, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install denyhosts
denyhosts is installed in your system.
Make ensure the denyhosts package were installed using the commands given below,
$ sudo dpkg-query -l | grep denyhosts *
You will get with denyhosts package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Network |
| Package | denyhosts |
| Version | 2.10-2 |
| Description | Utility to help sys admins thwart SSH crackers |
| Sub Section | Net |