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## Netfilter-IPTables-Diagrams.md

      
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                kaiix
                / Netfilter-IPTables-Diagrams.md
            
            
              Created
              February 28, 2018 08:51
                — forked from nerdalert/Netfilter-IPTables-Diagrams.md
            
              
                Linux NetFilter, IP Tables and Conntrack Diagrams
              
          
    Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table
Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

  
## EC2.md

      
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                kaiix
                / EC2.md
            
            
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              February 3, 2016 04:24
                — forked from kkc/EC2.md
            
              
                EC2 settings
              
          
    EC2 相關設定

記憶體


設定swap（預設為60, 當系統使用到超過40% memory, 就會嘗試使用swap）
sysctl -w vm.swappiness=0   # from 60 -> 0