Re: ftp-client does not work after installing Nmap 4.20

["DePriest, Jason R." <jrdepriest () gmail com>]

On 8/21/07, Dirk Herroelen  wrote:
> Hello,
>
> Since installing nmap 4.20, the windows ftp-client does not work like
> before: I get "425 can't build data connection: connection refused" when
> connecting to my local linux-box... I found some explanations on the web,
> but maybe there's a entry in the registry that was modified by installing
> Nmap/WinPcap ? Also after uninstalling, it still does not work.
>
> Thank you for your time.
>
> Best regards,
> Dirk Herroelen
> Brussels - Belgium

I cannot speak for version 4.20 as I have one of the SOC builds installed.

But, there are some registry tweaks that nmap makes.  I have a file
called nmap_performance.reg in my nmap directory with these entries:
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"MaxUserPort"=dword:0000fffe
"TcpTimedWaitDelay"=dword:0000001e
"StrictTimeWaitSeqCheck"=dword:00000001

You can check your Windows registry and see if those are set to these
values.  I have no idea what the default values are.  Also, I have
never had a problem like that with my Windows built-in FTP client.  Of
course, I don't use it very often because my Internet access is
through a proxy server and the built-in client doesn't support that.

I'm sure someone who is more knowledgeable about the install /
uninstall procedure can give you better guidance, but it had been 9
hours since you asked and I didn't want you to get frustrated.

-Jason

-- 
NOTICE:  This email is being sent in clear-text across the public
Internet.  Therefore, any attempts to include unenforceable legalese
restrictions are ridiculous and pointless.  If you can read this,
consider yourself authorized (whether I like it or not).

_______________________________________________
Sent through the nmap-dev mailing list
http://cgi.insecure.org/mailman/listinfo/nmap-dev
Archived at http://SecLists.Org