156
RSH : Enabled
RTSP : Enabled
SCCP : Enabled
SIP : Enabled
SQLNET : Enabled
TFTP : Enabled
XDMCP : Enabled
# Display NAT session information generated when Host accesses the Web server.
[Router] display nat session verbose
Initiator:
Source IP/port: 192.168.1.2/1694
Destination IP/port: 202.38.1.2/8080
DS-Lite tunnel peer: -
VPN instance/VLAN ID/VLL ID: -/-/-
Protocol: TCP(6)
Inbound interface: GigabitEthernet2/0/2
Responder:
Source IP/port: 192.168.1.2/8080
Destination IP/port: 202.38.1.3/1025
DS-Lite tunnel peer: -
VPN instance/VLAN ID/VLL ID: -/-/-
Protocol: TCP(6)
Inbound interface: GigabitEthernet2/0/1
State: TCP_ESTABLISHED
Application: HTTP
Start time: 2012-08-15 14:53:29 TTL: 3597s
Initiator->Responder: 7 packets 308 bytes
Responder->Initiator: 5 packets 312 bytes
Total sessions found: 1
NAT hairpin in C/S mode configuration example
Network requirements
As shown in Figure 69, the internal FTP server at 192.168.1.4/24 provides services for internal and
external users. The private network uses two public IP addresses 202.38.1.1 and 202.38.1.2.
Configure NAT hairpin in C/S mode to allow external and internal users to access the internal FTP
server by using public IP address 202.38.1.2.
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