25번 포트쓰는놈이 잇는데 이걸 어떻게 죽여야 하나요?
[root@localhost ~]# systemctl stop sendmail.service
Failed to stop sendmail.service: Unit sendmail.service not loaded.
[root@localhost ~]# nmap -sT localhost
Starting Nmap 6.40 ( http://nmap.org ) at 2020-01-15 09:45 KST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00053s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 993 closed ports
PORT STATE SERVICE
25/tcp open smtp
80/tcp open http
111/tcp open rpcbind
631/tcp open ipp
1521/tcp open oracle
2002/tcp open globe
3306/tcp open mysql
이지포토
[root@localhost ~]# systemctl stop postfix.service
[root@localhost ~]# nmap -sT localhost
Starting Nmap 6.40 ( http://nmap.org ) at 2020-01-15 09:58 KST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00085s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 994 closed ports
PORT STATE SERVICE
80/tcp open http
111/tcp open rpcbind
631/tcp open ipp
1521/tcp open oracle
2002/tcp open globe
3306/tcp open mysql