FTP : IP Address not found

The behaviour described in the bug report is either by design, or would be far too complex/time-consuming to be changed

Moderators: white, Hacker, petermad, Stefan2

mosulii
Junior Member
Junior Member
Posts: 2
Joined: 2010-10-16, 05:42 UTC

FTP : IP Address not found

Post by *mosulii »

windows 7 64bit
when i open FTP server it tel me : IP Address not found
in last ver. ip it work and the IP work with other programs
please help
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

TC just makes normal name server lookups - which seems to fail for you. Maybe a firewall is blocking TC.
Author of Total Commander
https://www.ghisler.com
mosulii
Junior Member
Junior Member
Posts: 2
Joined: 2010-10-16, 05:42 UTC

firewall

Post by *mosulii »

no problem with firewall cause other option in TC work on internet
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

Can you send me the exact name of the server as configured in the connection? Maybe there is a special spelling which isn't supported any more (e.g. with ftp:// prefix or so).
Author of Total Commander
https://www.ghisler.com
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

I have the same problem now, with version 9.12 (also with 8.51, 7.55), but only on Windows Server (2016). With full open firewall, the problem still exists.

I think, the TC process can't communicate with win server os as well as simple w7 or w10. But why?
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

You get error "IP address not found"?

If yes, does the server have a DNS entry, or is it just some internal name (e.g. SMB)? FTP in TC can only resolve DNS names.
Author of Total Commander
https://www.ghisler.com
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

ghisler(Author) wrote:does the server have a DNS entry, or is it just some internal name (e.g. SMB)? FTP in TC can only resolve DNS names.
Yes, they have. Some of them are public servers, others are internal hosts, but the lan also have correct DNS server.
The names are resolvable on That windows in command line (nslookup or ping), they are working in any version of TC on Win7 or Win10, only any version of TC on Win Server has this problem.
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

I made some quick tests:

- Win Srv 2003, 32bit, TC 6.51, 7.55, 8.51, 9.12 - No Problem
- Win Srv 2008 R2, 64bit, TC64 8.52 - No Problem
- Win Srv 2012 R2, 64bit, TC64 8.51, 9.12 - No Problem

- Win Srv 2016, 64bit, TC64/32 7.55, 8.51, 9.12 - None of them works, also as local admin with full opened firewall :(
gdpr deleted 6
Power Member
Power Member
Posts: 872
Joined: 2013-09-04, 14:07 UTC

Post by *gdpr deleted 6 »

2junior013,
have you tried any other FTP client on the WS2016 box?
(Or, how did you figure the problem is specific to TC and not generally a problem with FTP communication on this WS2016 box? It could perhaps be possible that the error message in TC about the IP address not being found is misleading/inaccurate...)
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

elgonzo wrote:how did you figure the problem is specific to TC and not generally a problem with FTP communication
Because the FTP communication itself works in TC too - If I configure it with IP, not with hostname. The problem only with the DNS resolution, not the FTP communication.

1., the DNS resolution works well in all other software on that box.
2., TC has another annoying problem on W2016, relating to TC <-> OS communication: M$ Office related files can't be opened because of "Access denied" error - not to the file itself, but the word/excel process used to open it.

So, I think it would be some communication problem between TC process and the OS itself. Maybe some kind of process isolation on W2016?
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

Do you see anything in the log? You can enable the log file via
Configuration - Options - FTP.
Author of Total Commander
https://www.ghisler.com
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

ghisler(Author) wrote:Do you see anything in the log?
Nothing relevant :/ The log shows only the same as the connecton window, before the "IP address not found" pop-up:

Code: Select all

----------
Connect to: (2018.02.22 9:39:52)
hostname=ftp.***.hu
username=***
startdir=
EOF :(
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

Well, it means that TC couldn't even resolve the IP address.

What do you get when you rin cmd.exe and use command:
nslookup ftp.yourservername.hu?
Author of Total Commander
https://www.ghisler.com
junior013
Junior Member
Junior Member
Posts: 12
Joined: 2018-01-24, 09:01 UTC

Post by *junior013 »

ghisler(Author) wrote:What do you get when you rin cmd.exe and use command: nslookup ftp.yourservername.hu?
junior013 wrote:1., the DNS resolution works well in all other software on that box.
...like nslookup, ping, ie, firefox, thunderbird, etc. works well with host names, with same servers too, only TC has this problem.

Can You test it on a Win2016 box?
User avatar
ghisler(Author)
Site Admin
Site Admin
Posts: 48021
Joined: 2003-02-04, 09:46 UTC
Location: Switzerland
Contact:

Post by *ghisler(Author) »

It could be a problem with the Windows firewall.
Author of Total Commander
https://www.ghisler.com
Post Reply