Ubuntu
sudo sed -i 's!http://us.archive.ubuntu.com!https://mirrors.tuna.tsinghua.edu.cn!' /etc/apt/sources.list
Ubuntu默认是不允许root远程登录的,我们可以修改
PermitRootLogin
的值,改变root登录方式。vi /etc/ssh/sshd_config
PermitRootLogin yes # 允许root用密码和Public Key方式登录
PermitRootLogin prohibit-password #
PermitRootLogin without-password # 只允许root用public key认证方式登录
PermitRootLogin no # 不允许root登录
下载hosts文件,内容添加到
/etc/hosts
sudo apt-get install dnsmasq
sudo mv ~/dnsmasq.conf /etc/dnsmasq.conf
查看局域网内IP的Mac地址
$ arp
Address HWtype HWaddress Flags Mask Iface
10.10.0.11 ether 00:04:ff:ff:ff:d0 C eth0
10.10.0.16 ether 00:04:ff:ff:ff:a6 C eth0
raspbmc.local ether 00:1f:ff:ff:ff:9c C eth0
10.10.0.19 ether 00:04:ff:ff:ff:c9 C eth0
10.10.0.12 ether bc:f5:ff:ff:ff:93 C eth0
10.10.0.17 ether 00:04:ff:ff:ff:57 C eth0
10.10.0.1 ether 20:4e:ff:ff:ff:30 C eth0
HPF2257E.local ether a0:b3:ff:ff:ff:7e C eth0
10.10.0.15 ether 00:04:ff:ff:ff:b9 C eth0
tim ether 00:22:ff:ff:ff:af C eth0
10.10.0.13 ether 60:be:ff:ff:ff:e0 C eth0
带宽测试
apt install iperf
测试方法:准备2台 Linux 云主机(例如CentOS 6.5),一台做server,一台做client,云主机推荐配置为 2核4G
server端命令如下:
iperf -s
client端命令如下:
iperf -c 10.x.x.x(server内网IP) -i 2 -t 30 -P 50
检查IP知否联网
apt install iputils-ping -y
查看进程
apt install procps -y
查看局域网内IP和Mac地址信息
apt install nmap
root@192-168-1-141:~# nmap -sn 192.168.1.0/24
Starting Nmap 7.01 ( https://nmap.org ) at 2018-04-25 16:52 CST
Nmap scan report for 192.168.1.1
Host is up (0.00046s latency).
MAC Address: FA:FF:FF:FF:FF:FF (Unknown)
Nmap scan report for 192.168.1.127
Host is up (-0.099s latency).
MAC Address: 52:54:00:66:42:AF (QEMU virtual NIC)
Nmap scan report for 192.168.1.185
Host is up (-0.100s latency).
MAC Address: 52:54:00:3F:18:04 (QEMU virtual NIC)
Nmap scan report for 192.168.1.128
Host is up.
Nmap scan report for 192-168-1-141 (192.168.1.141)
Host is up.
Nmap done: 256 IP addresses (5 hosts up) scanned in 2.29 seconds
检查DNS解析
apt install dnsutils -y
root@192-168-1-141:~# nslookup www.tanmer.com 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: www.tanmer.com
Address: 120.132.67.49
apt install mailutils -y
配置sudo用户不需要密码
sudo sudovi
在打开的文件结尾添加如下内容(注意,一定是文件结尾,否则可能不成功):
ubuntu ALL=(ALL) NOPASSWD:ALL
重新登录,测试一下sudo应该不会出现密码提示。
Last modified 5yr ago