[c-nsp] Help !!

[osmcruzl at gmail.com]

Hi folks

I'm new here and searching for help because i have to prepare a good network
topology in which can stablish a connesction between 5 offices, but now i
dont have any idea about what kind of router and switch do i use. the
scenary is this

main office with 30 pcs 1 dns server, 1 mail server and db server and 5
branches with 20 pcs each one all office with different isp with a satatic
ip. is it work ?

i want to send and receive packets trough a vpn tunnel but i'd like to know
what is the best equipment (models) including firewall, vpn security, and
all features inside.

 please let me know it , any help is welcome


 Thanks in advance and sorry by my ignorance !