Huawei DR814Q - Manual (Page 65)

User Manual
Aolynk DR814Q ADSL2+ Broadband Router
5 Advanced Configuration
60
Item Description
IP Protocol
Number or
name
Type in a protocol name or number and apply this
filtering policy to the packets of this type. The protocol
name can be TCP, UDP or ICMP. For other protocols,
you need to type in their protocol numbers. For example,
type in 2 for IGMP, and 46 for RSVP.
Inbound
The direction of inbound data. Select Allow to permit
external hosts to access internal hosts. Select Block to
forbid external hosts to access internal hosts.
Direction
Outbound
The direction of outbound data. Select Allow to permit
internal hosts to access external hosts. Select Block to
forbid internal hosts to access external hosts.
Click <Apply> after the configuration is complete. This policy will be added to the list of
port filtering policies.
Example: By default, the external hosts are not allowed to ping the WAN port even if the
security level is set to low. To allow the internal hosts and external hosts to ping each
other, you can perform the configuration as below.
Figure 5-22 Example of the filtering policy for a protocol (2)
II. Host validators
By specifying the IP address and configuring the corresponding policy, you can restrict
the access right of a host or hosts on a network segment.
To configure host validators to a group of interfaces, click the corresponding <Host
Validators…> button in the [Current Security Policies] section (see Figure 5-17) to enter
the page as below.