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@kure

GREメモ

Posted at

前提

  • さくらVPS(CentOS 6.8)×２
  • グローバルIPが１個付与、ローカルは仮想(tun)

設定

# ip tunnel add tun0 mode gre remote [宛先グローバル] local [送信元グローバル] dev eth0
# ifconfig tun0 [送信元ローカル] netmask 255.255.255.252 pointopoint [宛先ローカル]
# ifconfig tun0 mtu 1500 up

パケットキャプチャ

ScreenClip.png

メモ
- GREヘッダが付与される
- 内容は要確認

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