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WEIRD FTP PROBLEM!

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WEIRD FTP PROBLEM! - 20.Mar.2002 10:11:00 PM   
marshalj

 

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Wow I've not seen this before?

Proxy software client users can not get FTP dir
list if the firewall client Auto detect ISA server on the client software is checked

Non client users are fine.

Please email me if you have seen this before "[Eek!]"
Post #: 1
RE: WEIRD FTP PROBLEM! - 21.Mar.2002 3:01:00 PM   
lemonwater925

 

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From: North of the 49th
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quote:
Originally posted by marshalj:
Wow I've not seen this before?

Proxy software client users can not get FTP dir
list if the firewall client Auto detect ISA server on the client software is checked

Non client users are fine.

Please email me if you have seen this before [Eek!]

On a GUI client set it for passive.

For the dos FTP client when you start it add the -a so it will look like c:\ftp -a

Should fix you up

(in reply to marshalj)
Post #: 2
RE: WEIRD FTP PROBLEM! - 21.Mar.2002 3:06:00 PM   
marshalj

 

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No it dosen't work through DOS, FTP Client or
even from a browser???

(in reply to marshalj)
Post #: 3
RE: WEIRD FTP PROBLEM! - 1.Apr.2002 3:52:00 PM   
lemonwater925

 

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From: North of the 49th
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Did you try unchecking the autodetect ? We don't have that checked.

(in reply to marshalj)
Post #: 4
RE: WEIRD FTP PROBLEM! - 4.Apr.2002 2:49:00 AM   
lemonwater925

 

Posts: 417
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From: North of the 49th
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Looks like I did have the facts straight regarding the -a for the command line FTP

Actually looked at the help (shocking). The -a switch is :

-a Use any local interface when binding data connection.

Calling back MS to find out how to fix this up.

(in reply to marshalj)
Post #: 5
RE: WEIRD FTP PROBLEM! - 4.Apr.2002 6:07:00 AM   
tshinder

 

Posts: 50013
Joined: 10.Jan.2001
From: Texas
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Hi Lemon,

I didn't take the Help file's meaning of the -a switch to indicate PASV mode. In fact, its typically obtuse, so I'm not exactly sure what its supposed to me. I can guess, but I'm not postive.

Tom

(in reply to marshalj)
Post #: 6
RE: WEIRD FTP PROBLEM! - 4.Apr.2002 3:17:00 PM   
lemonwater925

 

Posts: 417
Joined: 22.Mar.2001
From: North of the 49th
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If I don't use the -a option I get the error

ftp: bind :Can't assign requested address

The Qarticle Q164395

SYMPTOMS
When you use Ftp.exe from either a Microsoft Windows NT Server or a Microsoft Windows 95 client while it is configured to use the Winsock Proxy, you may get the following error message:

Bind: Can't assign requested address.

CAUSE
This can be caused by one of the following reasons:

The IP address of the external interface of the Proxy Server is in the Local Address Table (LAT).

-OR-

The Proxy Server has one network interface and only one IP address.

WORKAROUND
Remove any references to external IP addresses from the LAT on the Proxy Server.

MORE INFORMATION
If the IP address of an external interface on the Proxy Server is in the LAT, it is considered by the proxy client to be internal. Because the client computer does not have an interface with the same IP address as the external IP address of the Proxy Server, you get the above error message.

Since both NICs are internal not sure what I can do about it...

(in reply to marshalj)
Post #: 7
RE: WEIRD FTP PROBLEM! - 4.Apr.2002 4:39:00 PM   
tshinder

 

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From: Texas
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Hi Lemon,

Are you trying to run the FTP app from the ISA Server itself?

Thanks!

Tom

(in reply to marshalj)
Post #: 8
RE: WEIRD FTP PROBLEM! - 11.Apr.2002 6:33:00 PM   
lemonwater925

 

Posts: 417
Joined: 22.Mar.2001
From: North of the 49th
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from a workstation..

response from MS was ...

<snip>
Here are the details as to why the error occurs.



2.08) bind: can't assign requested address
When using FTP.EXE from Windows NT or Windows 95 clients, you may encounter this error. Normally, FTP should work properly with the WinSock Proxy service.

FTP connects in the following manner:
1. It creates a socket, and connects to the requested server.
2. It then calls getsockname() to get the interface that was used for the connection.
3. It then calls bind() with the IP address that was retrieved by the getsockname() call.
4. This bind() is the call that fails. The error message displayed corresponds to the WSAEADDRNOTAVAIL error code.

This can happen if the external interface of the proxy is in the LAT, thus it is considered by the proxy client to be internal. Since the local machine does not have an interface with the same IP as the external IP of the proxy, this call fails. Bottom line, make sure that the IP address of the external interface of the proxy is NOT in the LAT.


Or use ftp Ża
</snip>

Since both NICs are internal don't see how I can do this....

(in reply to marshalj)
Post #: 9
RE: WEIRD FTP PROBLEM! - 12.Jun.2002 5:36:00 AM   
erica_zhu

 

Posts: 35
Joined: 10.Jun.2002
From: china
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may i know what ftp -a under DOS means??
when i just type ftp ftp.xxxxx.com, when i type "dir" command to view directories, i get error message said "ftp bind:
when i type ftp -a ftp.xxxxx.com, i can get the director view.
But what i need to change in IE, if i want to browser in IE for FTP site??

(in reply to marshalj)
Post #: 10
RE: WEIRD FTP PROBLEM! - 6.Dec.2004 4:41:00 PM   
psphandal

 

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From: UK
Status: offline
I have exactly the same problem with the FTP client and LAT table.

If I exclude the external interface from the LAT table then I am unable to ping either the internal or external NICS.

Both NICs are using 192.168.101.x addresses

(in reply to marshalj)
Post #: 11
RE: WEIRD FTP PROBLEM! - 6.Dec.2004 8:15:00 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Hi Pally,

the internal and external interface of ISA server *must* always be on different Network ID's. Also, never, I repeat *never* include en external IP address in the LAT!

HTH,
Stefaan

(in reply to marshalj)
Post #: 12
RE: WEIRD FTP PROBLEM! - 8.Dec.2004 5:29:00 PM   
psphandal

 

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Joined: 6.Dec.2004
From: UK
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Hi Stefaan,

I don't know why I can't ping my server if I set the LAT correctly ( exclude the external address)

I did run the Security Configuration Wizard on it if that makes a difference to the LAT at all ?

We use private range addresses on the corporate netwrok as we have outsourced Cisco firewalls that NAT the external address which is why both the ISA internal and external address are 172.22.x.x addresses.

Any ideas would be appreciated

(in reply to marshalj)
Post #: 13

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