Hi all. My company has many regional sites around the world. Normally for a new site we would set up a router(cisco 1841) which is directly connected to isp. On the other end of the 1841, it would be connected to asa5510. Behind the 5510, would be the office network. Right now, my company would like to cut costs and i am thinking of removing the asa5510, hence the office network would sit directly behind my 1841. Hence is there any significant difference between 1841 and asa5510 in terms of firewall function? I understand 1841 can configure accesslists as well as vpn so that my headquarters personnel can vpn into regional sites. Is 1841 stateful? Thks in advance.