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トップRaspbianに関する質問OpenVPNでLAN間接続がうまくいかない。

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2

参考情報追記

2018/04/29 02:03

投稿

tkmtmkt
tkmtmkt

スコア1800

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  10.8.0.2、10.8.0.5 は仮想ネットワークのネットワークアドレスとして設定されているようで、OpenVPNが設定するデフォルト値のようです。
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+ **【参考】**
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+ VPNが正常に接続できてる状態のログです。
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+ #### VPNサーバ側ログ（CentOS 7）
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+ ```sh
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+ $ grep vpn /var/log/messages | tail -n 20 | sed -r 's/(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])/***.***.***.***/g' | sed -r 's/www[0-9]{5}[a-z]{2}/********/g'
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+ Apr 29 08:42:53 ******** openvpn: Sun Apr 29 08:42:53 2018 client/***.***.***.***:34457 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 08:42:53 ******** openvpn: Sun Apr 29 08:42:53 2018 client/***.***.***.***:34457 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 08:42:53 ******** openvpn: Sun Apr 29 08:42:53 2018 client/***.***.***.***:34457 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384,
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+ 4096 bit RSA
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+ Apr 29 09:42:53 ******** openvpn: Sun Apr 29 09:42:53 2018 client/***.***.***.***:34457 TLS: soft reset sec=0 bytes=37202/0 pkts=708/0
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 VERIFY OK: depth=1, CN=********.sakura.ne.jp
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 VERIFY OK: depth=0, CN=client
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 09:42:54 ******** openvpn: Sun Apr 29 09:42:54 2018 client/***.***.***.***:34457 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384,
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+ 4096 bit RSA
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+ Apr 29 10:32:52 ******** yum[26376]: Updated: openvpn-2.4.5-1.el7.x86_64
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 TLS: soft reset sec=0 bytes=37097/0 pkts=706/0
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 VERIFY OK: depth=1, CN=********.sakura.ne.jp
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 VERIFY OK: depth=0, CN=client
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 10:42:54 ******** openvpn: Sun Apr 29 10:42:54 2018 client/***.***.***.***:34457 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384,
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+ 4096 bit RSA
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+ ```
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+ #### VPNクライアント側ログ（Ubuntu 16.04）
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+ ```sh
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+ $ grep vpn /var/log/syslog | tail -n 20 | sed -r 's/(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])/***.***.***.***/g' | sed -r 's/www[0-9]{5}[a-z]{2}/********/g'
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+ Apr 29 09:42:54 brix ovpn-client[1150]: VERIFY OK: nsCertType=SERVER
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+ Apr 29 09:42:54 brix ovpn-client[1150]: VERIFY OK: depth=0, CN=server
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+ Apr 29 09:42:54 brix ovpn-client[1150]: Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 09:42:54 brix ovpn-client[1150]: WARNING: this cipher's block size is less than 128 bit (64 bit). Consider using a --cipher with a larger block size.
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+ Apr 29 09:42:54 brix ovpn-client[1150]: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 09:42:54 brix ovpn-client[1150]: Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 09:42:54 brix ovpn-client[1150]: WARNING: this cipher's block size is less than 128 bit (64 bit). Consider using a --cipher with a larger block size.
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+ Apr 29 09:42:54 brix ovpn-client[1150]: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 09:42:54 brix ovpn-client[1150]: Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
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+ Apr 29 10:42:53 brix ovpn-client[1150]: TLS: tls_process: killed expiring key
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+ Apr 29 10:42:54 brix ovpn-client[1150]: VERIFY OK: depth=1, CN=********.sakura.ne.jp
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+ Apr 29 10:42:54 brix ovpn-client[1150]: VERIFY OK: nsCertType=SERVER
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+ Apr 29 10:42:54 brix ovpn-client[1150]: VERIFY OK: depth=0, CN=server
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+ Apr 29 10:42:54 brix ovpn-client[1150]: Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 10:42:54 brix ovpn-client[1150]: WARNING: this cipher's block size is less than 128 bit (64 bit). Consider using a --cipher with a larger block size.
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+ Apr 29 10:42:54 brix ovpn-client[1150]: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 10:42:54 brix ovpn-client[1150]: Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
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+ Apr 29 10:42:54 brix ovpn-client[1150]: WARNING: this cipher's block size is less than 128 bit (64 bit). Consider using a --cipher with a larger block size.
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+ Apr 29 10:42:54 brix ovpn-client[1150]: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
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+ Apr 29 10:42:54 brix ovpn-client[1150]: Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
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+ ```

1

追記

2018/04/29 02:03

投稿

tkmtmkt
tkmtmkt

スコア1800

test CHANGED
@@ -8,18 +8,60 @@
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  ```
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- +----------------+ +----------------+
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+ +----------------+ +-----------------+
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- | 192.168.0.yyy |----| 192.168.5.yyy |
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+ | 192.168.0.yyy |----| 192.168.5.yyy |
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- | | | |
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+ | | | |
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- | +----------+ | | +---------+ |
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+ | +----------+ | | +----------+ |
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- | | 10.8.0.2 |----------| 10.8.0.5| |
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+ | | 10.8.0.1 |----------| 10.8.0.6 | |
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- | +----------+ | | +---------+ |
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+ | +----------+ | | +----------+ |
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- +----------------+ +----------------+
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+ +----------------+ +-----------------+
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  ```
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+ ルーティング情報はそれぞれ以下の通り。（`proto kernel`はカーネルが自動生成するルート）
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+ ```sh
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+ # VPNサーバ
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+ $ ip route
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+ default via 192.168.0.1 dev eth0 proto static metric 100
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+ 10.8.0.0/24 via 10.8.0.2 dev tun0
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+ 10.8.0.2 dev tun0 proto kernel scope link src 10.8.0.1
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+ 192.168.0.0/23 dev eth0 proto kernel scope link src 192.168.0.yyy metric 100
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+ ```
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+ ```shoute
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+ # VPNクライアント
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+ $ ip r
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+ default via 192.168.5.1 dev eth0 onlink
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+ 10.8.0.1 via 10.8.0.5 dev tun0
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+ 10.8.0.5 dev tun0 proto kernel scope link src 10.8.0.6
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+ 192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.yyy
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+ ```
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+ 10.8.0.2、10.8.0.5 は仮想ネットワークのネットワークアドレスとして設定されているようで、OpenVPNが設定するデフォルト値のようです。