Dns Configuration Task List; Configuring The Ipv4 Dns Client; Configuring Static Domain Name Resolution - HP 5920 Series Configuration Manual

The IP address configured with DNS spoofing is not the actual IP address of the requested domain
name, so the TTL of the DNS reply is set to 0 to prevent the DNS client from generating incorrect
domain name-to-IP address mappings.
Upon receiving the reply, the host sends an HTTP request to the replied IP address.
3.
When forwarding the HTTP request through the dial-up interface, the device establishes a dial-up
4.
connection with the network, and dynamically obtains the DNS server address through DHCP or
other autoconfiguration mechanisms.
When the DNS reply ages out, the host sends a DNS request to the device again.
5.
Then the device operates the same as a DNS proxy. For more information, see
6.
After obtaining the IP address of the HTTP server, the host can access the HTTP server.
7.

DNS configuration task list

Tasks at a glance
Perform one of the following tasks:
•

Configuring the IPv4 DNS client

•
Configuring the IPv6 DNS client
(Optional.)
(Optional.)
(Optional.)
(Optional.)
Configuring the IPv4 DNS client

Configuring static domain name resolution

Static domain name resolution allows applications such as Telnet to contact hosts by using host names
instead of IPv4 addresses.
Follow these guidelines when you configure static domain name resolution:
On the public network or a VPN, each host name maps to only one IPv4 address. The most recent
•
configuration for a host name takes effect.
• You can configure host name-to-IPv4 address mappings for the public network and up to 1024
VPNs, and configure a maximum of 1024 host name-to-IPv4 address mappings for the public
network or each VPN.
To configure static domain name resolution:
Step
1. Enter system view.
2. Configure a mapping between
a host name and an IPv4
address.
Configuring the DNS proxy
Configuring DNS spoofing
Specifying the source interface for DNS packets
Configuring the DNS trusted interface
Command
system-view
ip host host-name ip-address
[ vpn-instance vpn-instance-name ]
76
"DNS proxy."
Remarks
N/A
By default, no mapping
between a host name and an
IPv4 address is configured.