Rank
|
Protocol
|
1.
|
DNS
|
2.
|
HTTP/HTTPS
|
3.
|
VPN
|
4.
|
DHCP
|
5.
|
VOIP
|
6.
|
NFS
|
7.
|
SSH
|
8.
|
SNMP
|
9.
|
SMTP
|
10.
|
FTP
|
11.
|
BGP
|
12.
|
CFENGINE
|
13.
|
SIP
|
14.
|
CLEARCASE
|
15.
|
KERBEROS
|
16.
|
NTP
|
17.
|
NIS
|
18.
|
sftp
|
19.
|
TELNET
|
20.
|
RSYNC
|