No, you don't need to have any special fonts installed if you are using an up-to-date web browser. This is because the fonts are embedded in the OCP pages. Older browsers, though, do not support font-embedding.
If you are using an older browsers, you will need to download and install fonts that include the proper character sets. There are many fonts that will do the job, but these are our preferred fonts. All of them are free downloads: