伙计们，
我需要咨询。 我需要连接位于其他地方的两台服务器。 其中一台服务器在LeaseWeb，另一台在莫斯科办公室。
我正在使用OpenVPN进行隧道。 我通过yum -y install openvpn安装了OpenVPN。 之后，我正在尝试接口。
在第一台服务器上
/usr/sbin/openvpn --remote 217.28.227.46 --dev tun1 --ifconfig 172.16.1.1 172.16.1.2 Wed Jul 31 18:07:31 2013 OpenVPN 2.2.2 i686-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] built on Apr 5 2012 Wed Jul 31 18:07:31 2013 IMPORTANT: OpenVPN's default port number is now 1194, based on an official port number assignment by IANA. OpenVPN 2.0-beta16 and earlier used 5000 as the default port. Wed Jul 31 18:07:31 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Wed Jul 31 18:07:31 2013 ******* WARNING *******: all encryption and authentication features disabled -- all data will be tunnelled as cleartext Wed Jul 31 18:07:31 2013 TUN/TAP device tun1 opened Wed Jul 31 18:07:31 2013 /sbin/ip link set dev tun1 up mtu 1500 Wed Jul 31 18:07:31 2013 /sbin/ip addr add dev tun1 local 172.16.1.1 peer 172.16.1.2 Wed Jul 31 18:07:31 2013 UDPv4 link local (bound): [undef]:1194 Wed Jul 31 18:07:31 2013 UDPv4 link remote: 217.28.227.46:1194 Wed Jul 31 18:07:41 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:07:51 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:08:02 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:08:12 2013 write UDPv4 []: No such process (code=3)
第二台服务器上的命令是一样的：
/usr/sbin/openvpn --remote 95.211.186.49 --dev tun1 --ifconfig 172.16.1.2 172.16.1.1 Wed Jul 31 18:08:41 2013 OpenVPN 2.2.2 i686-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [eurephia] built on Apr 5 2012 Wed Jul 31 18:08:41 2013 IMPORTANT: OpenVPN's default port number is now 1194, based on an official port number assignment by IANA. OpenVPN 2.0-beta16 and earlier used 5000 as the default port. Wed Jul 31 18:08:41 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Wed Jul 31 18:08:41 2013 ******* WARNING *******: all encryption and authentication features disabled -- all data will be tunnelled as cleartext Wed Jul 31 18:08:41 2013 TUN/TAP device tun1 opened Wed Jul 31 18:08:41 2013 /sbin/ip link set dev tun1 up mtu 1500 Wed Jul 31 18:08:41 2013 /sbin/ip addr add dev tun1 local 172.16.1.2 peer 172.16.1.1 Wed Jul 31 18:08:41 2013 UDPv4 link local (bound): [undef]:1194 Wed Jul 31 18:08:41 2013 UDPv4 link remote: 95.211.186.49:1194 Wed Jul 31 18:08:51 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:09:01 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:09:11 2013 write UDPv4 []: No such process (code=3) Wed Jul 31 18:09:21 2013 write UDPv4 []: No such process (code=3)
接口被提升，似乎工作。 不幸的是，我不能ping通，例如，来自第一台服务器的IP 172.16.1.2。 我介意关于UDP的这些消息。 你能build议 – 我的主机阻止UDP吗？ 我写了一条消息，他们告诉他们只能阻止tcp / 445和tcp / 139（这是LeaseWeb）。
总的来说，我省略了什么？
我的服务器都是CentOS 5.9 x86。 LeaseWeb的服务器是Xen DomU，第二个节点位于我们办公室的KVMpipe理程序中。
谢谢。