多用户鉴权

FRP支持多用户鉴权，适用于多租户环境：

[common]
bind_port = 7000
token = common_token
authentication_method = token
authenticate_heartbeats = true
authenticate_new_work_conns = true

用户特定配置

可以为不同用户设置不同权限：

[common]
bind_port = 7000

[plugin.user-manager]
addr = 127.0.0.1:9000
path = /handler
ops = Login

连接池配置

优化并发连接性能：

[common]
server_addr = x.x.x.x
server_port = 7000
pool_count = 5

[ssh]
type = tcp
local_ip = 127.0.0.1
local_port = 22
remote_port = 6000

带宽限制

控制代理服务使用的带宽：

[ssh]
type = tcp
local_ip = 127.0.0.1
local_port = 22
remote_port = 6000
bandwidth_limit = 1MB