Immer wieder hilfreich -> Netstat
netstat -lt
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Aktive Internetverbindungen (Nur Server) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 localhost.localdom:9043 *:* LISTEN tcp 0 0 xxxx-xxxxx.tld:domain *:* LISTEN tcp 0 0 localhost.locald:domain *:* LISTEN tcp 0 0 *:ftp *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 localhost.localdoma:953 *:* LISTEN tcp 0 0 *:smtp *:* LISTEN tcp 0 0 localhost.localdom:6010 *:* LISTEN tcp 0 0 xxxx-xxxxx.tld:10011 *:* LISTEN tcp 0 0 localhost.localdom:9020 *:* LISTEN tcp 0 0 *:sieve *:* LISTEN tcp 0 0 *:imaps *:* LISTEN tcp 0 0 *:pop3s *:* LISTEN tcp 0 0 localhost.localdo:10024 *:* LISTEN tcp 0 0 localhost.localdo:10025 *:* LISTEN tcp 0 0 *:mysql *:* LISTEN tcp 0 0 *:submission *:* LISTEN tcp 0 0 localhost.localdo:11211 *:* LISTEN tcp 0 0 localhost.localdom:9037 *:* LISTEN tcp 0 0 *:pop3 *:* LISTEN tcp 0 0 *:imap2 *:* LISTEN tcp 0 0 xxxx-xxxxx.tld:30033 *:* LISTEN tcp 0 0 *:ssmtp *:* LISTEN tcp 0 0 localhost.localdo:21201 *:* LISTEN tcp6 0 0 [::]:domain [::]:* LISTEN tcp6 0 0 [::]:ftp [::]:* LISTEN tcp6 0 0 [::]:ssh [::]:* LISTEN tcp6 0 0 localhost:953 [::]:* LISTEN tcp6 0 0 [::]:smtp [::]:* LISTEN tcp6 0 0 localhost:6010 [::]:* LISTEN tcp6 0 0 [::]:https [::]:* LISTEN tcp6 0 0 [::]:imaps [::]:* LISTEN tcp6 0 0 [::]:pop3s [::]:* LISTEN tcp6 0 0 [::]:submission [::]:* LISTEN tcp6 0 0 [::]:pop3 [::]:* LISTEN tcp6 0 0 [::]:imap2 [::]:* LISTEN tcp6 0 0 [::]:http-alt [::]:* LISTEN tcp6 0 0 [::]:http [::]:* LISTEN tcp6 0 0 [::]:tproxy [::]:* LISTEN tcp6 0 0 [::]:ssmtp [::]:* LISTEN |