Numbers to Remember Flashcards
1
Q
TCP 20
A
FTP Data
2
Q
TCP 21
A
FTP Control
3
Q
22 TCP,UDP
A
SSH
4
Q
23 TCP
A
Telnet
5
Q
25 TCP
A
SMTP
6
Q
53 TCP, UDP
A
DNS
7
Q
67 UDP
A
DHCP, BOOTP Server
8
Q
68 UDP
A
DHCP, BOOTP Client
9
Q
69 UDP
A
TFTP
10
Q
80 TCP
A
HTTP
11
Q
88 TCP
A
Kerberos
12
Q
110 TCP
A
POP3
13
Q
119 TCP
A
NNTP
14
Q
123 UDP
A
NTP
15
Q
135 TCP, UDP
A
MS EPMAP (DCE/RPC Locator)
16
Q
137 TCP, UDP
A
NetBIOS Name Service
17
Q
138 TCP, UDP
A
NetBIOS Datagram Service
18
Q
139 TCP, UDP
A
NetBIOS Session Service
19
Q
143 TCP, UDP
A
IMAP
20
Q
161 TCP, UDP
A
SNMP
21
Q
162 TCP, UDP
A
SNMP Trap
22
Q
179 TCP
A
BGP
23
Q
389 TCP, UDP
A
LDAP
24
Q
443 TCP, UDP
A
HTTPS
25
445 TCP
MS Active Directory DS
26
465 TCP
SMTP over SSL
27
500 UDP
ISAKMP
28
515 TCP
LPD
29
1025 TCP
NFS or IIS
30
1080 TCP
SOCKS Proxy
31
1701 UDP
L2TP
L2F - Layer 2 Forwarding Protocol
32
1723 TCP, UDP
MS PPTP
33
1812 TCP, UDP
RADIUS authentication protocol
34
1813 TCP, UDP
RADIUS accounting protocol
35
3389 TCP
MS RDP (Terminal Services)
36
ICMP Type 0
Echo Reply
37
ICMP Type 1 and 2
Reserved
38
ICMP Type 3 Code 0
| destination unreachable
Destination Network unavailable
39
ICMP Type 3 Code 1
| destination unreachable
Destination Host unreachable
40
ICMP Type 3 Code 2
| destination unreachable
Destination Protocol unreachable
41
ICMP Type 3 Code 3
| destination unreachable
Destination port unreachable
42
ICMP Type 3 Code 4
| destination unreachable
Fragmentation Required and DF Flag set
43
ICMP Type 3 Code 5
| destination unreachable
Source Route failed
44
ICMP Type 3 Code 6
| destination unreachable
Destination network unknown
45
ICMP Type 3 Code 7
| destination unreachable
Destination host unknown
46
ICMP Type 3 Code 8
| destination unreachable
Source host isolated
47
ICMP Type 3 Code 9
| destination unreachable
Network administratively prohibited
48
ICMP Type 3 Code 10
| destination unreachable
Host administratively prohibited
49
ICMP Type 3 Code 11
| destination unreachable
Network unreachable for TOS
50
ICMP Type 3 Code 12
| destination unreachable
Host unreachable for TOS
51
ICMP Type 3 Code 13
| destination unreachable
Communication administratively prohibited
52
ICMP Type 4
| (source quench
0 Source quench (congestion control)
53
ICMP Type 5
| redirect
0 redirect datagram for network
1 redirect datagram for host
2 redirect datagram for TOS and network
3 redirect datagram for TOS and host
54
ICMP Type 8
| echo request
0 echo request
55
ICMP Type 9
| router advertisement
0 router advertisement
56
ICMP Type 10
| Router solicitation
0 router discovery/selection/solicitation
57
ICMP Type 11
| Time Exceeded
0 TTL expired in transit
1 Fragment reassembly time exceeded
58
ICMP Type 12
| Parameter problem bad header
0 pointer indicates the error
1 missing a required option
2 bad length
59
ICMP Type 13
| Timestamp
0 timestamp
60
ICMP Type 14
| Timestamp reply
0 Timestamp reply
61
ICMP Type 15
| Information request
0 information request
62
ICMP Type 16
| information reply
0 information reply
63
ICMP Type 17
| address mask request
0 address mask request
64
ICMP Type 18
| address mask reply
0 address mask reply
65
ICMP Type 30
| trace route
0 information request
