Special Permalinks for blog

Hello everyone!
I have the urls (permanent links) configured as the name of the entry, for example: mydomain. com/post-name.
I have several pages on the web (services, about, etc), including the main one for the blog, where you can see the latest articles published and whose url is: mydomain. com/blog.
When I publish a new article the url is mydomain. com/post-name. But, what I would like is to have different urls for the blog, I mean, all the blog's urls start with /blog/... like this: mydomain. com/blog/post-name. Does anyone know how to do it?

Thanks in advance!!