Do not access external sites

[vinhais]

Background (please complete the following information):

• Panel or Daemon: daemon
• Version of Panel/Daemon: 0.7.15 / 0.6.12
• Server's OS: panel: alpine linux 3.10 / daemon: centos 7
• Your Computer's OS & Browser: solus 4 & chrome

Describe the bug
The servers cannot connect to external sites.
If I try to use a plugin that connects, it will give error, if I try to curl the host it will work normally.

Error appearing on console:
java.io.FileNotFoundException: http://www.jhdev.net/ip.php

However, if I try for the host:
https://prnt.sc/ox52nt

The firewall has no different configuration.

Daemon:
uname -a: Linux nc02 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

docker info:
Client:
Debug Mode: false

Server:
Containers: 37
Running: 9
Paused: 0
Stopped: 28
Images: 10
Server Version: 19.03.1
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-957.27.2.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 16
Total Memory: 30.54GiB
Name: nc02
ID: J2D7:IV3F:ISLD:EL5W:PRXD:AUVT:VLH3:YAME:4FZG:7RYQ:2XHJ:XQCO
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false

To Reproduce
Steps to reproduce the behavior:

1. Download a licensed plugin
2. Wait for him to make a connection and the error will appear

Expected behavior
It would be right if he makes the connection

[parkervcp]

As I have asked does DNS work in the container? When you ping a site it will give you the ip it finds for any hostname you provide.

[lancepioch]

This isn't an issue with our software. You can seek help on our Discord channels with your server configuration.