Use IPTables NOTRACK to implement stateless rules and reduce packet loss

Disabling IPTables connection tracking for DNS can resolve problems due to too many connections in the connection table.

2015-05-05 · 4 min

Use Getent Hosts in Scripts

It is common practice to use tools like ‘dig’ to lookup DNS results, but this has very bad performance. If you just need to lookup a name or address, there’s an easier, friendly way.

2015-04-15 · 5 min