[jcifs] JCIFS 1.3.8 java.net.SocketException: Connection timed out:could be due to invalid address

Steve_Rut sjrutkow at scj.com
Fri May 7 12:29:54 MDT 2010

Mike - I've been following this thread since we too are experiencing this
exact same issue. We are running JCIFS 1.3.8 on AIX 6.1 and accessing a Win
2003 share. Our LDAP user takes upwards of 10 minutes to display data while
a local user on the Win 2003 share displys nearly immediate. 

Throughout this thread you imply something may be wrong on the AIX side:
>"You're just getting an uncommon response because the server is AIX." 
>"Because the server is AIX, you're seeing an unusual error condition."
>"A wild guess is that the AIX side is just misconfigured." 
>"the AIX server thinks your a DOS attach" 

Are you suggesting something is amiss at the AIX OS Level or a faulty
configuration at the jCIFS client configuration?

Coould you suggest some areas where I could look at the AIX level to see
what may be misconfigured on the AIX Side?

Steve Rutkowski

Michael B Allen wrote:
> On Wed, Apr 7, 2010 at 2:45 AM, Ivan Petrov <lordjohnp at gmail.com> wrote:
>> Hi Mike,
>> Sorry that I've sent a mail directly to you, it wasn't intentionaly.
>> I've attached a full tcp dumps this time.
>> Thanks for the help in advance.
> Hi Ivan,
> Your packet capture shows that something is very wrong with network
> connectivity between the JCIFS client and the server. Multiple SYN
> packets are sent, sometimes for 20-30 seconds, before an ACK is
> received. Once the TCP connection is established the exchange is fast.
> This issue has nothing to do with JCIFS. You could simulate the
> problem with telnet to port 445.
> Now my guess is that there's some funky firewalling in the way, the
> AIX server thinks your a DOS attach or there's an overloaded router
> somewhere. Are you running a ton of traffic through an old 10 baseT
> hub under your desk?
> Something is dropping SYN packets. Ask your network administrator.
> Mike
> -- 
> Michael B Allen
> Java Active Directory Integration
> http://www.ioplex.com/

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