官方说的原因是...
error Codes - 6023 and 6024 (Unable To Negotiate A Successful Connection)
This error means something is preventing Parsec from making the network connection between you and the other computer. This peer-to-peer connection could be prevented because of NAT issues, firewall issues, improper/non-existent port forwarding, or even if your ISP has been blocking the UDP connections.
Make sure to check everything below on both of the computers that are trying to make the connection.
翻译过来：
错误代码-6023和6024（无法协商成功的连接）
此错误意味着有东西阻止Parsec在您和另一台计算机之间建立网络连接。由于NAT问题、防火墙问题、不正确/不存在的端口转发，或者即使您的ISP已阻止UDP连接，也可以阻止此对等连接。
请确保在尝试建立连接的两台计算机上检查以下所有内容。
——————————————————————————————————————————————
但是我防火墙都关了还是连不上...
error Codes - 6023 and 6024 (Unable To Negotiate A Successful Connection)
This error means something is preventing Parsec from making the network connection between you and the other computer. This peer-to-peer connection could be prevented because of NAT issues, firewall issues, improper/non-existent port forwarding, or even if your ISP has been blocking the UDP connections.
Make sure to check everything below on both of the computers that are trying to make the connection.
翻译过来：
错误代码-6023和6024（无法协商成功的连接）
此错误意味着有东西阻止Parsec在您和另一台计算机之间建立网络连接。由于NAT问题、防火墙问题、不正确/不存在的端口转发，或者即使您的ISP已阻止UDP连接，也可以阻止此对等连接。
请确保在尝试建立连接的两台计算机上检查以下所有内容。
——————————————————————————————————————————————
但是我防火墙都关了还是连不上...
