I can connect from local, but from outside i can

[tondop]

I have a problem. I can connect to remote computer with external IP from the outside but not from LAN. I can ping this external IP from all computers that are not from LAN.
Can you advise what to do with it? Thanks in advance for advice?

[blackened]

All the terminology is great, but unless you use it properly and in a very specific and detailed way, then it's just downright confusing.

What exactly are you trying to do? What exactly is your network setup? In what situations (if any) do you have the connectivity you want? Do you have all appropriate ports forwarded on your router (if applicable)?

[tondop]

This will help to clarify?

computer#A
external IP: 195.168.63.162
mask: 255.255.255.248
default gw: 195.168.63.161
DNS: 195.168.1.2 and 195.168.1.4


computer#B
IP: 192.168.252.57
mask: 255.255.255.0
default gw: 192.168.252.1
DNS: 195.168.1.2 and 195.168.1.2

My problem is, that I cant connet/ping computer#B from computer#A

[dmizer]

Does computer A have a direct connection to the internet, or is there a router between computer A and the internet?

[tondop]

Does computer A have a direct connection to the internet, or is there a router between computer A and the internet?

The sequence from computerA is as follows:
computerA -> router -> Internet


The sequence from computerB is as follows:
computerB -> switch -> router -> Internet


To help it?

[MaxIBoy]

Do you have any ports open?

(I can't ping you either. Sorry, but I couldn't resist.)

[sahabcse]

Hi

Check the following

nmap 195.168.63.162
nmap 192.168.252.57

[tondop]

Do you have any ports open?

(I can't ping you either. Sorry, but I couldn't resist.)

sorry but I do not know this. How to find? The problem is that my router managed provider.

[sahabcse]

Hi

Install the nmap tool and check whether any ports are in closed state..........

Installing nmap

#apt-get install namp

[tondop]

#nmap 192.168.252.57 -PN

Not shown: 1711 filtered ports
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
3389/tcp open ms-term-serv


and

#nmap 195.168.63.162
Not shown: 1714 closed ports
PORT STATE SERVICE
22/tcp open ssh

So what now??