Cabletron Systems SSR-ATM29-02, Руководство пользователя, Страница: 199 / 386

CoreWatch User’s Guide 199
Chapter 13: Configuring Security on the SSR
10. Do one of the following:
– If you have defined all of the rules for the ACL, click Finish.
– If you want to define additional rules, select the Add More Rules check box and click
Next
.
11. If you selected the Add More Rules check box, define another rule in the IP ACL Rule
panel that appears. To do so repeat step 9 and step 10 until you define all the desired
rules for the ACL.
Source Port For TCP or UDP, enter the number of the source TCP or UDP
port. This field applies only to TCP or UDP traffic. If the
incoming packet is ICMP or another non-TCP or non-UDP
packet and you specified a source or destination port, the SSR
does not check the port value. The SSR checks only the source
and destination IP addresses in the packet.
If a service uses the same port for both TCP and UDP, you do
not need to define two separate rules. Instead, you can define
one IP rule and specify the port that the service uses.
You can specify a range of port numbers using operator
symbols; for example, 10-20 (between 10 and 20 inclusive),
>1024 (greater than 1024), !=1024 (not equal to 1024).
The port numbers of some popular services are already
defined as options. For example, for DNS, you can enter the
port number 53 as well as select the DNS (53) option from the
second Source Port field.
Destination Address Enter the destination address of the flow.
Destination Mask Enter the destination filtering mask of the flow.
The same requirements and restrictions for Source Mask apply
to Destination Mask.
Destination Port For TCP or UDP, enter the number of the destination TCP or
UDP port. This field applies only to incoming TCP or UDP
traffic.
The same requirements and restrictions for Source Port apply
to Destination Port.
TOS Enter a TOS from 0 to 15.
Table 25. IP/TCP/UDP ACL Rule Criteria Fields (Continued)
Field Description