2015/12/19

Easy way to prevent from GFW DNS abusing

The easiest way to distinguish the GFW DNS abusing result from real DNS responses is using iptables to block the dummy DNS response by GFW

# iptables -t mangle -I PREROUTING -s 8.8.8.8/16 -m ttl --ttl-gt 63 -j DROP
# ip6tables -t mangle -I PREROUTING -s 2001:4860:4860::8844/112 -m hl --hl-gt 52 -j DROP

BlockChain 相关电子书

@copyright of Sam Chadwick   - https://thehub.thomsonreuters.com/groups/bitcoin/blog/2017/09/10/blockchain-paper Blockchain Papers A c...