XPの代替でLinuxに移行しました
デスクトップ向けっていうんでしょうか？サーバ用途じゃない感じで使いたいです
iptables -Lで出てきたんですがこれはは安全ですか？
apacheを入れてますが外部から接続されたくはないです

Chain INPUT (policy DROP)
target prot opt source destination
DROP tcp -- anywhere anywhere tcp dpt:http
ACCEPT all -- anywhere anywhere
REJECT all -- anywhere loopback/8 reject-with icmp-port-unreachable
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:30000
ACCEPT icmp -- anywhere anywhere icmp echo-request
LOG all -- anywhere anywhere limit: avg 5/min burst 5 LOG level debug prefix "iptables denied: "
REJECT all -- anywhere anywhere reject-with icmp-port-unreachable

Chain FORWARD (policy DROP)
target prot opt source destination
REJECT all -- anywhere anywhere reject-with icmp-port-unreachable

Chain OUTPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere