UDP in 3G connections

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• UDP connection via wifi in the name of 8320 tunnel met IOException:Invalid

  I am new to Java, trying to open a UDP connection on wifi in my BB8320 (V4.2.2.180).

  I have connected to my 8320 to a WiFi network and that you can access Web page in the browser (configuration: Wi - Fi browser).

  I tried with: Connector.open (DatagramConnection) (datagram://192.168.1.101:5009) and Connector.open (DatagramConnection) (udp://192.168.1.101:5009), but all got IOException:Invalid name of the tunnel.)

  Here's my Mobile Network Options in the camera: Data Services - on; Connection preference - Wi - Fi only.

  The same code works fine in the emulator, tested in a wired network.

  I googled this IOException, it seems that the TCP APN cannot be null, I tried with blackberry.net cmnet, wap.voicestream.com and even the name of the Wi - Fi connection, everyone met time-out problem.

  I have some questions below:

  1. is there any configuration that I missed?

  2. the UDP connection via wifi check the AFN? The APN configured in the emulator is null.

  3. do UDP and TCP connection API need permission in the device?

  Appreciate for any suggestions!

  Sam

  I did in the past, and IIRC the trick was to add: «;» interface = wifi; deviceside = true"to your connection string. for example:

  Connector.Open ("udp://192.168.1.101:5009; interface = wifi; deviceside = true ")"

• Windows 7 64 - bit open TCP and UDP ports

  Well im clearly online but when I open original (battlefield 3) that it says im offline, so I spoke with the original technology and they gave me 2 hours of bs to do and then he said that I had to open the ports and they sent me a link for 32 bit windows (https://help.ea.com/article/opening-tcp-or-udp-ports-for-connection-issues.) I told them I did not 'my network places' and they didn't know why... I told them it was 64-bit another 5 - 6 times and they kept on trying to make me do the 32-bit installation. idk why. but in any case, I searched google and could not find an answer that is not covered in random bs or my 64-bit windows did not have this which is suppose to be on the list.

  Step 3 is not there? I got a list or change the settings of the licensed features... He didn't add the port!

  for example

  Method 2: Configure your system to allow access to the game servers. The firewall or the router must allow unrestricted communication on TCP and UDP Port number 3724. World of Warcraft (WoW) game client uses TCP whereas Voice Chat features use UDP. To open a port in Windows Firewall:

  1. open the Windows Firewall by clicking Start , clicking Control Panel, clicking Security, and then clicking on Windows Firewall.

  2. click allow a program through Windows Firewall.  If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

  3. click on the port of Add. {THIS ISN'T ON MY PC}
  

  4. in the name box, type a name that will help you remember what the port is used.

  5. in the Port number box, type the port number IE 3724

  6. click on TCP or UDP, depending on the Protocol.

  7. to change the scope of the port, click Change scope, and then click the option that you want to use. ("Scope" refers to the set of computers that can use this port opening).

  So im hoping you guys can link me to a up to this way to change the ports that will be on my windows 7 64 bit

  Hi Fostard,

  If I understand well you face any problem with not able to connect to the internet.

  I understand that it must be frustrating, but don't worry, we are here to help solve the problem and guide you in the right direction.

  You can go through the steps from the link and check if it helps.

  Hope this information was helpful and let us know if you need more assistance. We will be happy to help you.

• XP pro and questions conectivity PLC

  Hi, we have small groups of installation work at home with a mixture of XP Home, XP pro SP3 and VISTA SP2 machines. There is a machine connects to the router via a SiteCom PLC (powerline LN-510). The problem is on the PLC link.

  Originally, this machine ran XP home and we cannot remember there being connectivity problems (connection speed varies sometimes but he always worked) we had to reinstall the machine rather then put home XP and add service packs, we have installed XP Pro SP3. Now the machine often fails to connect to the internet or other computers on the network. We noticed that Skype will connect, at least the user on this computer also appears online. I think there is a problem with TCP/IP because I think that Skype uses UDP? to connect.

  The utility this Sitecom PLC units are talking to each other. IPconfog shows that the machine asked and received an IP address. I also tried to use a fixed IP address.

  Is there something that can be configured on XP pro that we didn't need to configure on XP home?
  Thank you very much!

  Hello

  Powerline units use the encryption and need to open special ports

  Check the firewall and make sure it does not block traffic and the ports that are required for using Skye or similar requests are transmitted correctly.

  Example, http://www.skype.com/intl/en-us/support/user-guides/firewalls
  /Technical/

• Question behaviour ASA

  Hi all

  I have a question in a test environment, mount the topology as the attachment and inserting the wing 172.16.2.0/24 road via 192.168.0.10 network the ping command works, but any protocol oriented to connect does not work. Monitors with the debug command and noticed that the parcel leaves the station whose 192.168.1.3 IP address to the IP 172.16.2.2 successfully, the package with the SYN flag arrives and when the 172.16.2.2 server responds with ACK flag returns without problem. But when the station which the IP 192.168.1.3 returns the package with flag SYN/ACK the Cisco ASA receives a packet and the acknowledgement of receipt is not returned by the ASA cisco asa result seems to lose the package and run a disassembly and the connection is not completed. I think it's because as the cisco asa can understand this behavior as a main-in-the-middle attack. Is there a way to disable this control in cisco ASA. I ask that the level of knowledge, because this scenario will not be used.

  Kind regards.

  8.4 is not a valid version of ASA. You can run 8.0 (4). This bypass feature state TCP is available after 8.2 (1) or after.

  "permit ip any any" simply States that all UDP and TCP connections are allowed. However, the ASA will always inspect two fittings for security of State and others. In the case of TCP, the first packet MUST be a SYN. otherwise without the SYN, we should never see a SYN - ACK packet. A syslog message, 'Right TCP (no relation)', would ensue if we saw the SYN - ACK without the SYN packet

  Best regards

  Kevin

• RV120W ROUTER/firewall "cannot display the webpage".

  I have a small LAN using a T1 of One Communications line.  Static IP address.

  30 workstations.  Windows 2003 DHCP server.

  Installed new RV-120W firewall router last week replacing an old unit of Netgear.

  Configure VPN tunnel on the unit, have remote access for about 10 users.

  This part works well.  A little slow, but acceptable.

  My question: is internet connectivity on internal LAN in and out.  She's very agitated.

  Upload and download speed has been consistent (~2.5M/sec)

  External Pings see the very minimal loss.

  Users have seem intermittent loss of web streams and corrupt downloads.  web activity 90% is ok, but we continue then getting "cannot display the webpage error."

  NSLOOKUP displays the DNS, but occasssionally "TIMEOUT" occurs.

  I got the provider perform loopback tests and replace WIC on CISCO 1841 router T1, but I still see the behavior.

  I see by reading other forms, that it is an ongoing problem with the routers of RV.

  My settings...

  Public static IP / DNS on the router.

  Reverses the MTU to 1500.  I have adjusted downwards by increment to 1350.

  Windows Server 2003 has RV120W address as the router / gateway.

  T1 to CISCO 1841 ROUTER... to CISCO RV120W... to LAN CISCO SLM248G interrrupteurs (2).

  I do not configure all redirects the port.

  I continue the line tests on my end, but as I said this problem was not existing with Netgear unit.

  Please indicate any change of setting / suggestions.

  Hi Jason et al...

  In my view, the technician are now experiencing a UDP on the Rv120W question.

  The internal discussions on the issue of R & D and development seems to be;

  1. default on RV120W a UDP Flood attack control that limit 25 UDP by customer connections in one case there, IE to a particular instance of time a PC behind the router can establish only 25 UDP Transactions, if we exceed router drops packets UDP.

  2. we have a script that sends dns queries to search at a very high pace that the router deletes the entries in the UDP, in this way, that we accumulate the UDP entry in the router table (IE 25 entries)

  3. once 25 limit is reached, we are unable to resolve DNS queries, in addition to using the script or by using the browser.

  4. in real-world scenarios it could be a PC behind the router and open a website where all the elements on the Web page are related to the different website, if you open this type of Web site, it may have links to over 25 different site and clog the table routers UDP for the PC and the user may not able to solve queries DNS additional and impossible of browse all new Web sites. This inability to browse happens until the UDP entries on the router time dead and are deleted.

  5. this limit of 25 is because of the feature called raw block UDP on the router that is enabled by default.

  6. once we disable the block UDP Flood, router does not check 25 connections limit UDP and dns resolution is continuous, without interruption.

  This is a customers in the area could be to see breaks in the DNS resolutions and browse site failed.

  Some customers talked explicitly about DNS failures.

  Jason I see that you have placed a service call, so I hope that CCORAL who posted August 15 should be helping you.

  So people, if the technician finds the problem not a hardware issue requiring an RMA, the technician will intensify the call for our people of level 2 in the Irvine case, probably CCORAL.  You will get a help to solve this problem.

  The small business support center, should be aware of the problem. Please do not hesitate to show them this announcement, I am ready to discuss with them to get things moving.

  Yet once, if you have not already done, please contact the HWC and place a request for service and keep a copy of this number they give you as a reference (you can need). My apologies for the inconvenience that you all had.

  concerning

  Dave Hornstein

  Small businesses, channel system engineer

  Cisco - Research Triangle Park.  U.S..

  http://www.Cisco.com/en/us/support/tsd_cisco_small_business_support_center_contacts.html

• Nested PCoIP possible links?

  I have a client with several layers of firewall between their networks of production and the internet.  Is it possible to use the gateway service PCoIP to go from the server security for a connection to the server, then to desktop computers?  It should look like the following:

  Remote client-> FW-> Security-> FW-connection server > server-> FW-> desktop.

  Their company policy currently does not allow traffic where the Security server to go directly to the office network.  Is a configuration like this with PCoIP gateway services?  What I've read so far, I don't think anyone, but it must be confirmed.

  Thank you.

  klamero wrote:

  What I've read so far, I don't think anyone, but it must be confirmed.

  Thank you.

  You are right. PCoIP nested gateways are not supported.

  Security server must transmit PCoIP virtual offices.

  You can not do:

  Remote client-> FW-> Security-> FW Server-> server-> FW-> Desktop connection.

  You can do:

  Remote client-> FW-> Reverse Proxy TCP / UDP-> FW-> Security-> connect to Server server-> FW-> Desktop.

  Mark

• Localhost UDP connection between FCR and Matlab

  Hi all

  I have a question about the connection between Matlab and FCR UDP. My idea is to Exchange data between Matlab and Labview on the same computer.

  So I found the 'UDP Simple' of the FCR 2.0 sample project where periodically a datasample is generated randomly and sent to the remoteport 61557 local host. In the project a 'fractional number of string for transmission' is used for the transmission of data. The receiver of the sample project reads from the same port to receive the datasample.

  Now, I'm interested to read this simple stream from Matlab (just at first), however, it does not work and I'm not sure why. What I do in Matlab is the following (code Matlab)

  delete variables;
  u = udp ('127.0.0.1', 61557); % Of installation UDP Object
  fopen (u); open reading port %
  A = fread (u, 1);  % read an element
  fclose (u);

  With this code, however, I get a timeout by saying: "' WARNING: unsuccessful reading: the amount of data specified has not been returned within the time limit." "

  I'm not sure why this happens, maybe you could help me out here? I guess that the formet serving to VCF is not the same as in Matlab? Maybe the Terminators are not the same?

  See you soon,.

  Steve0

  Hey

  So, regarding the problem actually, I found the solution today. It was not the firewall, but a simple configuration in Matlab seting the UDP port. So the side of Matlab, to change the definition of udp object according to

  u = udp ('127.0.0.1', 'Thelocalport', 61557);

  If you have

  u = udp ('127.0.0.1', 'Thelocalport', 61557);
  fopen (u);

  A = fread (u)

  fclose (u);
  Delete (u);

  Who does the trick and you can read from the port. Then of course you say Matlab that you read from the "LocalPort" x, which I wasn't aware of.

  On the transmitter side, you simply:

  u = udp ('127.0.0.1', 61557);

  fopen (u);

  fwrite (u, '1');

  fclose (u);
  Delete (u);

  Here, you set just the port of transmiting.

  About the format of the data: I used the simple UDP protocol streaming Comms project where a random number is generated as a double, transformed into a string (ASCII values) and transmitted. At the level of the receiver, you get as much the UDP packet with the ASCII values that you must turn if you want to find the number.

  I hope this helps anyone having the same problem.

  See you soon

• CRIO 9031 UDP connection

  Hello

  Anyone know if a cRIO 9031 can be set to read a UDP port? I put my cRIO as an FPGA and I do not see the function of UDP connection anywhere. I have walked through and found no examples either. The PIC of these loopholes is attached. Do I need additional software installed in Labview. I'm using LabView 2015 SP1

  Any help is appreciated.

  Hi CEAR,

  It can, but not on the target FPGA.

  The VI you have created is under the FPGA target in the project tree. These support fewer functions than the parties in real time or office that is why you do not find the pallets.

  If you create a new VI by clicking to the right where it says 'Nor-CRIO9031-Test' to the place where it says FPGA and create a new VI then you create a VI in real-time. These can do things more screws can including UDP.

• TCP (UDP) connection with Blackfin

  Hello!

  I BF-537 EZ - KIT Lite and I'm trying to create a simple server in there. I found following problem: listening TCP port does not respect the time-out: it waits until the client establishes the connection for always (value of timeout regardless). Same thing happens to «UDP read» In addition, these screws completely block the execution so the parallel loop is thus blocked. I've found the workaround: If you wrap all timed loop loops, they run all in parallel; the connection listener is still stuck and waiting forever, but the other loops run.

  Is TI WHEREAS behavior? Suggestions to combat it?

  Thank you!

  
  

• FPGA for PC via UDP connection

  Hi all

  Background

  I am currently working on a project to interface an FPGA with a PC, to send a UDP load prepared on the FPGA for the PC. The FPGA is preparing a payload of 18 hexadecimal bytes from h00 8' to 8' h11 and then transmits it via a local network on port 1024, between the FPGA and a second network card in the PC, with static IP assigned to the second network card and the FPGA. Packages leave the FPGA and reached the PC (tested with wireshark) but the vi does not appear meet the payload and display it on the screen in the vi. The vi is based on that comes with labview and only has a few adjustments for most simply to write the final packages saved to a text file.

  Problem:

  Initially, when the vi was run the length of the chain kept evaluate to zero and so he perceived no bytes don't read from the port. I then inserted the flatten channel vi after the UDP read and before the comparison of string length (after reading something on the forum), now the length of the string is not evaluated to zero to 4 instead of this, I also changed the display to the spell option but the same 4 Hexagon keep coming through '0000 0000 0000 0D0A' , but they are not those who have been sent from the FPGA (are they an error message?) and not those taken over by wireshark. In summary, I seem to not be able to read the data of the UDP payload in Labview.

  I tested the VI locally using the Protocol UDP send labview vi and vi (slightly) custom receiver and it still works. The receiver that VI is attached.

  Any suggestions would be great,

  Thank you

  James.

  You can share the wireshark log (preferably in a format based on text that I did not install Wireshark)?

  Are you sure that is no firewall problem? If you are using a firewall, disable it completely for this network card or at least ensure that it accepts connections on UDP Port 1024.

  In addition, set the UDP sender VI on another computer and see if you are still receiving data. If it works, compare logs wireshark compared to what is sent by the FPGA and search for differences. If this does not work, then you have a network like a firewall problem.

• Windows PE and 7 clients trying to connect to servers on port UDP 500

  We have a lot of nie on our internal firewall from various machines in our area who are trying to connect to servers on port UDP 500 that are fill newspapers on the firewall. Servers usually aren't domain controllers, some are Terminal Server servers and one our imaging Server (LANDesk). Clients fail to connect to the VPN either. We do not use IPSEC anywhere in their own country.

  It seems that UDP500 traffic is generated when accessing other services on the server such as RDP or file-sharing, not all clients are and stop the IKE and AuthIP IPsec Keying Modules service on the client seems to stop packets. So I think I know what it does but I don't know why. I have some screenshots of our managed service provider package and connected remotely to a system running Windows PE, looked with TCPView and valid traffic that packages stop when the IKE and AuthIP IPsec Keying Modules service is stopped. I do not think its malware.

  I'm really excited to know what mechanism is causing these packages and knowledge if we accept it or not.

  Any advice would be much appreciated.

  Thank you

  Paul

  Paul

  
  This issue is beyond the scope of this site and must be placed on Technet or MSDN
  http://social.technet.Microsoft.com/forums/en-us/home

  http://social.msdn.Microsoft.com/forums/en-us/home

• TCP/udp connection via the private wifi network

  I want to develop applications using the wireless private network with tcp/udp connection for my Blackberry 8320 (Version 4.2.2.180 without SIM), do I need authorisation from RIM so that they work in the unit? If it is true, how can I get permission?

  I noticed http://www.blackberryforums.com/wifi-hotzone/100800-8320-wi-fi-limited.html

  who says:

  "The Blackberry 8320 with wi - fi connection is limited. The only program that can use the wi - fi is the Blackberry browser... all the third-party programs... ie. Opera Mini, JiveTalk and even RIM's instant messaging programs. Yahoo Messenger, Windows Live Messenger, are all designed to connect using data from EDGE of the phone... None of them can detect or use the wi - fi! »

  If it is true now?

  You can use the interface = wifi parameter in the URL to specify that the connection should be performed by Wi - Fi.  However, please note that this setting is available in version 4.5.0 and highest BlackBerry device software.  Therefore, you must first put your BlackBerry handheld.  FURTER details can be found here:

  What - in different ways to establish an HTTP connection or socket
  Article number: DB-00396

  http://www.BlackBerry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is...

• Connection UDP, AFN and Blackberry signature setting.

  Hello world

  I'm having a problem to launch a connection udp on a blackberry 9000.

  I works well on a device, if I put the APN in the device settings (I am on telstra, the AFN is telstra.internet or telstra.wap)

  If the device does not have the correct apn defined, the udp connection throws an IOException; tunnel failed.

  When I try to put the AFN during the opening of the udp connection, I still get the same IOException.

  I open the connection as follows...

  UDP://serverAddress:ServerPort; localPort/Telstra.Internet

  I was wondering if someone sees something wrong with this, or if the application must be properly signed Blackberry. I could find no information saying that it is one of the RIM not limited of the api, given also that it works very well if the device is configured which leads me to believe that a signature will not fix this problem.

  Thanks for any comments.

  OK I found the problem,

  The url was somehow in the wrong format,

  J2ME, you can open a Udp connection in Server mode by not specifying any addresses, it does not work on blackberry.

• Impossible to receive packets from UDP broadcast on a PPP connection

  I'm fighting for two days now with no success. I have two modems (don't ask, some special stuff), which uses the dial-up access (PPP). I tried on windows XP and it works like a charm. I'll send unicast and broadcast UPD packets. If I repeat that on Windows 7, I can send only the data of unicast, broadcast packets seems to be lost somewhere, I tried to use the Microsoft network monitor, and I can see that broadcast packets are received on my PPP connection. But after that, they are gone. Somewhere in the kernel. I don't really understand why. I've disabled the firewall, antivirus, motor base, tried to open a session of abandoned filtering packed in the Windows Filtering Platform, clean the WIN7 machine I tried all without success.

  Here is an example of a packet received on the interface, but there most recent scope of my application:

  No.     Time               Source                Destination           Protocol Length Info
        1 13:20:56.093380000 192.168.1.50          192.168.1.255         UDP      49     Source port: x11  Destination port: x11
  
  Frame 1: 49 bytes on wire (392 bits), 49 bytes captured (392 bits)
      Encapsulation type: Ethernet (1)
      Arrival Time: May  7, 2014 13:20:56.093380000 Central Europe Daylight Time
      [Time shift for this packet: 0.000000000 seconds]
      Epoch Time: 1399461656.093380000 seconds
      [Time delta from previous captured frame: 0.000000000 seconds]
      [Time delta from previous displayed frame: 0.000000000 seconds]
      [Time since reference or first frame: 0.000000000 seconds]
      Frame Number: 1
      Frame Length: 49 bytes (392 bits)
      Capture Length: 49 bytes (392 bits)
      [Frame is marked: False]
      [Frame is ignored: False]
      [Protocols in frame: eth:ip:udp:data:vssmonitoring]
      [Coloring Rule Name: UDP]
      [Coloring Rule String: udp]
  Ethernet II, Src: ae:4e:20:00:01:00 (ae:4e:20:00:01:00), Dst: Xerox_00:00:00 (01:00:01:00:00:00)
      Destination: Xerox_00:00:00 (01:00:01:00:00:00)
          Address: Xerox_00:00:00 (01:00:01:00:00:00)
          .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
          .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
      Source: ae:4e:20:00:01:00 (ae:4e:20:00:01:00)
          Address: ae:4e:20:00:01:00 (ae:4e:20:00:01:00)
          .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
          .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
      Type: IP (0x0800)
  Internet Protocol Version 4, Src: 192.168.1.50 (192.168.1.50), Dst: 192.168.1.255 (192.168.1.255)
      Version: 4
      Header length: 20 bytes
      Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
          0000 00.. = Differentiated Services Codepoint: Default (0x00)
          .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
      Total Length: 34
      Identification: 0x0032 (50)
      Flags: 0x00
          0... .... = Reserved bit: Not set
          .0.. .... = Don't fragment: Not set
          ..0. .... = More fragments: Not set
      Fragment offset: 0
      Time to live: 126
      Protocol: UDP (17)
      Header checksum: 0xb817 [correct]
          [Good: True]
          [Bad: False]
      Source: 192.168.1.50 (192.168.1.50)
      Destination: 192.168.1.255 (192.168.1.255)
      [Source GeoIP: Unknown]
      [Destination GeoIP: Unknown]
  User Datagram Protocol, Src Port: x11 (6001), Dst Port: x11 (6001)
      Source port: x11 (6001)
      Destination port: x11 (6001)
      Length: 14
      Checksum: 0xafd1 [validation disabled]
          [Good Checksum: False]
          [Bad Checksum: False]
  Data (6 bytes)
  
  0000  34 34 34 34 34 34                                 444444
      Data: 343434343434
      [Length: 6]
  VSS-Monitoring ethernet trailer, Source Port: 127
      Src Port: 127
  

  I'm out of my ideas, if anyone could help with any idea, please do. I don't know if this possibility is removed on win7 or not.

  Hello

  I suggest you to report your query in the TechNet forums to improve assistance in this regard.

  http://social.technet.Microsoft.com/forums/Windows/en-us/home?category=w7itpro

  Hope this information helps.