Estos son los resultados del escaneo de nmap en mi servidor (usado para correo electrónico y servicio web) desde un escaneo remoto. ¿Qué puertos están en peligro y por qué?
PORT STATE SERVICE
21/tcp open ftp
25/tcp open smtp
42/tcp filtered nameserver
53/tcp open domain
69/tcp filtered tftp
80/tcp open http
110/tcp open pop3
135/tcp filtered msrpc
137/tcp filtered netbios-ns
138/tcp filtered netbios-dgm
139/tcp filtered netbios-ssn
143/tcp open imap
161/tcp filtered snmp
162/tcp filtered snmptrap
179/tcp filtered bgp
443/tcp open https
445/tcp filtered microsoft-ds
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
1028/tcp filtered unknown
1080/tcp filtered socks
1214/tcp filtered fasttrack
1241/tcp filtered nessus
2077/tcp open unknown
2078/tcp open unknown
2082/tcp open infowave
2083/tcp open radsec
2086/tcp open gnunet
2087/tcp open eli
2095/tcp open nbx-ser
2096/tcp open nbx-dir
3127/tcp filtered unknown
3128/tcp filtered squid-http
3306/tcp open mysql
5554/tcp filtered sgi-esphttp
6666/tcp filtered irc
6667/tcp filtered irc
6668/tcp filtered irc
6777/tcp filtered unknown
7007/tcp filtered afs3-bos
9996/tcp filtered unknown
22816/tcp open unknown
51180/tcp filtered unknown
42/udp open|filtered nameserver
53/udp open domain?
69/udp open|filtered tftp
135/udp open|filtered msrpc
137/udp open|filtered netbios-ns
138/udp open|filtered netbios-dgm
139/udp open|filtered netbios-ssn
161/udp open|filtered snmp
|_snmp-hh3c-logins: TIMEOUT
|_snmp-win32-shares: TIMEOUT
162/udp open|filtered snmptrap
1701/udp open|filtered L2TP