diff --git a/README-zh.md b/README-zh.md
index 810788e..dcafb0f 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -140,12 +140,12 @@ DigitalOcean 用户可以参考这个修改一次注册表,以解决 VPN 服务器 和/或 客户端与 NAT (比如家用路由器)的兼容问题。
-同一个 VPN 账户可以在你的多个设备上使用。但是由于 IPsec/L2TP 的局限性,如果你需要同时连接在同一个 NAT 后面(比如家用路由器)的多个设备到 VPN 服务器,你必须仅使用 IPsec/XAuth 模式。
+同一个 VPN 账户可以在你的多个设备上使用。但是由于 IPsec/L2TP 的局限性,如果需要同时连接在同一个 NAT (比如家用路由器)后面的多个设备到 VPN 服务器,你必须仅使用 IPsec/XAuth 模式。
+
+对于有外部防火墙的服务器(比如 EC2/GCE),请为 VPN 打开 UDP 端口 500 和 4500。
如果需要添加,修改或者删除 VPN 用户账户,请参见 管理 VPN 用户。
-对于有外部防火墙的服务器(比如 EC2/GCE),请打开 UDP 端口 500 和 4500,以及 TCP 端口 22 (用于 SSH)。
-
在 VPN 已连接时,客户端配置为使用 Google Public DNS。如果偏好其它的域名解析服务,请编辑 `/etc/ppp/options.xl2tpd` 和 `/etc/ipsec.conf` 并替换 `8.8.8.8` 和 `8.8.4.4`。然后重启服务器。
如果需要在安装后更改 IPTables 规则,请编辑 `/etc/iptables.rules` 和/或 `/etc/iptables/rules.v4` (Ubuntu/Debian),或者 `/etc/sysconfig/iptables` (CentOS)。然后重启服务器。
@@ -168,7 +168,7 @@ wget https://git.io/vpnupgrade-centos -O vpnupgrade.sh
## 问题和反馈
- 有问题需要提问?请先搜索已有的留言,在 这个 Gist 以及 我的博客。
-- VPN 的相关问题可在这些邮件列表提问: [1] [2],或者看相关文章: [1] [2] [3] [4] [5]。
+- VPN 的相关问题可在 Libreswan 或 strongSwan 邮件列表提问,或者参考这些网站: [1] [2] [3] [4] [5]。
- 如果你发现了一个可重复的程序漏洞,请提交一个 GitHub Issue。
## 卸载说明
diff --git a/README.md b/README.md
index fe01b20..3f99336 100644
--- a/README.md
+++ b/README.md
@@ -140,12 +140,12 @@ Enjoy your very own VPN! :sparkles::tada::rocket::sparkles:
For **Windows users**, this one-time registry change is required if the VPN server and/or client is behind NAT (e.g. home router).
-The same VPN account can be used by your multiple devices. However, due to an IPsec/L2TP limitation, you must use only IPsec/XAuth mode if you wish to connect multiple devices simultaneously from behind the same NAT (e.g. home router).
+The same VPN account can be used by your multiple devices. However, due to an IPsec/L2TP limitation, if you wish to connect multiple devices simultaneously from behind the same NAT (e.g. home router), you must use only IPsec/XAuth mode.
+
+For servers with an external firewall (e.g. EC2/GCE), open UDP ports 500 and 4500 for the VPN.
If you wish to add, edit or remove VPN user accounts, see Manage VPN Users.
-For servers with an external firewall (e.g. EC2/GCE), open UDP ports 500 & 4500, and TCP port 22 (for SSH).
-
Clients are set to use Google Public DNS when the VPN is active. If another DNS provider is preferred, replace `8.8.8.8` and `8.8.4.4` in both `/etc/ppp/options.xl2tpd` and `/etc/ipsec.conf`. Then reboot your server.
To modify the IPTables rules after install, edit `/etc/iptables.rules` and/or `/etc/iptables/rules.v4` (Ubuntu/Debian), or `/etc/sysconfig/iptables` (CentOS). Then reboot your server.
@@ -168,7 +168,7 @@ wget https://git.io/vpnupgrade-centos -O vpnupgrade.sh
## Bugs & Questions
- Got a question? Please first search other people's comments in this Gist and on my blog.
-- Ask VPN related questions on these mailing lists: [1] [2], or read related articles: [1] [2] [3] [4] [5].
+- Ask VPN related questions on the Libreswan or strongSwan mailing list, or read these wikis: [1] [2] [3] [4] [5].
- If you found a reproducible bug, open a GitHub Issue to submit a bug report.
## Uninstallation
diff --git a/docs/clients-zh.md b/docs/clients-zh.md
index eeabd82..b0f4ca4 100644
--- a/docs/clients-zh.md
+++ b/docs/clients-zh.md
@@ -388,6 +388,14 @@ strongswan down myvpn
### 其它错误
+首先,你可以尝试重启 VPN 服务器上的相关服务:
+```
+service ipsec restart
+service xl2tpd restart
+```
+
+如果你使用 Docker,请运行 `docker restart ipsec-vpn-server`。
+
更多的故障排除信息请参见以下链接:
https://documentation.meraki.com/MX-Z/Client_VPN/Troubleshooting_Client_VPN#Common_Connection_Issues
diff --git a/docs/clients.md b/docs/clients.md
index 3c97df4..e89cd33 100644
--- a/docs/clients.md
+++ b/docs/clients.md
@@ -387,6 +387,14 @@ If you are unable to connect using Android 6 (Marshmallow) or 7 (Nougat):
### Other Errors
+First, you may try restarting services on the VPN server:
+```
+service ipsec restart
+service xl2tpd restart
+```
+
+If using Docker, run `docker restart ipsec-vpn-server`.
+
For additional troubleshooting tips, refer to the links below:
https://documentation.meraki.com/MX-Z/Client_VPN/Troubleshooting_Client_VPN#Common_Connection_Issues