28 lines
No EOL
909 B
Markdown
28 lines
No EOL
909 B
Markdown
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title = "Server going slow after IPTables configuration? Try this"
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date = 2013-02-27
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Recently I've started the migration of my company's servers to a new provider.
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After checking that the OS installed on the -now- old servers was Ubuntu 8.04
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(holy shit), I decided to make a fresh install of CentOS 6.3, cleaning up all
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the servers contents and setting up everything from scratch.
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After setting my iptables rules (INPUT whitelisted, OUTPUT accept all) I
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noticed a big delay on every connection made to my server. After checking a
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lot of things, these two solved the issue:
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## Enable unilimited traffic on your loopback interface
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``` text
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iptables -A INPUT -i lo -j ACCEPT
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iptables -A OUTPUT -o lo -j ACCEPT
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```
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## Enable traffic for connections started by your server
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``` text
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iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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```
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Hope this solves your issue as it did with mine. |