3D Connexion 17621 setup guide Show NAT MAP, Show NAT Sessions

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address 10.5.3.20 and sent to the Internal NAT Network by the router.

Line 1 shows a different option for the one−to−one address translation pairs. It lists IP address:port combinations such that a site on the Internet could access a Web server on the workstation at the NAT Network address of 10.5.3.11.

SHOW NAT MAP

This display was described at the end of the previous section, but several other details will be presented here.

Nat_2220> show nat map [ NAT Map Database ]

Total Number of Entries in NAT Map Database: 2

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

InternalExternal

LineNo. <IPaddress[/Mask or :Port]> −> <IPaddress[/Mask or :Port]>

1

−>

2

−>

As noted previously, individual sockets (IP Address and Port combinations) can be entered and displayed as one−to−one pairs.

For example:

1 −>

is entered to allow a workstation at the Internal NAT Network address of 10.5.3.11 to be seen as a Web server on the Internet (the External Network) at the IP address of 198.41.9.194.

The one−to−one pairs can also map ranges of IP addresses such as:

X −>

One important relationship between the NAT Map Database and the entered Internal and External Range(s) of NAT must be introduced here:

The Internal half of the one−to−one pair must be within the NAT Internal Range of the configuration, and the External half of the one−to−one pair must be within the NAT External Range of the configuration.

The NAT software will not use a one−to−one pair in the NAT Map Database which fails to meet the above criteria.

SHOW NAT SESSIONS

This command will display all active NAT Sessions that the NAT software is presently using to modify IP packets as they travel between the NAT Network and the External Network/Internet.

Nat_2220> show nat sessions

 

 

 

 

Active Map

Remote

Proto

Hashes

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

−−−−−−−−−−−−−−−−−−−−

−−−−−− −−−−−−−−−

 

Time Since: Created

Last Activity

 

 

−−−−−−−−−−−−−−−−−

−−−−−−−−−−−−−−−−

10.5.3.20:0

−>198.41.9.194:0

198.41.9.200:0

ICMP

221/907

 

 

124.33

114.33

 

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Contents Contents − Network Address Translation Configuration Guide Final Notes Important Disclaimers NAT Functionality Local Network SecurityExample ONE AN Example NAT Session Condition Page Condition 1 a NAT Session Initiated from the Outside Example TWO Pinging the NAT Router ConditionPage Example Three Pinging the Macintosh AT 198.41.9.210 ConditionPage Console Commands for the NAT Software Show NAT Show NAT ConfigConcluding Explanation Remarks Line−by−line description of this display follows TCP SYN timeout period sec Show NAT Sessions Show NAT MAPShow NAT Statistics Show NAT Addressdb NAT Global Page RespondICMP NAT interface responses to Icmp packets NAT Mapping IP Section ID Port Configuration for NAT for Example ONE External NAT PORT, Example Internal NAT PORT, Example IP Section ID Port Configuration for NAT for Example ThreeHere is the configuration of the IP ports Entered External range NAT Passthru RANGE, Example Final NotesCurrently Supported IP Applications Updated Aug 19 Document ID

17621 specifications

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