diff --git a/docs/clients-zh.md b/docs/clients-zh.md
index 57f19b3..49a6a65 100644
--- a/docs/clients-zh.md
+++ b/docs/clients-zh.md
@@ -384,21 +384,21 @@ ipsec whack --trafficstatus
 
 ## 使用命令行配置 Linux VPN 客户端
 
-以下步骤是基于 [Peter Sanford 的工作](https://gist.github.com/psanford/42c550a1a6ad3cb70b13e4aaa94ddb1c)。这些命令必须在你的 VPN 客户端上使用 `root` 账户运行。
+在成功 <a href="../README-zh.md" target="_blank">搭建自己的 VPN 服务器</a> 之后，按照下面的步骤来使用命令行配置 Linux VPN 客户端。另外，你也可以 [使用图形界面](#linux) 配置。以下步骤是基于 [Peter Sanford 的工作](https://gist.github.com/psanford/42c550a1a6ad3cb70b13e4aaa94ddb1c)。这些命令必须在你的 VPN 客户端上使用 `root` 账户运行。
 
 要配置 VPN 客户端，首先安装以下软件包：
 
 ```bash
 # Ubuntu & Debian
 apt-get update
-apt-get -y install strongswan xl2tpd
+apt-get -y install strongswan xl2tpd net-tools
 
 # CentOS & RHEL
 yum -y install epel-release
-yum --enablerepo=epel -y install strongswan xl2tpd
+yum --enablerepo=epel -y install strongswan xl2tpd net-tools
 
 # Fedora
-yum -y install strongswan xl2tpd
+yum -y install strongswan xl2tpd net-tools
 ```
 
 创建 VPN 变量 （替换为你自己的值）：
diff --git a/docs/clients.md b/docs/clients.md
index b49c6d3..e85c13c 100644
--- a/docs/clients.md
+++ b/docs/clients.md
@@ -384,21 +384,21 @@ ipsec whack --trafficstatus
 
 ## Configure Linux VPN clients using the command line
 
-Instructions below are based on [the work of Peter Sanford](https://gist.github.com/psanford/42c550a1a6ad3cb70b13e4aaa94ddb1c). Commands must be run as `root` on your VPN client.
+After <a href="https://github.com/hwdsl2/setup-ipsec-vpn" target="_blank">setting up your own VPN server</a>, follow these steps to configure Linux VPN clients using the command line. Alternatively, you may configure [using the GUI](#linux). Instructions below are based on [the work of Peter Sanford](https://gist.github.com/psanford/42c550a1a6ad3cb70b13e4aaa94ddb1c). Commands must be run as `root` on your VPN client.
 
 To set up the VPN client, first install the following packages:
 
 ```bash
 # Ubuntu & Debian
 apt-get update
-apt-get -y install strongswan xl2tpd
+apt-get -y install strongswan xl2tpd net-tools
 
 # CentOS & RHEL
 yum -y install epel-release
-yum --enablerepo=epel -y install strongswan xl2tpd
+yum --enablerepo=epel -y install strongswan xl2tpd net-tools
 
 # Fedora
-yum -y install strongswan xl2tpd
+yum -y install strongswan xl2tpd net-tools
 ```
 
 Create VPN variables (replace with actual values):
diff --git a/docs/ikev2-howto-zh.md b/docs/ikev2-howto-zh.md
index 469d754..aadbd6d 100644
--- a/docs/ikev2-howto-zh.md
+++ b/docs/ikev2-howto-zh.md
@@ -109,7 +109,7 @@ Libreswan 支持通过使用 RSA 签名算法的 X.509 Machine Certificates 来
    EOF
    ```
 
-1. 生成 Certificate Authority (CA) 和 VPN 服务器证书：
+1. 生成 Certificate Authority (CA) 和 VPN 服务器证书。
 
    **注：** 使用 "-v" 参数指定证书的有效期（单位：月），例如 "-v 120"。
 
@@ -152,7 +152,7 @@ Libreswan 支持通过使用 RSA 签名算法的 X.509 Machine Certificates 来
    Generating key.  This may take a few moments...
    ```
 
-1. 生成客户端证书，然后导出 `.p12` 文件，该文件包含客户端证书，私钥以及 CA 证书：
+1. 生成客户端证书，然后导出 `.p12` 文件，该文件包含客户端证书，私钥以及 CA 证书。
 
    生成客户端证书：
 
diff --git a/docs/ikev2-howto.md b/docs/ikev2-howto.md
index e84000b..9e384ee 100644
--- a/docs/ikev2-howto.md
+++ b/docs/ikev2-howto.md
@@ -109,7 +109,7 @@ The following example shows how to configure IKEv2 with Libreswan. Commands belo
    EOF
    ```
 
-1. Generate Certificate Authority (CA) and VPN server certificates:
+1. Generate Certificate Authority (CA) and VPN server certificates.
 
    **Note:** Specify the certificate validity period (in months) with "-v". e.g. "-v 120".
 
@@ -152,7 +152,7 @@ The following example shows how to configure IKEv2 with Libreswan. Commands belo
    Generating key.  This may take a few moments...
    ```
 
-1. Generate client certificate(s), then export the `.p12` file that contains the client certificate, private key, and CA certificate:
+1. Generate client certificate(s), then export the `.p12` file that contains the client certificate, private key, and CA certificate.
 
    Generate client certificate: