n2n两种节点类型命令行及配置文件参数

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1 月 312020
 

n2n两种节点类型的命令参数参考

[root@host1 ~]# /usr/local/n2n/sbin/supernode --help
Welcome to n2n v.2.5.1.r244.46aaa86 for x86_64-unknown-linux-gnu
Built on Jan 31 2020 06:48:19
Copyright 2007-19 - ntop.org and contributors

supernode <config file> (see supernode.conf)
or
supernode -l <lport> -c <path> [-v]

-l <lport> Set UDP main listen port to <lport>
-c <path> File containing the allowed communities.
-v Increase verbosity. Can be used multiple times.
-h This help message.

[root@host1 ~]#

 

[root@host1 ~]# /usr/local/n2n/sbin/edge --help
Welcome to n2n v.2.5.1.r244.46aaa86 for x86_64-unknown-linux-gnu
Built on Jan 31 2020 06:48:19
Copyright 2007-19 - ntop.org and contributors

edge <config file> (see edge.conf)
or
edge -d <tun device> -a [static:|dhcp:]<tun IP address> -c <community> [-k <encrypt key>]
[-s <netmask>] [-u <uid> -g <gid>][-f][-T <tos>][-m <MAC address>] -l <supernode host:port>
[-p <local port>] [-M <mtu>] [-D] [-r] [-E] [-v] [-i <reg_interval>] [-L <reg_ttl>] [-t <mgmt port>] [-A] [-h]

-d <tun device> | tun device name
-a <mode:address> | Set interface address. For DHCP use '-r -a dhcp:0.0.0.0'
-c <community> | n2n community name the edge belongs to.
-k <encrypt key> | Encryption key (ASCII) - also N2N_KEY=<encrypt key>.
-s <netmask> | Edge interface netmask in dotted decimal notation (255.255.255.0).
-l <supernode host:port> | Supernode IP:port
-i <reg_interval> | Registration interval, for NAT hole punching (default 20 seconds)
-L <reg_ttl> | TTL for registration packet when UDP NAT hole punching through supernode (default 0 for not set )
-p <local port> | Fixed local UDP port.
-u <UID> | User ID (numeric) to use when privileges are dropped.
-g <GID> | Group ID (numeric) to use when privileges are dropped.
-f | Do not fork and run as a daemon; rather run in foreground.
-m <MAC address> | Fix MAC address for the TAP interface (otherwise it may be random)
| eg. -m 01:02:03:04:05:06
-M <mtu> | Specify n2n MTU of edge interface (default 1290).
-D | Enable PMTU discovery. PMTU discovery can reduce fragmentation but
| causes connections stall when not properly supported.
-r | Enable packet forwarding through n2n community.
-E | Accept multicast MAC addresses (default=drop).
-S | Do not connect P2P. Always use the supernode.
-T <tos> | TOS for packets (e.g. 0x48 for SSH like priority)
-v | Make more verbose. Repeat as required.
-t <port> | Management UDP Port (for multiple edges on a machine).

Environment variables:
N2N_KEY | Encryption key (ASCII). Not with -k.
[root@host1 ~]#

使用n2n构建二层点对点可穿透VPN服务

 网络技术  No Responses »
1 月 312020
 

在三台主机上分别安装n2n并进行配置

host1:supernode/edge(192.168.172.1)
host2:edge(192.168.172.2)
host3:edge(192.168.172.3)
Community:linuxcache
Pre-Shared Key:5tgb6yhn7ujm

禁用防火墙

[root@host1 ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
[root@host1 ~]# systemctl stop firewalld
[root@host1 ~]#

安装工具

[root@host1 ~]# yum -y install git gcc automake

下载源代码

https://github.com/ntop/n2n.git

[root@host1 ~]# git clone https://github.com/ntop/n2n.git
Cloning into 'n2n'...
remote: Enumerating objects: 1572, done.
remote: Total 1572 (delta 0), reused 0 (delta 0), pack-reused 1572
Receiving objects: 100% (1572/1572), 970.16 KiB | 0 bytes/s, done.
Resolving deltas: 100% (858/858), done.
[root@host1 ~]#

编译安装

[root@host1 ~]# cd n2n/
[root@host1 n2n]# ./autogen.sh
[root@host1 n2n]# ./configure
[root@host1 n2n]# make
[root@host1 n2n]# make PREFIX=/usr/local/n2n/ install

配置host1节点supernode服务脚本

[root@host1 ~]# vi /usr/lib/systemd/system/n2n_supernode.service
[Unit]
Description=n2n supernode
Wants=network-online.target
After=network-online.target

[Service]
ExecStart=/usr/local/n2n/sbin/supernode -l 1200

[Install]
WantedBy=multi-user.target

注册服务并启动服务

[root@host1 ~]# systemctl enable n2n_supernode
Created symlink from /etc/systemd/system/multi-user.target.wants/n2n_supernode.service to /usr/lib/systemd/system/n2n_supernode.service.
[root@host1 ~]# systemctl start n2n_supernode
[root@host1 ~]#

配置host1节点edge服务脚本

[root@host1 ~]# vi /usr/lib/systemd/system/n2n_edge.service
[Unit]
Description=n2n edge
Wants=network-online.target
After=network-online.target n2n_supernode.service

[Service]
ExecStart=/usr/local/n2n/sbin/edge -l localhost:1200 -c linuxcache -a 192.168.172.1 -k 5tgb6yhn7ujm -f

[Install]
WantedBy=multi-user.target

注册服务并启动服务

[root@host1 ~]# systemctl enable n2n_edge
Created symlink from /etc/systemd/system/multi-user.target.wants/n2n_edge.service to /usr/lib/systemd/system/n2n_edge.service.
[root@host1 ~]# systemctl start n2n_edge
[root@host1 ~]#

查看host1接口信息

[root@host1 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 56:00:02:83:72:1e brd ff:ff:ff:ff:ff:ff
inet 144.202.116.133/23 brd 144.202.117.255 scope global dynamic eth0
valid_lft 84884sec preferred_lft 84884sec
inet6 fe80::5400:2ff:fe83:721e/64 scope link
valid_lft forever preferred_lft forever
3: edge0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1290 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether de:23:7d:c9:85:e0 brd ff:ff:ff:ff:ff:ff
inet 192.168.172.1/24 brd 192.168.172.255 scope global edge0
valid_lft forever preferred_lft forever
inet6 fe80::dc23:7dff:fec9:85e0/64 scope link
valid_lft forever preferred_lft forever
[root@host1 ~]#

配置host2节点edge服务脚本

[root@host2 ~]# vi /usr/lib/systemd/system/n2n_edge.service
[Unit]
Description=n2n edge
Wants=network-online.target
After=network-online.target

[Service]
ExecStart=/usr/local/n2n/sbin/edge -l 144.202.116.133:1200 -c linuxcache -a 192.168.172.2 -k 5tgb6yhn7ujm -f

[Install]
WantedBy=multi-user.target

注册服务并启动服务

[root@host2 ~]# systemctl enable n2n_edge
Created symlink from /etc/systemd/system/multi-user.target.wants/n2n_edge.service to /usr/lib/systemd/system/n2n_edge.service.
[root@host2 ~]# systemctl start n2n_edge
[root@host2 ~]#

查看host2接口信息

[root@host2 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 56:00:02:83:72:1f brd ff:ff:ff:ff:ff:ff
inet 149.28.93.246/23 brd 149.28.93.255 scope global dynamic eth0
valid_lft 78885sec preferred_lft 78885sec
inet6 fe80::5400:2ff:fe83:721f/64 scope link
valid_lft forever preferred_lft forever
3: edge0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1290 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether ae:04:8c:77:da:be brd ff:ff:ff:ff:ff:ff
inet 192.168.172.2/24 brd 192.168.172.255 scope global edge0
valid_lft forever preferred_lft forever
inet6 fe80::ac04:8cff:fe77:dabe/64 scope link
valid_lft forever preferred_lft forever
[root@host2 ~]#

检测节点连通性（在host2主机上）

[root@host2 ~]# ping -c 4 192.168.172.1
PING 192.168.172.1 (192.168.172.1) 56(84) bytes of data.
64 bytes from 192.168.172.1: icmp_seq=1 ttl=64 time=0.877 ms
64 bytes from 192.168.172.1: icmp_seq=2 ttl=64 time=0.733 ms
64 bytes from 192.168.172.1: icmp_seq=3 ttl=64 time=0.844 ms
64 bytes from 192.168.172.1: icmp_seq=4 ttl=64 time=0.958 ms

--- 192.168.172.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.733/0.853/0.958/0.080 ms
[root@host2 ~]#

配置host3节点edge服务脚本

[root@host3 ~]# vi /usr/lib/systemd/system/n2n_edge.service
[Unit]
Description=n2n edge
Wants=network-online.target
After=network-online.target

[Service]
ExecStart=/usr/local/n2n/sbin/edge -l 144.202.116.133:1200 -c linuxcache -a 192.168.172.3 -k 5tgb6yhn7ujm -f

[Install]
WantedBy=multi-user.target

注册服务并启动服务

[root@host3 n2n]# systemctl enable n2n_edge
Created symlink from /etc/systemd/system/multi-user.target.wants/n2n_edge.service to /usr/lib/systemd/system/n2n_edge.service.
[root@host3 n2n]# systemctl start n2n_edge
[root@host3 n2n]#

查看host3接口信息

[root@host3 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 56:00:02:83:80:03 brd ff:ff:ff:ff:ff:ff
inet 45.32.224.80/22 brd 45.32.227.255 scope global dynamic eth0
valid_lft 78416sec preferred_lft 78416sec
inet6 fe80::5400:2ff:fe83:8003/64 scope link
valid_lft forever preferred_lft forever
3: edge0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1290 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether d2:31:7d:96:46:41 brd ff:ff:ff:ff:ff:ff
inet 192.168.172.3/24 brd 192.168.172.255 scope global edge0
valid_lft forever preferred_lft forever
inet6 fe80::d031:7dff:fe96:4641/64 scope link
valid_lft forever preferred_lft forever
[root@host3 ~]#

检测节点连通性（在host3主机上）

[root@host3 ~]# ping -c 4 192.168.172.1
PING 192.168.172.1 (192.168.172.1) 56(84) bytes of data.
64 bytes from 192.168.172.1: icmp_seq=1 ttl=64 time=59.0 ms
64 bytes from 192.168.172.1: icmp_seq=2 ttl=64 time=25.9 ms
64 bytes from 192.168.172.1: icmp_seq=3 ttl=64 time=26.0 ms
64 bytes from 192.168.172.1: icmp_seq=4 ttl=64 time=27.2 ms

--- 192.168.172.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 25.963/34.564/59.058/14.150 ms
[root@host3 ~]# ping -c 4 192.168.172.2
PING 192.168.172.2 (192.168.172.2) 56(84) bytes of data.
64 bytes from 192.168.172.2: icmp_seq=1 ttl=64 time=52.1 ms
64 bytes from 192.168.172.2: icmp_seq=2 ttl=64 time=26.0 ms
64 bytes from 192.168.172.2: icmp_seq=3 ttl=64 time=26.0 ms
64 bytes from 192.168.172.2: icmp_seq=4 ttl=64 time=25.9 ms

--- 192.168.172.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 25.963/32.542/52.115/11.301 ms
[root@host3 ~]#

检测节点连通性（在host1主机上）

[root@host1 ~]# ping -c 4 192.168.172.2
PING 192.168.172.2 (192.168.172.2) 56(84) bytes of data.
64 bytes from 192.168.172.2: icmp_seq=1 ttl=64 time=1.43 ms
64 bytes from 192.168.172.2: icmp_seq=2 ttl=64 time=0.666 ms
64 bytes from 192.168.172.2: icmp_seq=3 ttl=64 time=0.840 ms
64 bytes from 192.168.172.2: icmp_seq=4 ttl=64 time=0.921 ms

--- 192.168.172.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 0.666/0.964/1.432/0.287 ms
[root@host1 ~]# ping -c 4 192.168.172.3
PING 192.168.172.3 (192.168.172.3) 56(84) bytes of data.
64 bytes from 192.168.172.3: icmp_seq=1 ttl=64 time=33.4 ms
64 bytes from 192.168.172.3: icmp_seq=2 ttl=64 time=26.0 ms
64 bytes from 192.168.172.3: icmp_seq=3 ttl=64 time=26.3 ms
64 bytes from 192.168.172.3: icmp_seq=4 ttl=64 time=25.8 ms

--- 192.168.172.3 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 25.859/27.923/33.456/3.202 ms
[root@host1 ~]#