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CHATTR command to lock important information files on the server, such as/etc/passwd,/etc/group,/etc/shadow,/etc/sudoers,/etc/sysconfig/iptables,/var/spool/ Cron/root, etc.6) Disable ping (echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all)Today we mainly say the server security login whitelist settings, through the foll
Linux Server Secure Login considerations
Remove unnecessary users
Remove unnecessary groups of users
Set the responsible login password (case, number, letter, underscore, special character)
Disable root for remote login, use normal user
As PHP becomes more popular, Linux vps/servers are used more and more, and Linux security issues need to be enhanced, if you install denyhosts and set up email reminders, you may be subject to several letters each day denyhosts The reporting will come to break the SSH password IP join/etc/hosts.deny.
There are two types of Linux ssh logins:
1, the use of password Authentication login
Typically, a VPS or server
The secure client logs into the server via a key:1. Secure Client SettingsGenerate key650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M02/8C/1A/wKioL1hiT2_i5IZJAABxAlPoYyA079.png-wh_500x0-wm_3 -wmp_4-s_1034965126.png "title=" 1.png "alt=" Wkiol1hit2_i5izjaabxalpoyya079.png-wh_50 "/>Click Next:650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M01/8C/1A
In the previous article to ensure that Linux VPS and server more secure Xshell set key login article has been shared to Xshell use the key to login to our VPS server to ensure the safety of the machine, but many students are not like the old left with Xshell, There are still
identification string from UNKNOWNNov 4 13:25:26 Server sshd[12201]: Did not receive identification string from UNKNOWNNov 4 13:26:26 Server sshd[13312]: Did not receive identification string from UNKNOWNNov 4 13:27:26 Server sshd[13400]: Did not receive identification string from UNKNOWNNov 4 13:28:26 Server sshd[135
prohibits password login. For the management of multiple servers, I am a direct replacement of the file, so simple and maintain the persistence.// Local SCP -P [Port] sshd_config [email protected]:/your/home///serversudoCP ~/sshd_config/etc/ssh/sshd_config4. Iptables settingsudo 1 22000-J ACCEPTsudo service iptables Save5. Restart the sshd service, test loginsudo service sshd restartSSH [email protected]-p [Port]Note: Do not close the previously ope
Windows ServerSecurity includes many layers,Secure LoginIt is undoubtedly the most basic and critical link in many layers. Next let's take a look at how to securely log on to an enterprise Windows Server:
1. Learn to use the Run As Administrator command to manage access
When maintaining a Windows server, you often need the administrator role to perform this opera
grasp the law, but also hold a cautious attitude, convergence, and in the use of law, but also to repeat the practice, Pao "Thousands of cattle to" the same, keep repeating, will eventually realize the truth of things. Therefore, as a novice programmer, it is more necessary to accumulate their own code through a lot of code practice.Well, there's not much to gossip about. Go directly to our today's topic ———— ASP, and use SQL Server to implement regi
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