If you're rocking one of Apple's newer routers, aka an AirPort with 802.11ac, head on into the settings and update that sucker. There's a security update that addresses SSL/TLS. Here's the deal with firmware version 7.7.3:
Firmware update 7.7.3 is recommended for all AirPort Extreme and AirPort Time Capsule base stations with 802.11ac. It provides security improvements related to SSL/TLS. Other AirPort base stations do not require this firmware update.
This one's for AirPort Extremes and Time Capsules with 802.11ac.
Apple notes that you might have to re-enable Back to my Mac after the update.