The highest Level Of security available is 3des 168 bit strong encryption with md5 158 digest hashing.
what devices you may wish to use depend on what broadband technologies you are using to access the internet. Do you wish to replace the CPE equipment on site with a router or cable-modem of your configuration. A soho solution will only run you about 600 to 1800$ to implement at each site.
ADSL = 827 cisco router
IDSL = 802 extended
Cable Modem = ubr905
Unknown or unpopular broadband ie radsl, xdsl, etc
do not try and swap out CPE equipment look into using a pix 506 or maybe a netscreen 5 as an alternative.
All the above have images or capable of the strongest level of encryption available.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...