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NAT on Cisco Cat 6500

Geze2498
Level 1
Level 1

I had private server that i want to be accessed from outside. so i did all the Static NAT and ACL configs with default port 80.

the issue is, once i typed the public ip from my browser which is behind the NAT, it displays the servers contents only for second and then displays only the private ip and error (http://192.168.1.144/ConnectHospial/faces/login.xhtml) to be exact.

suppose my public ip is 1.2.3.4 and private ip is 192.168.1.144 so what i did was http://1.2.3.4 then the above issue comes.


 

 

11 Replies 11

Jaderson Pessoa
VIP Alumni
VIP Alumni

Hello,

Are you trying it access your webserver using ip public from your internal lan? I think that wont be works well. What happens if your try it from external of your internal lan?

 

Do you clear cache of your web browser?

Could you share your configuration?

Jaderson Pessoa
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ip nat inside source static 192.168.1.144 1.2.3.4

is the nat config,for the test purpose i did "permit ip any any" on both ACLs applied on ip nat outside and ip nat inside interfaces,which means not having an ACL at all. then what i did was 
http://1.2.3.4 from internet,not inside LAN. 

@Geze2498 hello,

 

Could you edit your acl to this below and post the result here?

 

ip nat inside source static 192.168.1.144 80 1.2.3.4 80

 

Thanks in advance.

Jaderson Pessoa
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I actually tried that at first,but i shows this error and rejects my config

"%Port 80 is being used by system min80"

when i try to see my NAT config there was only one PAT/NAT-PT config with other public ip. 

Ok,

do it so:ip nat inside source static 192.168.1.144 80 1.2.3.4 8080

and try access your website through it: http://1.2.3.4:8080

Because the post 80 is in use at this moment in your catalyst.
Jaderson Pessoa
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unfortunately that didn't work either,i tried that too. "%Port 8080 is being used by system min8080"

is there any means that help me kill "system min8080"?

Just to test if it will works: ip nat inside source static 192.168.1.144 80 1.2.3.4 6143

and try access your website through it: http://1.2.3.4:6143

 

to clear running process

 

show processes >>> This will list all of the running processes and will help you locate the PID of the process that you want to kill

clear socket PID 

 

 

Jaderson Pessoa
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I did that,but still the same problem.
i even cleared all NAT Translations and killed all the processes but the same error code exists,i can't do PAT.

Please,

share your current configuration here.
Jaderson Pessoa
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The image file is how it looks like when i browse with private IP from inside the LAN.

from the config i have removed sensitive information.

well,

just for test: Cat65k-CoreVSS(config-ext-nacl)#1 permit ip any 1.2.3.4 << change from any to wan address.

and from internet explorer test your system or clear all cache in your web browser if you are using internal PC.
Jaderson Pessoa
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