0x01 前言


还要配置DHCP服务,将DHCP的网关使用iptables NAT进行转发到PPPoE,由此来让我家里的设备连接上网络。但这篇文章并不设计DHCP服务器的部分,DHCP的配置我过几天在写。

0x02 安装


[root@test ~]# yum install rp-pppoe -y



0x03 配置


[root@test ~]# pppoe-setup

Welcome to the PPPoE client setup.  First, I will run some checks on
your system to make sure the PPPoE client is installed properly...


Enter your Login Name (default root): [email protected]


Enter the Ethernet interface connected to the PPPoE modem
For Solaris, this is likely to be something like /dev/hme0.
For Linux, it will be ethX, where 'X' is a number.
(default eth0): 

Do you want the link to come up on demand, or stay up continuously?
If you want it to come up on demand, enter the idle time in seconds
after which the link should be dropped.  If you want the link to
stay up permanently, enter 'no' (two letters, lower-case.)
NOTE: Demand-activated links do not interact well with dynamic IP
addresses.  You may have some problems with demand-activated links.
Enter the demand value (default no): 


Please enter the IP address of your ISP's primary DNS server.
If your ISP claims that 'the server will provide dynamic DNS addresses',
enter 'server' (all lower-case) here.
If you just press enter, I will assume you know what you are
doing and not modify your DNS setup.

Enter the DNS information here:

Please enter the IP address of your ISP's secondary DNS server.
If you just press enter, I will assume there is only one DNS server.
Enter the secondary DNS server address here: 


Please enter your Password: 
Please re-enter your Password: 


Please enter 'yes' (three letters, lower-case.) if you want to allow
normal user to start or stop DSL connection (default yes): 


Please choose the firewall rules to use.  Note that these rules are
very basic.  You are strongly encouraged to use a more sophisticated
firewall setup; however, these will provide basic security.  If you
are running any servers on your machine, you must choose 'NONE' and
set up firewalling yourself.  Otherwise, the firewall rules will deny
access to all standard servers like Web, e-mail, ftp, etc.  If you
are using SSH, the rules will block outgoing SSH connections which
allocate a privileged source port.

The firewall choices are:
0 - NONE: This script will not set any firewall rules.  You are responsible
          for ensuring the security of your machine.  You are STRONGLY
          recommended to use some kind of firewall rules.
1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation
2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway
                for a LAN
Choose a type of firewall (0-2): 0

Start this connection at boot time

Do you want to start this connection at boot time?
Please enter no or yes (default no):yes

** Summary of what you entered **

Ethernet Interface: eth0
User name:          [email protected]
Activate-on-demand: No
Primary DNS:
Firewalling:        NONE
User Control:       yes

Accept these settings and adjust configuration files (y/n)? y

Adjusting /etc/sysconfig/network-scripts/ifcfg-ppp0
Adjusting /etc/resolv.conf
  (But first backing it up to /etc/resolv.conf.bak)
Adjusting /etc/ppp/chap-secrets and /etc/ppp/pap-secrets
  (But first backing it up to /etc/ppp/chap-secrets.bak)
  (But first backing it up to /etc/ppp/pap-secrets.bak)

Congratulations, it should be all set up!

Type '/sbin/ifup ppp0' to bring up your xDSL link and '/sbin/ifdown ppp0'
to bring it down.
Type '/sbin/pppoe-status /etc/sysconfig/network-scripts/ifcfg-ppp0'
to see the link status.

0x04 启动 | 状态 | 使用


[root@test ~]# pppoe-start


[root@base ~]# pppoe-status 
pppoe-status: Link is up and running on interface ppp0
5: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
    inet peer scope global ppp0
       valid_lft forever preferred_lft forever


[root@base ~]# ip route 
default dev ppp0  scope link dev ens8  proto kernel  scope link  src  metric 100 dev ppp0  proto kernel  scope link  src

如果需要让DHCP网关也能连接上网络,可以通过以下的iptables NAT实现功能需求。当然,前提是需要配置好DHCP服务:

iptables -t nat -A POSTROUTING -s -o ppp0 -j MASQUERADE


0x05 结语


HP DL380 G6 内存配置