1
Q
UDP 49
A
TACACS
2
Q
<= 1023
A
reserved
3
Q
1024-65535
A
ephemeral
4
Q
TCP 23
A
telnet
5
Q
TCP 20
A
FTP data connection
6
Q
TCP 21
A
FTP control connection
7
Q
UDP 69
A
TFTP
8
Q
TCP 22
A
SSH
9
Q
TCP 25
A
SMTP
10
Q
TCP 110
A
POPv3
11
Q
TCP 143
A
IMAP
12
Q
TCP 53
A
DNS
13
Q
UDP 53
A
DNS
14
Q
UDP 161
A
SNMP
15
Q
TCP 80
A
HTTP
16
Q
TCP 443
A
HTTPS
17
Q
UDP 67
A
BOOTP/DHCP servers
18
Q
UDP 68
A
BOOTP/DHCP clients
19
Q
TCP 1080
A
SOCKS
20
Q
TCP 1723
A
PPTP
21
Q
TCP 513
A
rlogin
22
Q
tcp 514
A
rsh
23
Q
TCP 5900
A
VNC
24
Q
TCP 3389
A
RDP
25
TCP 6667
IRC
