Author: uki

H3C交换机堆叠配置(2台)

Posted by uki on in Swith

光纤连线方式（建议配置完交换机后再连接）
A:port-23—-B:port-24
A:port-23—-B:port-24
交换机A配置如下：

interface range gigabitethernet 1/0/23 to gigabitethernet 1/0/24
shutdown

irf-port 1/1
port group interface gigabitethernet 1/0/23
port group interface gigabitethernet 1/0/24

interface range gigabitethernet 1/0/23 to gigabitethernet 1/0/24
undo shutdown
quit
save
irf-port-configuration active

交换机B配置如下：

irf member 1 renumber 2
reboot

interface range interface gigabitethernet 2/0/23 to interface gigabitethernet 2/0/24
shutdown

irf-port 2/2
port group interface interface gigabitethernet 2/0/23
port group interface interface gigabitethernet 2/0/24

interface range interface gigabitethernet 2/0/23 to interface gigabitethernet 2/0/24
undo shutdown
quit
save
irf-port-configuration active

最记得把线接好即可

ubuntu root账号无法用ssh登录

Posted by uki on in Linux

Ubuntu默认情况下root账号无法用ssh登录，需要修改认证信息即可。

1、进行编辑: vi /etc/ssh/sshd_config
2、找到PermitRootLogin添加一行PermitRootLogin yes，如下:

#Authentication:

#LoginGraceTime 2m

#PermitRootLogin prohibit-password

#PermitRootLogin yes

#StrictModes yes#MaxAuthTries 6

#MaxSessions 10

保存退出后，重启ssh服务，输入命令:etc/init.d/ssh restart 即可。

Linux系统限制SSH ip访问

Posted by uki on in Linux

1、vi /etc/hosts.allow <允许访问的主机>
sshd:XXX.XXX.XXX.XXX:allow <单个主机>
sshd:XXX.XXX.XXX.*:allow <允许1个网段主机>

2、vi /etc/hosts.deny <黑名单>
sshd:xxx.xxx.xxx.xxx:deny <禁止单个主机访问>
sshd:ALL <禁止所有主机访问>

3、systemctl restart sshd <重新启动SSH 服务>