External IP problem?

  • Thread starter Thread starter muskie
  • Start date Start date
M

muskie

Scenario:

WinXP at home can't FTP to Computer A but no problem to Computer B.
They are on the same segment in the office.

Office Setting:

WAN - Using ADSL router to share the internet and added the port
forwarding for the needed services under it.
LAN - 192.168.123.x

Computer A - setup with serv-u FTP server with port 21 (2 Lan card but
one disabled)
Computer B - setup with serv-u FTP server with port 2021

Computer B ftp client can access Computer A ftp server and vice versa
without any problem. (ont the same LAN) They can both browse the
internet without any problem.

Home Setting:
WinXP

Found:
By using the packet analyser, can see the packet from home reached
Computer A but it's not responding. In fact, it happened not just FTP
service. But also the WEB (port 80) and VNC (port 5900). Tried to use
another adsl router and still the same result.

Any clue from anyone? Thanks in advance!!!
 
muskie said:
Scenario:

WinXP at home can't FTP to Computer A but no problem to Computer B.
They are on the same segment in the office.

Office Setting:

WAN - Using ADSL router to share the internet and added the port
forwarding for the needed services under it.
LAN - 192.168.123.x

Computer A - setup with serv-u FTP server with port 21 (2 Lan card but
one disabled)
Computer B - setup with serv-u FTP server with port 2021

Computer B ftp client can access Computer A ftp server and vice versa
without any problem. (ont the same LAN) They can both browse the
internet without any problem.

Home Setting:
WinXP

Found:
By using the packet analyser, can see the packet from home reached
Computer A but it's not responding. In fact, it happened not just FTP
service. But also the WEB (port 80) and VNC (port 5900). Tried to use
another adsl router and still the same result.

Any clue from anyone? Thanks in advance!!!
Click to expand...

I would run a test with the FTP port on Computer A set to 2022.
 
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