RE: Socks server port

[Marc Rauzier <mrauzier@xxxxxxx>]

Le jeu. 19 mai 2005 12:02:36,  écrivait:

> I suppose that changing the SOCKS server port back to 1080 is out
> of the question. 
> 

You are right. I don't even know who manages this socks server :-)


> In that case, port tunneling may be the answer.
> 
> SOCAT is a port tunneling utility on *nix. The nice thing about
> SOCAT is that its AIX binary runs on the iSeries in the PASE
> environment, with no recompilation.
> 

Interesting.

> Try this, either in PASE, or Linux, or any appropriate unix:
> 
> socat TCP4-LISTEN:2121
> SOCKS4:<socks-server>:<ftp-host>:21,socksport=8090 
> 
> Then, in your iSeries FTP client run 
> 
> FTP RMTSYS('socat-server') PORT(2121)            
> 
> If you run SOCAT in PASE, then the FTP request would look like
> 
> FTP RMTSYS('127.0.0.1') PORT(2121)
> 
> SOCAT for AIX that runs on iSeries can be found at 
> http://aixpdslib.seas.ucla.edu/packages/socat.html
> 
> To run socat, place the binary file in an iSeries IFS folder, and
> execute 
> 
> CALL PGM(QP2SHELL2)
>      PARM('socat' 
>           'TCP4-LISTEN:2121' 
>           'SOCKS4:<socks-server>:<ftp-host>:21,socksport=8090')
> 
> SOCAT is verified to run in 5.1 and 5.2. 
> I am not sure about 4.5, and did not try the SOCKS redirection
> yet. 
> 

OK, thank you I will try this if I can get PASE for the V4R5.

> Regards, 
> Shalom Carmel
> -----------------------
> www.venera.com - Exposing iSeries insecurity
> 
> 
> ----- Original Message -----
>> date: Wed, 18 May 2005 17:28:55 +0100
>> from: Marc Rauzier 
>> subject: RE: Socks server port
>> 
>> Le mer. 18 mai 2005 14:44:02, Elvis Budimlic écrivait:
>> 
>> > NESTAT *CNN
>> > F14
>> > 
>> > will give you the port numbers.  
>> > 
>> > However, I am a bit confused about your setup.  Your socks
>> > server is running on the iSeries?  Then its port number should
>> > show in the WRKSRVTBLE and could be changed. No?
>> > 
>> 
>> Alas, no and this is the point. The socks server is *not* running
>> on the iSeries. It is running somewhere on the intranet network
>> to allow the FTP traffic from the iSeries to go out on the
>> internet network. 
>> 
>> The FTP server on the internet server is listening on the
>> classical port (21). But the iSeries when running the FTP client
>> session, can only reach this FTP server by using the socks server
>> that is listening on the 8090 port.
>> 
>> I have aleardy used this kind of setup (for a telnet session, but
>> it is the same), and I know that when accessing to a server thru
>> a socks server, the OS400 uses the standard socks server port
>> which is 1080. So, my question is : is it possible to replace
>> 1080 by 8090 and if yes, where can I do it ?
>> 
>> WRKSRVTBLE is used for servers that runs on the iSeries and even
>> if it was not the case, I do not find any entry for any socks
>> service. 
>> 
>> 
>> > Elvis
>> > 
>> > -----Original Message-----
>> > From: midrange-l-bounces@xxxxxxxxxxxx
>> > [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Marc
>> > Rauzier Sent: Wednesday, May 18, 2005 1:38 AM
>> > To: Midrange Systems Technical Discussion
>> > Subject: RE: Socks server port
>> > 
>> > Le mar. 17 mai 2005 18:05:01, Wilt, Charles écrivait:
>> > 
>> >> WRKSRVTBLE ??
>> >> 
>> > 
>> > Thank you Charles.
>> > 
>> > Well, I was sure not to write down this question in a fine
>> > english 
>> > :-) 
>> > 
>> > In my case, the AS400 is not the server, it is the client. It
>> > runs an FTP session to a FTP server thru a socks server (the
>> > socks server can only be configured with iSeries Navigator by
>> > right-clicking Properties on the TCP/IP configuration in the
>> > Network panel and filling the right informations in the SOCKS
>> > tab). The WRKSRVTBLE would help me if the AS400 have been FTP
>> > server which is not the case. 
>> > 
>> > 
>> >> Charles Wilt
>> >> iSeries Systems Administrator / Developer
>> >> Mitsubishi Electric Automotive America
>> >> ph: 513-573-4343
>> >> fax: 513-398-1121
>> >>  
>> >> 
>> >>> -----Original Message-----
>> >>> From: midrange-l-bounces@xxxxxxxxxxxx
>> >>> [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Marc
>> >>> Rauzier Sent: Tuesday, May 17, 2005 11:31 AM
>> >>> To: midrange-l@xxxxxxxxxxxx
>> >>> Subject: Socks server port
>> >>> 
>> >>> 
>> >>> Hello everybody
>> >>> 
>> >>> When configuring the socks client on an AS400 for a socks 
>> >>> server (I want to 
>> >>> run FTP thru a socks server from the AS400), I do not see a 
>> >>> way to change 
>> >>> the port on which the socks server listens.
>> >>> 
>> >>> Does someone know if it is possible (changing from 1080 which
>> >>> is, I guess, 
>> >>> the default and used value to, let's say 8090) and, if yes,
>> >>> how ? 
>> >>> 
>> >>> Note : OS400 V4R5
>> >>> 
>> > 
>> > 
>> 
>> 
>> 
>> -- 
>> Cordialement/Best regards
>> Marc Rauzier
>> 
>> Opinions I stated here are my own.
>> 
> 
> 



-- 
Cordialement/Best regards
Marc Rauzier

Opinions I stated here are my own.