CentOS中的防火牆基本區別python
CentOS7防火牆名稱是:Firewalld (在下使用的系統即是:CentOS7)dom
7如下版本名字是:Netfilter 工具
請謹記:Iptables 它僅僅只是一個操做防火牆的工具!學習
在測試環境中,請把SELinux,Firewalld關閉後,Windows便可訪問Vsftpd測試
傳說有一些大神,經過Firewalld把Vsftpd的服務端口加入防火牆中,意味着防火牆是開啓的狀態,Windows也可以直接去訪問。在下對防火牆瞭解不祥,請參考書籍或視頻進行了解!spa
新手硬知識點:Linux安裝完Vsftpd後,能夠先不去碰Vsftpd的配置文件.它在默認的狀況下,能夠使用匿名用戶登入。code
(前提條件:須要關閉SELinux,Firewalld),視頻
案發現場:blog
[root@localhost ~]# systemctl status vsftpd
â vsftpd.service - Vsftpd ftp daemon
Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; enabled; vendor prese t: disabled)
Active: active (running) since å -----> Vsftpd running
2018-04-28 23:07:05 CST; 3 days ago
Process: 1006 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf (code=exited, status=0/SUCCESS)
Main PID: 1025 (vsftpd)
CGroup: /system.slice/vsftpd.service
ââ1025 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.confip
4æ 28 23:07:04 localhost.localdomain systemd[1]: Starting Vsftpd ftp daemon...
4æ 28 23:07:05 localhost.localdomain systemd[1]: Started Vsftpd ftp daemon.
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost ~]# LANG=C
[root@localhost ~]# systemctl status firewalld
* firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2018-04-28 23:07:01 CST; 3 days ago ------>Firewalld running
Docs: man:firewalld(1)
Main PID: 697 (firewalld)
CGroup: /system.slice/firewalld.service
`-697 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
Apr 28 23:07:00 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
Apr 28 23:07:01 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: ICMP type 'beyond-scope' is not supported by the kernel for ipv6.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: beyond-scope: INVALID_ICMPTYPE: No supported ICMP type., ign...time.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: ICMP type 'failed-policy' is not supported by the kernel for ipv6.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: failed-policy: INVALID_ICMPTYPE: No supported ICMP type., ig...time.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: ICMP type 'reject-route' is not supported by the kernel for ipv6.
Apr 28 23:07:01 localhost.localdomain firewalld[697]: WARNING: reject-route: INVALID_ICMPTYPE: No supported ICMP type., ign...time.
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost ~]# systemctl stop firewalld ---->stop firewalld
[root@localhost ~]#
以上,即是在下學習Linux的時候記錄,若有不正之處,請與在下聯繫!
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