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[GH-ISSUE #1667] CentOS8 frp0.31.2, frps无法监听21端口 #1320
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Reference: github-starred/frp#1320
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Originally created by @shenlijun on GitHub (Feb 20, 2020).
Original GitHub issue: https://github.com/fatedier/frp/issues/1667
Issue is only used for submiting bug report and documents typo. If there are same issues or answers can be found in documents, we will close it directly.
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Use the commands below to provide key information from your environment:
You do NOT have to include this information if this is a FEATURE REQUEST
What version of frp are you using (./frpc -v or ./frps -v)?
frps 0.31.2
What operating system and processor architecture are you using (
go env)?CentOS 8.1911
Configures you used:
单纯
frpc:
[range:FTP]
type = tcp
local_ip = 127.0.0.1
local_port = 50000-50010,21
remote_port = 50000-50010,21
或者单纯
frps:
[common]
bind_port = 21
Steps to reproduce the issue:
1.
2.
3.
Describe the results you received:
CentOS8防火墙关闭，确认21未占用，frps都不可以监听
如果frps绑定21，服务无法启动
Describe the results you expected:
Additional information you deem important (e.g. issue happens only occasionally):
Can you point out what caused this issue (optional)
@shenlijun commented on GitHub (Feb 20, 2020):
也可能是VPS的问题，之前CentOS 7没有这个问题
@shenlijun commented on GitHub (Feb 20, 2020):
nc -l 21是可以的，应该不是系统的限制
@fatedier commented on GitHub (Feb 20, 2020):
Describe the results you received: 错误日志
@shenlijun commented on GitHub (Feb 20, 2020):
奇怪的是直接命令行frps -c frps.ini就没问题，用服务启动就不可以
@fatedier commented on GitHub (Feb 20, 2020):
贴一下错误信息更容易看出来是什么问题。
@shenlijun commented on GitHub (Feb 20, 2020):
@fatedier
服务里面用的是nobody，不能监听21端口
奇怪的是以前centos 7就可以。但是按理说linux都不可以监听1024以下才对，诡异
@shenlijun commented on GitHub (Feb 20, 2020):
@fatedier 可能我在以前的VPS改过忘记了，额……打扰了
@shenlijun commented on GitHub (Feb 20, 2020):
@fatedier
不知道在将后的release里面service文件加上AmbientCapabilities=CAP_NET_BIND_SERVICE会不会好一点？