Debian系统，通过pptp连接了校内vpn，然后在python下用ftplib登录，失败，提示'Invalid IP Address'。
用ifconfig查看，有eth0和eth1还有ppp0（ppp0是我连的vpn），猜想是ftp走的还是外网，不知道怎么让ftp走校内vpn通道？
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After connecting to VPN, you can only log in to the ftp server if you can ping the intranet ftp. You can try the following command:
ping FTPServerHostOrIP telnet FTPServerHostOrIP FTPServerPort
FTPServerHostOrIP Actual FTP hostname or IP address FTPServerPort Actual FTP hostname and port
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After connecting to VPN, you can only log in to the ftp server if you can ping the intranet ftp. You can try the following command:
FTPServerHostOrIP Actual FTP hostname or IP address
FTPServerPort Actual FTP hostname and port