Sending IP packets -- Urgent!!!!

I am trying to write a simulator that sends packets on top of IP (it is actually a L2TP over IP). how can I send packets over IP only (where I will handle the transport layer -- not UDP or TCP)
Thanks
Yair

tst wrote:
LabVIEW does not have built-in functions for this. The TCP and UDP primitives both allow LabVIEW to work only in the application layer.
You might be able to call some external code to do this, e.g. calling WinPcap.
Another Yair N.
WinPcap is for intercepting network traffic. No need to use that. Instead you should try to look into the Winsock API in wsock32.dll. It is mostly a BSD socket implementation with some Microsoft specific additions, but those are not really that important anymore for Win 32 bit. MSDN has all the required information how to call this API. However it is not exactly LabVIEW friendly in some parts so a wrapper DLL might be at its place.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

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How to send a packet through a specific Inferface ?

Hello!
I have 3 interfaces in my pc : LAN / WLAN / 3G
On LAN I have a global IP.
On WLAN and 3G I'm behind NAT.
I'm coding a program (client+srv) >
I watch a video streaming on LAN then I switch to WLAN or 3G and I want it to happen seamless. So basecly seamless vertical handover is my goal.
Because I'm behind a NAT (3G,WLAN) First I have to send a packet to the server (connection initialization). When the server sends the stream to me it actually sends it to the NAT and the NAT will fwd it to me.
The NAT send the packets back to me only if>
1. the server sends from the same port which it received the request form the NAT
2. It have to send to the same NAT (ip+port) address where the request came from
3. NAT will send then the packet back to my PC to the same port where I sent my request from.
Here comes my big problem!
I have a socket bound to a IP1 and port (e.g. WLAN) if I want to send a packet to an destination IPx for which the route table has the LAN interface as default gateway (IP2), then it will send my packet trough the LAN (IP2) but the source IP will be IP1 in the packet.
Basecly I have a WLAN package on my LAN.
This is bad for me in 2 ways.
1. there won't be a NAT binding for my WLAN
2. the packet won't even make it to the server because the very first router will throw it away since it's source IP is not a LAN IP
SO,
is there a way in Java, to send a packet thorugh a specific interface???
Thx for the kind help!
r0hamkuka

I used NetworkInterface.getNetworkInterfaces() to get all avaliable interfaces. After that I used this: interfaceSocket = new DatagramSocket(6000, interfaceIp); for all my interfaces with different interfaceIp of course
The I tried to send a packet to 153.66.200.155 for example (LAN address) through my WLAN interface (ip for example: 192.168.1.101) using WLAN's interfaceSocket.send()
But the packet goes out on my LAN interface (ip 153.66.200.166) while the src ip is still 192.168.1.101 in the packet. That is why I sad WLAN packet on LAN interface.
I guess the reason is still the routing table. Because routing table tells which IF to use for a destination IP. Of course for dest 153.66.x.x routing table contains 153.66.200.166 as the gateway and not 192.168.1.101. So Win uses this the LAN IF to send the packet.

SUN OS 5.8 --Sending Null packets originating from 127.0.0.1

Hia,
I am running Sun Solaris 5.8 on E-250 Sparc machine. The problem is my machine is continuously sending unwanted packets with a Src address 127.0.0.1 to the network. If I stop ot put down lo0 inrterface, the bombardment stopped....
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This forum is for C++. To clarify, you appear to be talking about C code compiled with the C compiler. Is that correct? (There is a separate forum for C: [http://forums.sun.com/forum.jspa?forumID=849]
Please post code examples between "code" tags. Otherwise, the forum software interprets some punctuation as formatting directives, changing the code beyond recognition.
Please clarify whether you are talking about integer or floating-point divide-by-zero, and whether the zero divisor is a compile-time constant.
Finally, please show the compiler options being used. They can also make a difference.

Send xML packet to TCP/IP socket in SOA 11g

Send xML packet to TCP/IP socket in SOA 11g
Hi,
I have a requirement like
I need to pass xml data to TCP/IP socket in the form of packets in SOA11g.
How we can do this.Please advise me.step by step procedure helps more.

Hi,
There is a JCA Adapter for Sockets available... Have a look at this doc...
http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_sock.htm#BABEBEJH
Cheers,
Vlad

Make a Cisco SPA 303 ring by sending a packet through your network?

Hey Guys,
I was wondering, and I need to know for my business, is there any way at all for me to make my Cisco SPA 303 VOIP Phone to ring by sending a packet through my local network?
I would like to just be able to click a button or send a command throught the command prompt and make it ring, but I don't know if there is any way for this to happen.
Thank!

Do you know perl?
I had same issue and I wrote a simple perl script that works as wake up service.
PERL is an interpreted language and so can be executed on Linux and Windows operating systems. Linux can interpret perl natively while for Windows you can download many free interpreters like Activeperl or Strawberry perl. To run the script you must use a third party server.
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Files have this particular format: file name is equal to calling party number and file content is the alarm time in 24 hours format with : as separator between hours and minutes.
e.g.
ext. 101 must be called at 8 am ---> write the file 101.txt with the content 08:00
ext. 101 must be called at 8:30 am ---> write the file 101.txt with the content 08:30
There is a limitation: if you activate the Authentication for SIP messages and there are more then two simultaneous calls, the script sends some INVITEs without authentication or with wrong checksum and so not all phones ring. This problem is under investigation.
Are you intresting?
Regards.

Need to send 32 packet within 15ms through UDP

Hi all,
I need to send 32 packet within 15ms through UDP in labview 2012. Each packet carries 2560 bytes. If it can able to send all packet within 7 or 8 ms, then it should wait upto 15ms and again it should repeat the same.
Please, anyone help me.
My code is as below.
Thanks,
Attachments:
DAC_labview.zip ‏49 KB

I wouldn't go that far, Shane.
I think that there is some confusion/misunderstand around this topic.
YES, you can use LV to send data using UDP and TCP to other systems.
NO, UDP by itself does not ensure lossless data transfer. So UDP can lose packets. That is something which LV cannot influence by any means. TCP is a lossless protocol which should be used if you require the security.
NO, neither TCP nor UDP are deterministic. So even if the packages you are sending are sent within a time x ms, there is no one garantee of any means that this happens EVERY time. Sometime packages might take a multiple of this time.
NO, transfer times are not influenced by the sending PC at a primary level. It all depends on your network; if the network sucks, using UDP packages are lost. If using TCP, packages are resent, so it also depends on sender and receiver alike.
Norbert
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.

Sending udp packets using java and receiving it using c

hi,
Is it possible to send udp packets using java and receive the same using c??????? if yes.... plz help immediately.

The biggest issue is data format. The JVM is big endian, with 16-bit characters. The machine running 'C' could be almost anything. A (signed!) byte array is probably the easiest unit of exchange.
The Java program has its own techniques for storing/retrieving data to/from the byte array - and the C program has its own techniques. ASCII Strings are often the easiest to exchange - just convert the java String objects to byte array and send them.
apaliwal1 has already given the UDP calls to send/receive the data.

Why Firefox for Android is causing The Linux kernel to send data packets to random sites?

I've recently installed CyanogenMod on my Nexus 5. Shorty after installing CyanogenMod I decided to install Firefox on my device from here:
https://f-droid.org/repository/browse/?fdid=org.mozilla.firefox
Afrer installing it I decided to install a frontend application for IPtabels from here:
https://f-droid.org/repository/browse/?fdid=dev.ukanth.ufirewall
After installing it I blocked some applications from accessing my data networks, including The
Linux kernel. After some hours passed I took a look at the firewall log and I noticed that the firewall
has blocked several data packets from accessing the internet. The log also showed the IP addresses where
the data packets were being sent. I decided to find out to whom these IP adresses belonged. The results were
rather strange. One particular IP belonged to a French ISP, one on the other hand belonged to a Finnish ISP.
Finally I found one IP that made some sense. That IP belonged to Mozilla. However, at this point I couldn't be sure
that Firefox was causing this behaviour. So I did a little test. I re-installed CyanogenMod on my Nexus 7.
I connected my Nexus 7 to my WiFi-network at my home and I installed the same frontend application for IPtables
on my device. I configured the firewall the same way I did for my phone, so The Linux kernel was also blocked
from accessing any data networks. I surfed the web with my device and did some other things with it. I also checked the
firewall log from time to time, and no applications showed up in the log. So I installed Firefox on my device. And immediately
after installing it The Linux kernel was trying to send data packets to the same IP addresses. Now I was almost completely sure
that Firefox was indeed causing this strange behaviour.
Here are some addresses where The Linux Kernel was trying to send data packets:
69.50.225.155
63.245.217.219
72.167.239.239
23.43.139.27
74.125.232.107
193.229.109.41
63.245.217.160
94.23.204.140
Conclusion:
*I downloaded CyanogenMod from the projects official site and I checked the md5sums of the files
I downloaded before I flashed anything onto my device
*I installed all the applications on my devices (including Firefox) from here: https://f-droid.org
*I didn't do anything stupid with my devices so I dont' think that they were infected with malware
*I changed Firefox settings so that it didn't share any data with Mozilla
So I'd like to have some answers to the following questions:
1)Why Firefox is causing the Linux kernel to send data to these IP addresses and is there any way
to turn this "feature" off?
2)Do the other versions of Firefox and other Mozilla software (Thunderbird etc.) also include this form of snooping?

* 69.50.225.155 - belongs to the EFF, you likely have https everywhere installed
* 63.245.217.219 - aus4.vips.phx1.mozilla.com - Extension update check
* 72.167.239.239 - a1plpkivs-v03.any.prod.ash1.secureserver.net - some GoDaddy hosted site - extension?
* 23.43.139.27 - a23-43-139-27.deploy.static.akamaitechnologies.com - I don't know, Akamai is a world leader in geo distributed websites/services
* 74.125.232.107 - Google - search suggestions or malware/phishing protection database updates
* 193.229.109.41 - not registered to any website - searching seems to suggest it is owned by https://en.wikipedia.org/wiki/Elisa_%28company%29 possibly your ISP or Mobile data provider
* 63.245.217.160 - addons-versioncheck-single1.zlb.phx.mozilla.net - extension update check
* 94.23.204.140 - something related to f-droid.com

On how to avoid sending RR packet

Could anybody do me a favor? Right now ,I'm doing some research on the JMF platform, and the protocol requires one-way(uni-directional) channels only. So how to prevent the receiver from sending RR packets , and should I change(extend) RtpManager class ?

I'm not sure what to tell you. The only way I can see you might get confused between the messages in the list is if you don't have a contact name associated with a phone number. If that's the case, you/your girlfriend should make sure to update the Contacts database (you can do so from a message by clicking Add Contact).
Once that's done, the name of each person appears both in the message list, and above the message thread. There's not a lot of room in that top space in the thread, so if it's a long name, it will be truncated (13 characters, I think, is about the limit). So if you have one frequently-texted friend called John Appleseed and one called John Appleseeger, that would cause problems. But you can always turn the phone on its side to switch orientation and double-check the name.
You might check the app store for txt apps, but I believe all of them use an "alternate" SMS system (ie, not the one built into your phone) so may charge for txts. However, here's one that displays contact photos and then uses the built-in SMS to write a message (I haven't tried it):
http://itunes.apple.com/us/app/sms-favorites-text-messaging/id401901736?mt=8
Matt

How to send RTP packet through SIP Dialog

Hello there !
I work on a Java softphone which use JMF and Jain-SIP. I know JMF is "old" but I think it would be simple to capture and transmit RTP audio. So, my SIP dialog is working, I can send text messages but now, I would like to send RTP with this SIP session. I know I have to send SDP messages for codec convenience but then, what is the MediaLocator for RTP packet ? Only SIP User Agent IP or something else ?
I also accept all ressources that can help me achieve my work :)

I have no idea how SIP works, but, RTP packets go to an IP:PORT... theoretically, in the SIP phonecall setup, I'd imagine you'd have to be given the address to send RTP packets to the remote phone. Or perhaps the port is already well-defined by the SIP standard.
Either way, you should have a way of knowing / finding out which PORT to send to for your SIP call, either from the call setup or the SIP standard itself.

Sending TCP packets to many IP addresses after downloading a program

I constantly monitor UDP and TCP packets sent to IP addresses on my Windows 7 computer. After downloading a free online program to convert media video files, I soon noticed my computer constantly and rapidly sending out packets to more
than 10 IP addresses (and quite a few were going to China, Russia and Germany). I tried a search on my hard drive for the file that contained those specific IP addresses and found nothing.
Note: For Viewing Folders, I do not hide operating system files, and I show hidden files, folders and drives.
Then I tried searching my windows registry (via REGEDIT) for those IP addresses and found nothing.
I assumed these IP addresses may have been hidden and included in a .dll file. I could not find an answer on the internet to determine where these hacking IP addresses originated from, so I deleted the program and rebooted.
The problem still existed, so I had to restore to a previous backup date. The restore fixed the problem. I am so confused. If I wasn't monitoring my connections I would never have known about this hacking flaw in Windows 7 security. I
still don't know what type of file(s) were causing this problem. Or what causes my computer to send unsolicited packets to so many IP addresses (to domestic, foreign and hostile locations).

Message to members... DO NOT download the software in this area.
Contains malicious code.
Thank you FangZhou Chen for your response. I am not exactly sure which of these two programs (listed below) was the culprit for this problem, but I do know that both programs have issues with malicious code. Understand I have used both of these programs
in the past, but stopped using them because of these issues. The Freeware #1 was my favorite and was user friendly, until the malicious code was added, and may be the real culprit.
Malicious Freeware #1: Any Video Converter (program name: avc-free.exe)
This program contains PUP.Optional.OpenCandy - While PUP.Optional.OpenCandy is not technically a virus, this PUP can be extremely annoying and quite difficult to get rid of. It comes loaded with adware, which as anyone who has been infected by adware can tell
you, can drive you to the brink of insanity with its relentless adverts, plus it will very likely hijack your browser and install a strange and unwanted toolbar on your machine too. Not only do unwanted toolbars get in the way but they can direct you to websites
that the creators want you to visit and can in general make using your computer a real user-unfriendly experience. PUP.Optional.OpenCandy is also a form of spyware which enables it to be installed deep within your PC’s operating system so that it is harder
for you to find – and therefore delete.
Link to site:              any-video-converter.com/products/for_video_free/
Link to download program: any-video-converter.com/download-avc-free.php
Malicious Freeware #2: SUPER © Media Converter Encoder
This program is bundled with other software. I don't remember the malicious type or effects.
Link to site:             erightsoft.com/SUPER.html
Link to download program: erightsoft.info/GetFile3.php?SUPERsetup.exe
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P.S. - Excellent tools in cleaning up maleware have been to use Malwarebytes, AdwCleaner and  HitmanPro (both recommended by the malwarebytes.org website).

Syslog server showing: Fatal error: : unable to send NTP packet to ::ffff:172.23.254.89.

I am working o a case where a syslog server is showing the following log:
"DW2WLC01.SYS: *sntpReceiveTask: #SNTP-3-FATAL_ERROR_OCCURED: sntp_main.c:233 Fatal error: : unable to send NTP packet to ::ffff:172.23.254.89."
I have been doing reasearch around but I have not found cases related or log explanations, the only thing I found related is bug CSCug11763. However this bug doesn't offer further details.
5508 WLC is running 7.6.100
Anyone has any idea about the possible meanings of that log?

Hi, Please try to disable IPv6 and then check it:
(WLC) >config ipv6 disable
If still same error comes then please raise a TAC case.
Regards
Dont forget to rate helpful posts

IS IT POSSIBLE TO SEND TCP PACKET WITH THE SOCKET?

Hello everybody iam programing HIJACK attack with jbuilder8 that consiste to detecte a communication between the client and server (tcp session or tcp connexion) and read all informations from this tcp packet(like N�ACK,N� SEQ..) and finnaly send a tcp packet with false information. I have make this project with C under linux(red hat9) compiled with GCC and i have used raw socket like this:
int creat_socket(char *interface)
int fd;
struct ifreq ifr;
struct sockaddr_ll sll;
if ((fd=socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)))==-1)//creat socket {
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memset(&ifr, 0, sizeof(struct ifreq));//remplir ifr par des '0'
strcpy(ifr.ifr_name, interface);//copier le nom de l'interface ds ifr_name
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memset(&sll, 0, sizeof(struct sockaddr_ll));//remplir sll par des '0'
sll.sll_family=PF_PACKET;
sll.sll_ifindex=ifr.ifr_ifindex;
sll.sll_protocol=htons(ETH_P_ALL);
if (bind(fd, (struct sockaddr *)&sll, sizeof(struct sockaddr_ll))==-1)//lie le socket a l'interface
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     perror("ioctl");
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if (ioctl(fd, SIOCSIFFLAGS, &ifr)==-1)////ecrire les attributs actifs du p�riph�rique
     perror("ioctl");
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return fd;
PROBLEM : I want to know if it�s possible to make that in java because i had search and i have found just the client and server socket but i want a socket to send tcp Packet? Thank you.

hello i had found the ROCKSAW (http://www.savarese.org/software/rocksaw.html ) and i had used in my program, but when the program arrived in:
socket_send=new RawSocket();
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java.lang.UnsupportedClassVersionError: org/savarese/rocksaw/net/RawSocket (Unsupported major.minor version 49.0)
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     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
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     at hijack.M_HIJACK.injection_actionPerformed(M_HIJACK.java:611)
     at hijack.M_HIJACK_injection_actionAdapter.actionPerformed(M_HIJACK.java:861)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
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     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:257)
     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
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     at java.awt.Component.processEvent(Component.java:4890)
     at java.awt.Container.processEvent(Container.java:1566)
     at java.awt.Component.dispatchEventImpl(Component.java:3598)
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Directly sending RTP Packets

Hello,
I have a media file divided in chunks on disk.
I want to stream the whole media file with RTP. How can I do that? Can you directly send RTP Packets?
For example:
for every chunk i
   for (every 1000 bytes b[] in i)
      sendRTPPacket(b[]) //this creates a new RTP Packet with the contents of b[] and sends itIs that possible?
If that is not possible, I have another idea:
If I open a different RTP session for each chunk (so I can just specify as dataSource the actual chunk file), can I synchronize that at the receiver side? how can I then reconstruct the whole file ?
How would you do that?
Thank you!

Hello,
after searchig the internet, I found this:
http://forums.sun.com/thread.jspa?threadID=5356475&tstart=1
I think creating a customized Push DataSource will work fine, what do you think? it would push data each time a new chunk is available.
I tried the example on http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/LiveData.html but I'm not sure how to use it: I cannot register it.
I would like to see the results on a player, so I used a player that I have:
DataSource dataSource = new DataSource();
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If I call dataSource.connect() I get:
java.lang.ClassCastException: [B cannot be cast to [I
     at com.omnividea.media.renderer.video.Java2DRenderer.bufferToImage(Java2DRenderer.java:131)
     at com.omnividea.media.renderer.video.Java2DRenderer.process(Java2DRenderer.java:105)
     at com.sun.media.BasicRendererModule.processBuffer(BasicRendererModule.java:728)
     at com.sun.media.BasicRendererModule.scheduleBuffer(BasicRendererModule.java:499)
     at com.sun.media.BasicRendererModule.doProcess(BasicRendererModule.java:400)
     at com.sun.media.RenderThread.process(BasicRendererModule.java:1114)
     at com.sun.media.util.LoopThread.run(LoopThread.java:135)
Do you have a media player where this works? or can you tell me how to use the example, maybe without explicitly registering the new dataSource, to play media in a media player?
What do you think about the idea of creating a similar DataSource (push) in order to push the data chunks that we have already into it?
Thanks!
Edited by: thawxx on Mar 11, 2009 7:20 PM

Send broadcast packets over VPN

How can I send broadcast packets over vpn , something like bcrelay in poptop linux ?

Hi,
Do you want forward NetBIOS broadcast?
If so, open RRAS console, right clieck VPN server, properties, IPv4, check the option Enable broadcast name resolution.
Hope this helps.

Sending IP packets -- Urgent!!!!

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