```bash
iptables -F
iptables -A INPUT -p tcp -m tcp -m multiport --dports 22,80,443 -j ACCEPT
iptables -A INPUT -m conntrack -j ACCEPT  --ctstate RELATED,ESTABLISHED
iptables -A INPUT -j DROP
iptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -j DROP
iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -j DROP
```
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence