Update README.md

[ci skip]

Author: hwdsl2

README-zh.md

@@ -118,7 +118,7 @@ VPN_PASSWORD='你的VPN密码' sh vpnsetup.sh
 
 对于有外部防火墙的服务器（比如 <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html" target="_blank">EC2</a>/<a href="https://cloud.google.com/compute/docs/networking#firewalls" target="_blank">GCE</a>），请打开 UDP 端口 500 和 4500，以及 TCP 端口 22 （用于 SSH）。
 
-如果需要打开服务器上的其它端口，请编辑 IPTables 防火墙规则： `/etc/iptables.rules` 和/或 `/etc/iptables/rules.v4` (Ubuntu/Debian)，或者 `/etc/sysconfig/iptables` (CentOS)。然后重启服务器。
+如果需要打开服务器上的其它端口，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。
 
 在使用 `IPsec/L2TP` 连接时，VPN 服务器在虚拟网络 `192.168.42.0/24` 内具有 IP `192.168.42.1`。
 

README.md

@@ -118,15 +118,15 @@ Clients are set to use <a href="https://developers.google.com/speed/public-dns/"
 
 For servers with an external firewall (e.g. <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html" target="_blank">EC2</a>/<a href="https://cloud.google.com/compute/docs/networking#firewalls" target="_blank">GCE</a>), open UDP ports 500 & 4500, and TCP port 22 (for SSH).
 
-To open additional ports on the server, edit the IPTables rules in `/etc/iptables.rules` and/or `/etc/iptables/rules.v4` (Ubuntu/Debian), or `/etc/sysconfig/iptables` (CentOS). Then reboot your server.
+To open additional ports on the server, edit `/etc/iptables.rules` and/or `/etc/iptables/rules.v4` (Ubuntu/Debian), or `/etc/sysconfig/iptables` (CentOS). Then reboot your server.
 
 When connecting via `IPsec/L2TP`, the VPN server has IP `192.168.42.1` within the VPN subnet `192.168.42.0/24`.
 
 The scripts will backup existing config files before making changes, with `.old-date-time` suffix.
 
 ## Upgrade Libreswan
 
-The additional scripts <a href="extras/vpnupgrade.sh" target="_blank">vpnupgrade.sh</a> and <a href="extras/vpnupgrade_centos.sh" target="_blank">vpnupgrade_centos.sh</a> can be used to upgrade Libreswan (<a href="https://libreswan.org" target="_blank">website</a> | <a href="https://lists.libreswan.org/mailman/listinfo/swan-announce" target="_blank">mailing list</a>). Update the `swan_ver` variable as necessary. Check installed version: `ipsec --version`
+The additional scripts <a href="extras/vpnupgrade.sh" target="_blank">vpnupgrade.sh</a> and <a href="extras/vpnupgrade_centos.sh" target="_blank">vpnupgrade_centos.sh</a> can be used to upgrade Libreswan (<a href="https://libreswan.org" target="_blank">website</a> | <a href="https://lists.libreswan.org/mailman/listinfo/swan-announce" target="_blank">mailing list</a>). Edit the `swan_ver` variable as necessary. Check installed version: `ipsec --version`
 
 ## Bugs & Questions