• Help detecting packet loss in java

    Hi, I need to make a program in java which can detect packet over in TCP/IP on specific ports. I know this is possible yet I cannot find a RFC or any way to do this on the internet. Can someone give me an idea of how to do this? To be more specific, I've got to make a program for my dissertation...

    DanCal15 pointsBadges:
  • Is there a limit of on the number of TCP/IP connections on Windows Server 2008?

    I currently have a .NET service that listens on a single port over a TCP protocol. Here's the way it works: Our clients connect and transmit their data for periods at a time. Is there a limit on the # of connections on Windows Server 2008? I haven't hit any yet but I'm worried since our company is...

    ITKE344,705 pointsBadges:
  • What’s the largest TCP/IP port number for IPv4?

    I apologize if this is an "easy" question but I need to know what the largest TCP/IP network port number would be for IPv4. What would the range go up to?

    ITKE344,705 pointsBadges:
  • What tools can I use for TCP/IP error simulation?

    Using a multi-tier application, how can I simulate several TCP/IP errors for some reconnection code testing. What Windows-based tools should I use for this sort of testing? Thank you.

    ITKE344,705 pointsBadges:
  • Is there a way to reproduce a dropped TCP/IP connection?

    We currently have a situation where our Java program is establishing a long-running TCP/IP connection to our server and it's working fine (except for one thing in an environment that's outside our control). Every Saturday, that server is rebooted but it's not communicated properly with our client...

    ITKE344,705 pointsBadges:
  • AS/400 TCP/IP: Port numbers

    What are the different port (numbers) used by AS/400 for remote connection using HTTP connection.

    Naveens140 pointsBadges:
  • Networking: How to step through a TCP/IP stack

    I was a recent QA engineer that worked for a proprietary embedded operating system. My company built a ATN stack and I have to admit, the best moment I had there was stepping through it with a debugger (eye-opening network moment). Just watching each layer build their part of the packet was...

    ITKE344,705 pointsBadges:
  • Why is a TCP/IP reset RST flag being sent?

    Over the past several days, I can't seem to figure out why my application's TCP/IP connection is basically "hiccuping" every 10 minutes or so. After running Wireshark, I realized the other end is sending a packet with the reset RST flag set (after 10 minutes of inactivity). From what I've read,...

    ITKE344,705 pointsBadges:
  • How to code RAW Berkley sockets on TCP/IP?

    How does one create RAW Berkley sockets on TCP/IP? I’ve read a few tutorials, but all seem to be overwritten. I’m looking for the easiest and most straightforward way to do it.

    ITKE344,705 pointsBadges:
  • What layer of the TCP/IP would ARP and RARP belong to

    ARP translates Layer 3 addresses to Layer 2 addresses, and knowing fully well that it is not an IP-only or Ethernet-only protocol. Can anyone help with this, it's getting a bit confusing.

    Freshfall5 pointsBadges:
  • Windows 7 must restart print spooler every morning in order to print

    We are currently deploying Windows 7 64bit PCs within our organization. Some of the computers need to have their print spoolers restarted in the mornings or else they won't print. After the spooler has been restarted they seem to print fine. We deploy printers via Group Policy from Windows 2003 and...

    erin0201215 pointsBadges:
  • How can a general user trace the origin of TCP/IP data generated by persistent e-mail anomaly?

    Thank you very much for taking time to consider this question. What do you recommend for a general user who needs to trace the origin and route of TCP/IP data associated with an e-mail message? My SOHO computer is infected by some form of malware. The ISP's tech support could not resolve it; the...

    Troubleshoot201415 pointsBadges:
  • Testing stateful firewall with TCP/IPv6

    This may seem as a general question but I'm wondering how experienced users actually test "stateful firewall" with TCP/IPv6. I would include these two tests:Echo reply without requestTCP ack without synIs there anything else other than this? Especially that pertains to IPv6?

    ITKE344,705 pointsBadges:
  • Detecting / Reacting to DNS tunnels

    Lately, I've been seeing a lot of talk discussing TCP/IP over DNS requests (usually because port 53 UDP is open and unfiltered). What techniques are out there to detect and block such tunnels? Have you seen such tunneling on a network before?

    ITKE344,705 pointsBadges:
  • Sending a one-bit message through a Citrix session

    We have several programs that are running both locally / on a Citrix session. We need to send a one-bit message from the program, which is running locally, to the program running on the Citrix session.We've thought about these options: Utilizing TCP/IP Utilizing the shared clipboard to briefly send...

    ITKE344,705 pointsBadges:
  • AS/400 TCP/IP error

    Hi, while connecting to the AS/400 from my local system its throwing the error socket error function error CWBC01003 in AS/400. How can I be able to resolve the problems?

    Naveens140 pointsBadges:
  • TCP/IP in Windows Server

    IP of my Windows Server 2003 are not displaying in status.

    Winners10 pointsBadges:
  • Analysis and prevention of Flooding attack by using TCP/IP or UDP programs or any other software

    Hi, I'm doing my final year project on flooding attack. In this, I want to do analysis and then prevention of flooding attack with the parameters known as 1. Packet size 2. Rate of transmission 3. Bandwidth What do I do from this? Please help me.

    Classes10 pointsBadges:
  • TCP/IP

    I am getting this error on TCP/IP connection. Emails are not going out from AS/400 "2 = TCP connection closed due to R2 retry threshold being run."

    Msatbh85 pointsBadges:
  • Strange DNS resolution.

    Hello. This week one of our AS400 got me all surprised. I do not know what to do, where to look, so I would like to ask here...just in case. On this AS400, among others there are four host table entries. These entries are set to 2.xxx.xxx.xxx addresses. The DNS has 9.xxx.xxx.xxx addresses. Customer...

    Champs60 pointsBadges:

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