Increase iPhones’ battery life by removing unnecessary IPv6 multicast Router Advertisements

I came across a new RFC 7772: “Reducing Energy Consumption of Router Advertisements”. I want to share my learnings after reading this RFC.

Internet Engineering Task Force (IETF) Logo, captured on Wikipedia.

I intentionally mentioned “iPhone” at the subject to have your attention. Actually, the whole discussion applies to any mobile devices with limited battery capacity, such as smart phones and tablet computers.

It is quite obvious mobile devices will consume more power while awake than asleep. The question is how serious this problem is?

Update your Cisco ASA OS ASAP!

I just want to make sure you have known this news and updated your Cisco ASA OS already.

Cisco announced a "critical" vulnerability of Cisco ASA OS and released patched OS for them at the same time. Hackers could make use of this vulnerability to gain control of your Cisco ASA.

The first fixed version of ASA OS to fix this problem.
Screen captured on Cisco's web site.

Vulnerable Products

Cisco ASA Software is affected by this vulnerability if the system is configured to terminate IKEv1 or IKEv2 VPN connections.

This includes the following:

• LAN-to-LAN IPsec VPN
• Remote access VPN using the IPsec VPN client
• Layer 2 Tunneling Protocol (L2TP)-over-IPsec VPN connections
• IKEv2 AnyConnect

Cisco ASA Software can be downloaded from the Software Center on Cisco.com by visitinghttp://www.cisco.com/cisco/software/navigator.html.

The full details about this vulnerability and patched OS is on Cisco's official web site:
Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability (CVE-2016-1287)