I've been worrying about the ability for wireless routers to withstand any significant attack, particularly given the reponsiveness of the manufacturers of the things (like, none at all) to exploits. So I made a decision to put my wireless router behind a firewall that keeps bad people in the cloud from playing.
Yes, the firewall would cost money ($70 for the computer, $0 for the firewall software -- I'm using CentOS and IPTABLES) and it's another box, but that box protects my inside network, so that I abide by the rule "Never expose Microsoft gear to the bare Internet." As a bonus, I run the router in bridge mode, so that my firewall gets to answer DHCP requests instead of the router. Makes packages like Dropbox work properly even for wireless devices.
I use LANsync quite a bit, because the repository at work has some DVD ISO images, and an update or addition causes quite a bit of network traffic without LANsync. With LANsync, the traffic is between my fileserver and the wireless device, and the uplink carries only the administrative traffic.
What I'm looking for is a wireless card I can put into a CentOS 7 box, so that I don't have to have the lashup I have now. It also means my resulting wireless router/server would be considerably more future-proof than my no-longer-supported Cisco branded router is. (Rebanded Linksys, I think.)