frpc启动报错：[W] [service.go:131] login to server failed: EOF

问题描述

最近公司安全升级原来通过frp+open搭建的无法访问公司内部网络。排查发现frp客户端frpc启动异常。异常如下：

$ ./frpc -c frpc.ini
2023/07/08 13:58:14 [W] [service.go:131] login to server failed: EOF
EOF

问题分析

排查发现，frp服务端开启了认证。客户端需要添加相应配置。

服务端配置frps.ini：

[common]
bind_port = 7000
vhost_http_port = 80
vhost_https_port = 443
bind_udp_port = 7001
privilege_mode = true
privilege_token = pwd123

dashboard_port = 7002
dashboard_user = user_test
dashboard_pwd = user_test_pwd

客户端配置frpc.ini：

[common]
server_addr = xxx
server_port = 7000
privilege_token = pwd123
tls_enable = true


[open]
type = tcp
local_ip = 127.0.0.1
local_port = 1194
remote_port = 1194

造成问题的原因是少了privilege_token和tls_enable配置