Solved

Need Immed help with port problem!

Posted on 2010-09-14
16
603 Views
Last Modified: 2012-05-10
Am giving Filemaker pro database training.  I'm in a computer lab and none of the computers can access the database.  I can remote desktop onto the server to confirm the database is working.

I suspect that this lab is on a subnet with port 5003 blocked.  But I do not know what tests to quickly isolate and debug this problem.

How do I make the netstat command check port 5003?

Thanks!
0
Comment
Question by:tmonteit
16 Comments
 
LVL 3

Assisted Solution

by:latchways
latchways earned 150 total points
Comment Utility
quickest way to check if a port is open is to use telnet eg.

telnet 192.168.1.5 3389

the above will check if port 3389 (RDP) is open on the destination 192.168.1.5

0
 
LVL 24

Expert Comment

by:rfc1180
Comment Utility
netstat command will only check to see if the ports socket activity (Listening, established, wait, etc)
The commend that you want to use if the port is open from end to end is telnet:

Assuming this port is TCP and not UDP

telnet x.x.x.x 5003

if the port is blocked, you will not be able to connect, if the port is not listening, you should get a connection refused. If the host is on another subnet, you could check the firewalls policies/ACLs.
On the network the host is on (Host that is listening on 5003), check connectivity from another host too:

telnet x.x.x. 5003

Also, from the host that is listening on 5003,


telnet localhost 5003
telnet x.x.x. 5003

Billy
0
 

Author Comment

by:tmonteit
Comment Utility
Here's latest, ran commands:
> telnet ServerIP 5003  
  Hangs..
> netstat -a
    Lots of stuff here are a few of the lines.

  TCP    457-105-LAB3:netbios-ssn  457-105-LAB3.schools.sdistrict.org:0  LISTENING
  TCP    457-105-LAB3:1156      tjnt01.schools.sdistrict.org:microsoft-ds  ESTABLISHED
  TCP    457-105-LAB3:1367      fmsserver.fmsuser.sdistrict.org:3389  ESTABLISHED
  TCP    457-105-LAB3:1577      www49.filemaker.com:https  CLOSE_WAIT
  TCP    457-105-LAB3:1589      ldsk04.fmsuser.sdistrict.org:http  TIME_WAIT
Does this tell us anything?  What should I try next to troubleshoot?
0
 

Author Comment

by:tmonteit
Comment Utility
here's the latest.

W:\>telnet localhost 5003
Connecting To localhost...Could not open connection to the host, on port 5003: C
onnect failed
 
I'm sitting in front of live audience.  How do I explain whats happening so it doesn't look like my database is down?

0
 
LVL 24

Expert Comment

by:rfc1180
Comment Utility
>> telnet ServerIP 5003  
where did you try this from
0
 

Author Comment

by:tmonteit
Comment Utility

>ipconfig
Windows IP Configuration

Ethernet adapter Local Area Connection:
        Connection-specific DNS Suffix  . : sdistrict.org
        IP Address. . . . . . . . . . . . : 10.193.66.107
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.193.66.11
>telnet localhost 5003
    see above
> W:\>telnet 164.92.2.52 5003
   black screen hangs
0
 

Author Comment

by:tmonteit
Comment Utility
The machine I'm on is the IP of the ipconfig command above.
0
 
LVL 24

Accepted Solution

by:
rfc1180 earned 300 total points
Comment Utility
can you try on the server that is listening on 5003

log onto 164.92.2.52

and
telnet 164.92.2.52 5003
telnet localhost 5003

or check netstat to see if it is listening


sounds like there is a policy deny access to 5003 or the port is not bound to the IP

Billy

0
Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

 

Author Comment

by:tmonteit
Comment Utility

telnet 164.92.2.52 5003 -- Conection Failed
telnet localhost 5003 - hangs
Please help me fill in the blank here.
To my audience:
"The reason you cannot connect to filemaker server is because _______"
0
 
LVL 24

Expert Comment

by:rfc1180
Comment Utility
"The reason you cannot connect to filemaker server is because _it is not bound to the IP______"

is the service running?
Is the service UDP?

Billy
0
 

Author Comment

by:tmonteit
Comment Utility
Service is running.
Service is Filemaker Pro Server TCP/UDP.
McAffee is also running and I can't turn it off, I'm not admin.
 
0
 
LVL 2

Expert Comment

by:ErikCayre
Comment Utility
In Filemaker on a user machine which is supposed to access the server:

-Open remote...
-Host: fmnet:/serverIP/fmdbname.fp7

What happens?
0
 
LVL 24

Expert Comment

by:rfc1180
Comment Utility
Well, if is TCP and you can not connect to port 5003 and you can not disable mcafee (Assuming it has firewall features), then you need to contact the admin to allow the port through.

Billy
0
 
LVL 12

Assisted Solution

by:Rant32
Rant32 earned 50 total points
Comment Utility
To find out if the database server is listening on 5003 at all, type:

netstat -an | find ":5003"

Please post the output.

McAfee VSE 8.7 does have Access Protection for outbound traffic, but the default configuration does not restrict this port.
0
 

Author Comment

by:tmonteit
Comment Utility
Thanks all for this.  You provided enough troubleshooting tips to at least explain the problem.  As this was done in the midst of a live presentation, time was short and our troubleshooting detracted from our demo.  
We concluded that McAffee was blocking 5003 and that no one had permissions to disable McAffee.  We were able to circumvent with another laptop through wireless that wasn't constrained by McAffee.
Points will shortly be awarded to all who helped out.  Again, many thanks!
 
 
0
 

Author Comment

by:tmonteit
Comment Utility
Confused about how the sysytem is trying close this question.  This interaction seems to be a bit different.  Question was answered.
0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

What’s a web proxy server? A proxy server is a server that goes between clients and web servers, used in corporate to enforce corporate browsing policy and ensure security. Proxy servers are commonly used in three modes. A)    Forward proxy …
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now