Use the internet? This Linux flaw could open you up to attack
Study Highlights Serious Security Threat to Many Internet Users
"RIVERSIDE, Calif. (www.ucr.edu) — Researchers at the University of California, Riverside have identified a weakness in the Transmission Control Protocol (TCP) of all Linux operating systems since late 2012 that enables attackers to hijack users’ internet communications completely remotely."
tl;dr The FIX
Edit /etc/sysctl.conf to include this line:
net.ipv4.tcp_challenge_ack_limit = 999999999
Then execute this command as root to apply the fix.
# sysctl -p
If you need the Windows Fix:
How to Turn Off (Disable) Web Proxy Auto Discovery (WPAD) in Windows Server 2008 R2
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