• 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:
  • Don’t Fragment bit

    Could anybody please explain me about the data transfer when Don't fragment bit is set and incoming protocol is TCP/UDP?

    Techy001340 pointsBadges:
  • Free IT Book: Mastering the Hype Cycle from Gartner, Inc.

    According to Gartner's 2010 Hype Cycle Report, cloud computing has reached the peak of its hype cycle. This supposedly means that these technologies are heading toward the mainstream, but first is a period of disillusionment for those whose experience didn't match up with their expectations created...

    MelanieYarbrough6,345 pointsBadges:
  • (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53

    Problem: SQL SERVER is up and the instance connect is running. All required ports on Firewall is open/ also try to disable Firewall but no success. TCP/IP protocol is ENABLE.  SQL SERVER port is by Default 1433. Also try this: The problem is the Instance name from the client is not resolved, to do...

    Safekom33330 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...

    ITKE350,300 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?

    ITKE350,300 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.

    ITKE350,300 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...

    ITKE350,300 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...

    ITKE350,300 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,...

    ITKE350,300 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.

    ITKE350,300 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:
  • Choosing a default port for a TCP/IP application

    I’m developing an app that will listen in on a TCP/IP port. How do I choose the default port upon which it will listen? I hope to limit port conflicts when it is installed across our network.

    ITKE350,300 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?

    ITKE350,300 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?

    ITKE350,300 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...

    ITKE350,300 pointsBadges:
  • Protecting plain text password transmission in iSeries Access

    iSeries Access for Windows using TCP/IP connectivity applications such as telnet and ftp transmit data and passwords over the network in plain text. This means that the data and passwords can be intercepted and read by other users on the network. Looking for solution to solve this problem.

    AS400 - Ask the Expert485 pointsBadges:

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