[b]脚本一[/b]

发现每次在/etc/resolv.conf 修改DNS之后，重启就会失效。在执行
vi /etc/resolv.conf
之后发现有以下输出：
This file is managed by manystemd-resolved(8). Do not edit.This is a dynamic resolv.conf file for connecting local clients to the
internal DNS stub resolver of systemd-resolved. This file lists all configured search domains.Run "systemd-resolve --status" to see details about the uplink DNS servers currently in use.Third party programs must not access this file directly, but only through the
symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,replace this symlink by a static file or a different symlink.
See manystemd-resolved.service(8) for details about the supported modes of operation for /etc/resolv.conf.
于是:
ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 39 Feb 18 2020 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
也就是说resolv.conf 现在归systemd管，果然找到了/etc/systemd/resolved.conf 文件：
This file is part of systemd.
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
Entries in this file show the compile time defaults.
You can change settings by editing this file.
Defaults can be restored by simply deleting this file.
See resolved.conf(5) for details

原文地址：http://www.yidianzixun.com/article/0V4s1xF0

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[b]********************************************************************************************[/b]
[b]使用iptables开放端口
[/b]
这个大佬使用iptalbes开放了必要的端口，可以用。



sudo iptables -I INPUT -s 0.0.0.0/0 -p tcp --dport 8888 -j ACCEPT

sudo iptables -I INPUT -s 0.0.0.0/0 -p tcp --dport 80 -j ACCEPT

sudo iptables -I INPUT -s 0.0.0.0/0 -p tcp --dport 443 -j ACCEPT

sudo iptables-save

sudo apt-get update

sudo apt-get install iptables-persistent -y

sudo netfilter-persistent save
[b]sudo netfilter-persistent reload[/b]

[b]********************************************************************************************[/b]

[b]彻底禁用防火墙[/b]
直接删除iptables规则
sudo rm -rf /etc/iptables && reboot
开放所有端口
sudo iptables -P INPUT ACCEPT
sudo iptables -P FORWARD ACCEPT
sudo iptables -P OUTPUT ACCEPT
sudo iptables -F
sudo apt-get purge netfilter-persistent reboot

[b]233boy[/b]：
bash <(curl -s -L https://git.io/v2ray.sh)