The UDP Relay Table window displays the following parameters:
UDP Destination Port — The destination UDP port ID number of UDP frames to be relayed. The following table lists UDP Port allocations.
Note: UDP Ports 137 and 138 are the most commonly used.
|
UDP |
Port # |
Acronym Application |
|
7 |
ECHO |
Echo |
|
11 |
USERS |
Active Users |
|
13 |
DAYTIME |
Daytime |
|
15 |
NETSTAT |
Netstat |
|
17 |
QUOTE |
Quote Of The Day |
|
19 |
CHARGEN |
Character Generator |
|
37 |
TIME |
Time |
|
42 |
NAMESERVER |
Host Name Server |
|
43 |
NICNAME |
Who Is |
|
53 |
DOMAIN |
Domain Name Server |
|
67 |
BOOTPS |
Bootstrap Protocol Server |
|
68 |
BOOTPC |
Bootstrap Protocol Client |
|
69 |
TFTP |
Trivial File Transfer |
|
111 |
SUNRPC |
Sun Microsystems Rpc |
|
123 |
NTP |
Network time |
|
137 |
Net Bios Name Service |
NT Server to Station Connections |
|
138 |
Net Bios Datagram Service |
NT Server to Station Connections |
|
139 |
NetBios Session Service |
NT Server to Station Connections |
|
161 |
SNMP |
Simple Network Management Protocol |
|
162 |
SNMP |
Simple Network Management Traps |
|
513 |
|
Unix Rwho Daemon |
|
514 |
syslog |
System Log |
|
525 |
timed |
Time Daemon |
Source IP Address — The input IP interface that relays UDP frames. If this field is 255.255.255.255, UDP frames from all interfaces are relayed. The following address ranges are invalid:
0.0.0.0 to 0.255.255.255
127.0.0.0 to 127.255.255.255
Destination IP Address — The IP interface that receives UDP frame relays. If this field is 0.0.0.0, UDP frames are discarded. If this field is 255.255.255.255, UDP frames are flooded to all IP interfaces.
An example of UDP Relay Table use: To relay all UDP frames to interface 7.7.7.7 arriving at UDP port 138, while discarding those frames which come from the Source IP Addresses 1.1.1.1 and 2.2.2.2, type in these table entries:
|
Port |
Source |
Destination |
|
138 |
1.1.1.1 |
0.0.0.0 |
|
138 |
2.2.2.2 |
0.0.0.0 |
|
138 |
255.255.255.255 |
7.7.7.7 |
To edit a UDP Relay Table entry:
Click . The UDP Relay Table Edit window is displayed.
Edit the required table entry fields and click . The UDP Relay Table window is displayed.
Click . When the Status field displays “Finished!”, the fields are confirmed as modified.
To delete a UDP Relay Table entry:
Select the entry to delete.
Click .
Click . When the Status field displays “Finished!”, the entry is confirmed as deleted.