You can set up a VPN without downloading any new apps by using the built-in network settings in Mac OS X 10.6.8. Go to > Network . Click the [+] button to add a new interface.
Offers manual IKEv2 and OpenVPN configs for paid users that can be imported into legacy clients. Critical Security Warnings VPN for mac os 10.6.8 - jwsoundgroup download vpn mac os x 10.6.8
While their apps won't work, these providers allow you to download manual configuration files for use with Tunnelblick or the built-in Mac client: You can set up a VPN without downloading