OPIE – One Time Keys
![](https://www.clearchain.com/blog/wp-content/plugins/thumbnail-for-excerpts/tfe_no_thumb.png)
Using External SSH access with normal password authentication is dangerous. It is susceptible to the following problems: People can use weak passwords which are easy to hack A remote machine may have a key logger on it Someone may be performing a man-in-the-middle type attack Hence if you wish to access a shell account or [..more..]