H3C Technologies H3C SecBlade FW Cards - Manual (Page 32)

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Figure 18 Network diagram for NAT DNS mapping
2. Configuration procedure
# As shown in Figure 18 , configure the IP addresses for the interfaces (omitted).
# Enter the view of interface GigabitEthernet 0/2.
system-view
[Secpath] interface gigabitethernet 0/2
# Configure the internal web server.
[Secpath-GigabitEthernet0/2] nat server protocol tcp global 202.38.1.2 inside 10.110.10.1
www
# Configure the internal FTP server.
[Secpath-GigabitEthernet0/2] nat server protocol tcp global 202.38.1.2 inside 10.110.10.2
ftp
[Secpath-GigabitEthernet0/2] quit
# Configure two DNS mapping entries: map the domain name www.server.com of the web server to
202.38.1.2, and ftp.server.com of the FTP server to 202.38.1.2.
[Secpath] nat dns-map domain www.server.com protocol tcp ip 202.38.1.2 port www
[Secpath] nat dns-map domain ftp.server.com protocol tcp ip 202.38.1.2 port ftp
[Secpath] quit
3. Verification
# After completing the configurations, display the DNS mapping configuration information.
display nat dns-map
NAT DNS mapping information:
There are currently 2 NAT DNS mapping(s)
Domain-name: www.server.com
Global-IP : 202.38.1.2
Global-port: 80(www)
Protocol : 6(TCP)
Domain-name: ftp.server.com
Global-IP : 202.38.1.2
Global-port: 21(ftp)
Protocol : 6(TCP)
Host A and Host B can use the domain name www.server.com to access the web server, and use
ftp.server.com to access the FTP server.
FTP server
10.110.10.2/16
Host A
10.110.10.3/16
Internet
GE0/1
10.110.10.10/16
GE0/2
202.38.1.1/24
Web server
10.110.10.1/16
DNS server
202.38.1.4/24
Host B
202.38.1.10/24
SecPath