Could someone explain IPTABLES

What the hell does the following commands do? How bad am I fucking myself?

sudo iptables -F
sudo iptables -P INPUT DROP
sudo iptables -P FORWARD DROP
sudo iptables -P OUTPUT ACCEPT
sudo iptables -A INPUT -p tcp --dport ssh -j ACCEPT
sudo iptables -A INPUT -p tcp --dport http -j ACCEPT
sudo iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -I INPUT 5 -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7
sudo iptables-save > iptables.conf

Looks like it starts by clearing everything existing out and then allowing incoming connections on ssh and http and then outputting to a log file... I haven't screwed with this in ages but it's not anything really strange by any stretch

how about you RTFM and see what it does?

>>3
Back to /g/, please.

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Pretty much straightforward local filter config.
the state line is for accepting packets associated with outgoing tcp connections.
The log line would work, although I don't see why -I 5 is used -A would suffice. -I is normally only used when debugging a running config.

you might want to add rules for icmp and udp depending what else the machine is used for. Accepting ping within a certain limit is usually a good idea.