Allow the downloading of maps?

How do I allow the downloading of maps from the server?

Add
net_maxfilesize 64
to your server.cfg

The default value is 16, which means the server won’t download maps over 16MB in size. The minimum value is 0.000000 and the maximum value is 64.000000.

You also need sv_allowdownload 1 and sv_allowupload 1, but these are set to 1 by default.