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Important ports in linux


 Important Ports

#ls –l /etc/services

ftp                           21                           ssh                          22          
telnet                      23                           imtp                        24
smtp                       25                           dns(domain)         53
dhcp                       68                           http                         80
kerberos                 88                           imap                       143
ldap                        389                         https                       443
whoami                 565                         rsync                      873
Oracle                    1521                       NFS                        2049                      
samba(cifs)           3020                       iSCSI                      3260                                      
mysql                     3306
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