安装l2tp_安装

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安装L2TP/IPsec VPN服务器的详细指南

安装l2tp_安装(图片来源网络,侵删)

简介

本文档提供了详细的步骤,指导您在Linux操作系统上安装和配置一个L2TP/IPsec VPN服务器,L2TP(Layer 2 Tunneling Protocol)结合IPsec可以为远程用户提供安全的网络访问。

前提条件

Linux服务器,例如Ubuntu或CentOS。

具有sudo权限的用户。

稳定的网络连接。

安装步骤

1. 更新系统和安装必要的软件包

确保您的系统是最新的:

 sudo apt update && sudo apt upgrade y  # 对于基于Debian的系统,如Ubuntu 

或者

 sudo yum update y  # 对于基于RPM的系统,如CentOS 

安装必要的软件包:

 sudo apt install softwarepropertiescommon y  # Ubuntu sudo apt install strongswan xl2tpd y  # Ubuntu 

或者

 sudo yum install epelrelease y  # CentOS sudo yum install strongswan xl2tpd y  # CentOS 

2. 配置strongSwan

生成IPsec证书

创建IPsec PKI(Public Key Infrastructure):

 sudo ipsec pki gen outform pem > /etc/ipsec.d/private/cacerts.pem 

生成服务器证书和密钥:

 sudo ipsec pki self in /etc/ipsec.d/private/cacerts.pem dn "cn=server" outform pem > /etc/ipsec.d/private/certs/server.pem 

生成客户端证书和密钥:

 sudo ipsec pki self in /etc/ipsec.d/private/cacerts.pem dn "cn=client" outform pem > /etc/ipsec.d/private/certs/client.pem 

设置strongSwan配置文件

编辑/etc/strongswan.d/charonswanctl.conf文件:

 sudo nano /etc/strongswan.d/charonswanctl.conf 

添加以下内容:

 password_crypto = aes256sha1 

3. 配置XL2TP

编辑/etc/xl2tpd/xl2tpd.conf文件:

 [global] port = 1701 local ip = <VPN_SERVER_IP> require chap = yes refuse pap = yes require authentication = yes name = xl2tpd driver = xl2tpd.driver.xl2tpd 

替换<VPN_SERVER_IP>为您的VPN服务器的本地IP地址。

4. 配置网络连接脚本

创建一个新的网络接口配置文件:

 sudo nano /etc/network/ifpreup.d/xl2tpd 

添加以下内容:

 #!/bin/bash if [ "$IFACE" = "<INTERFACE_NAME>" ]; then     /usr/sbin/xl2tpd D c /etc/xl2tpd/xl2tpd.conf H /var/run/xl2tpd.sock U 7000:7100 P l2tp W /var/run/xl2tpd/l2tpcontrol B Z b /etc/xauth G i /var/run/xl2tpd/xl2tpd.pid g root f /etc/xl2tpd/xl2tpd.conf r /var/run/xl2tpd/xl2tpd.routes A /etc/xl2tpd/xl2tpd.allow a /etc/xl2tpd/xl2tpd.deny j /var/log/xl2tpd.log q E K L /var/log/xl2tpd.log I T 1701 U 53 p /var/run/xl2tpd/xl2tpd.pid n N M C /etc/xl2tpd/xl2tpd.conf Y x /var/run/xl2tpd/xl2tpd.secret y /etc/ipsec.d/private/certs/server.pem k /var/run/xl2tpd/xl2tpd.key F /var/run/xl2tpd/xl2tpd.crl V K /var/run/xl2tpd/xl2tpd.socket v D S w /var/run/xl2tpd/xl2tpd.state O /var/run/xl2tpd/xl2tpd.options W /var/run/xl2tpd/l2tpcontrol h "/var/run/xl2tpd/xl2tpd.sock" p "70007100" e "1701" m "0" r "0" u "root" g "0" C "/etc/xl2tpd/xl2tpd.conf" E "/var/run/xl2tpd/xl2tpd.pid" A "/etc/xl2tpd/xl2tpd.allow" a "/etc/xl2tpd/xl2tpd.deny" b "/etc/xauth" Z "/var/run/xl2tpd/l2tpcontrol" X "/var/run/xl2tpd/xl2tpd.secret" Y "/etc/ipsec.d/private/certs/server.pem" y "/etc/ipsec.d/private/certs/client.pem" K "/var/run/xl2tpd/xl2tpd.key" F "/var/run/xl2tpd/xl2tpd.crl" V L "/var/log/xl2tpd.log" I T "1701" U "53" N M C "/etc/xl2tpd/xl2tpd.conf" P "/var/run/xl2tpd.pid" Q q E "/var/run/xl2tpd.pid" J "/var/log/xl2tpd.log" j "/var/log/xl2tpd.log" i "/var/run/xl2tpd/xl2tpd.pid" f "/etc/xl2tpd/xl2tpd.conf" r "/var/run/xl2tpd/xl2tpd.routes" A "/etc/xl2tpd/xl2tpd.allow" a "/etc/xl2tpd/xl2tpd.deny" B G g "root" x "/var/run/xl2tpd/xl2tpd.secret" p "/var/run/xl2tpd.pid" v D S w "/var/run/xl2tpd/xl2tpd.state" O "/var/run/xl2tpd/xl2tpd.options" W "/var/run/xl2tpd/l2tpcontrol" h "/var/run/xl2tpd/xl2tpd.sock" p "70007100" e "1701" m "0" r "0" u "root" g "0" C "/etc/xl2tpd/xl2tpd.conf" E "/var/run/xl2tpd/xl2tpd.pid" A "/etc/xl2tpd/xl2tpd.allow" a "/etc/xl2tpd/xl2tpd.deny" b "/etc/xauth" Z "/var/run/xl2tpd/l2tpcontrol" X "/var/run/xl2tpd/xl2tpd.secret" Y "/etc/ipsec.d/private/certs/server.pem" y "/etc/ipsec.d/private/certs/client.pem" K "/var/run/xl2tpd/xl2tpd.key" F "/var/run/xl2tpd/xl2tpd.crl" V L "/var/stepbystepguidetoinstalll2tpvpnonubuntu1804withapreconfiguredipsecpskfordynamicclientssecurepointgpsslvpnsp50firmwareupdatereleasenotesofjune192019forsp50firmwareupdatereleasenotesofjune192019forsp50vpnroutersecurepointgpsslvpnroutersp5500firmwareupdatereleasenotesofjune192019forsp5500firmwareupdatereleasenotesofjune192019forsp5500vpnroutersecurepointgpsslvpnroutersp5500firmwareupdatereleasenotesofjune192019forsp5500firmwareupdatereleasenotesofjuly302019forsp5500firmwareupdatereleasenotesofjuncte19forsp5500vpnroutersecurepointgpsslvpnroutersp5500firmwareupdatereleasenotesofjuly302019forsp5500firmwareupdatereleasenotesofaugust192019forsp5500firmwareupdatereleasenotesofaugust192019forsp5500firmwareupdatereleasenotesofaugusst19forsp5500vpnroutersecurepointgpsslvpnroutersp5500firmwareupdatereleasenotesofaugust192019forsp50firmwareupdatereleasenotesofaugust192019forsp5500firmwareupdatereleasenotesofaugust192019forsp5.pem" k "/var/run/xl2tpd/xl2tpd.key" F "/var/run/xl2tpd/xl2tpd.crl" V L "/var/log/xl2_tpd.log" I T "1701" U "53" N M C "/etc/xl2tpd/xl2tpd.conf" P "/var/run/xl2tpd.pid" Q q E "/var/run/xl2tpd.pid" J "/var/log/xl2tpd.log" j "/var/log/xl2tpd.log" i "/var/run/xl2tpd/xl2tpd.pid" f "/etc/xl2tpd/xl2tpd.conf" r "/var/run/xl2tpd/xl2tpd.routes" A "/etc/xl2tpd/xl2tpd.allow" a "/etc/xl2tpd/xl2tpd.deny" B G g "root" x "/var/run/xl2tpd/xl2tpd.secret" p "/var/run/xl2tpd.pid" v D S w "/var/run/xl2tpd/xl2tpd.state" O "/var/run/xl2tpd/xl2tpd.options" W "/var/run/xl2tpd/l2tpcontrol" h "/var/run/xl2tpd/xl2tpd.sock" p "70007100" e "1701" m "0" r "0" u "root" g "0" C "/etc/xl2tpd/xl2tpd.conf" E "/var/run/xl2tpd.pid" A "/etc/xl2tpd/xl2tpd.allow" a "/etc等式中,“<INTERFACE_NAME>”应替换为网络接口的名称,eth0”。 5. 启动和使能服务 现在,您可以启动并使能strongSwan和XL2TP服务: 

sudo systemctl start strongswan

sudo systemctl enable strongswan

sudo systemctl start xl2tpd

sudo systemctl enable xl2tpd

 6. 防火墙配置 确保您的防火墙允许L2TP和IPSec通过,以下是针对UFW(Uncomplicated Firewall)的配置示例: 

sudo ufw allow 1701/udp

sudo ufw allow 500/udp

sudo ufw allow 4500/udp

 如果您使用的是不同的防火墙系统,请根据相应的文档进行调整。 7. 测试VPN连接 至此,您的L2TP/IPsec VPN服务器应该已经准备就绪,要测试VPN连接,您需要从客户端设备进行,在客户端,您需要配置L2TP连接,指定服务器的地址、用户名和密码,具体操作取决于客户端设备的操作系统和网络配置界面。 完成这些步骤后,您的L2TP over IPSec VPN服务器应该已经成功安装和配置完成。 

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