H3C Technologies H3C Intelligent Management Center - Manual (Page 865)

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{
Specified Port: Allows you to identify a specific TCP or UDP port number or range of numbers.
b. Click the radio button to the left of Specified Port and select the operator you want to use
from the list located to the right of the Specified Port option.
c. Enter the TCP or UDP port number in the Port field.
17. If you selected TCP or UDP as the protocol you want to apply this ACL rule to, you must also specify
the destination TCP or UDP port numbers, select the destination TCP or UDP port by clicking the
radio button to the left of the port option you want to apply in the Destination Port section of the
Configure Rule – Modify Rule page:
{
Undefined: Allows you to permit or deny traffic for all TCP or UDP port numbers.
{
Specified Port: Allows you to identify a specific TCP or UDP port number or range of numbers.
Click the radio button to the left of Specified Port and select the operator you want to use from
the list located to the right of the Specified Port option. Enter the TCP or UDP port number in the
Port field.
18. If you selected TCP or UDP as the protocol you want to apply this ACL rule to in Step 11, you could
be promoted to select these options:
{
Click the radio button to the left of Yes in the HP ACK option if you want to apply the rule to
match the TCP ACK, otherwise click on the radio button to the left of No.
{
Click the radio button to the left of Yes in the HP FIN option if you want to apply the rule to
match the TCP FIN, otherwise click on the radio button to the left of No.
{
Click the radio button to the left of Yes in the HP RST option if you want to apply the rule to
match the TCP RST, otherwise click on the radio button to the left of No.
{
Click the radio button to the left of Yes in the HP SYN option if you want to apply the rule to
match the TCP SYN, otherwise click on the radio button to the left of No.
The HP ACK, HP FIN, HP RST, and HP SYN settings are valid only for the HP E series devices.
19. Select the IP priority you want to apply to ACL from the IP Priority list.
20. Select the Type of Service for this ACL from the TOS Value list.
21. Select the DSCP value you want to apply to this ACL from the DSCP Value list.
22. Do one of the following:
{
Click the radio button to the left of Yes in the Fragment option if you want to apply the rule
to each fragment, or
{
Click the radio button to the left of No in the Fragment option if you want to apply the rule to
first fragments.
Traditional packet filtering matched only first fragments of IPv4 packets and allowed all
subsequent non-first fragments to pass through. This resulted in security risks as hackers can
fabricate non-first fragments to attack networks.
23. Click the radio button to the left of Yes in the Logging option if you want to enable logging for
this rule.
This feature enables the logging of packet filtering only when a module (for example, a firewall)
using the ACL supports logging.
24. Enter the VPN instance you want to apply to this rule by entering the VPN-instance-name in the
VPN Instance field.
A valid entry must be 0-31 characters that cannot contain question marks or blank spaces. This
field is case sensitive. If no VPN instance is specified in this field, the rule applies only to non-VPN
packets.