sync outlook with portable app?

If they've banned it for security reasons, and you work around it by using some other app, I kinda think that you'll be looking for a new job when they find out.

Your workplace has a specific policy that you should not sync portable devices (your phone) from Outlook. This is to prevent the leakage of sensitive data outside of the office and their control. That means that you shouldn't do it.

Don't forget that you almost certainly have confidential information stored in your Outlook. Not only all your calendar appointments, but also possibly emails to and from both customers and suppliers, discussions of policies, pricing, internal issues, contact details for colleagues and other associates, possibly a fair fraction of the company's customer database, etc. There are a lot of reasons why a company will not want that sort of data being dumped onto a mobile phone.

That said, there are quite a number of apps that can sync to various mobile devices, but they all tend to be very specific to a particular type of smartphone, so without more information on the specifics, people probably won't be able to help you much.