The tcpip tag has no wiki summary.
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1answer
20 views
My wifi only allow me to use http with proxy-auth, can I use other program which use other protocol?
My school offers students WiFi which only able to use browser or other program which use only http and support proxy-authentication with BASIC Auth. For other program such as windows live messenger, ...
0
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1answer
15 views
How configure OMRON (V750 RFID Reader) via browser-based interface?
I got a OMRON Reader, like this
http://www.plceasy.com/Catalog%20Online/pdf/auto_identification_systems/v750.pdf
I'm trying to access in browser 192.168.1.200, but had no success
I need to change ...
-2
votes
2answers
108 views
What layer of the TCP/IP network does ARP belong to? [closed]
I'm working my way through the Sams teach yourself TCP/IP book and it say's that the Address Resolution Protocol belongs at the Internet layer.
Is this true?
Other sources claim it is a Network ...
0
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4answers
70 views
If people transfer a lot of data on the local network can Internet connection become slow?
At my work there are at least 40 people sharing the same internet connection link over the same switch that is used both to internet access and local traffic of large file.
People here usually use ...
2
votes
1answer
59 views
Mac OS X TCP/IP fingerprint obfuscator
For several reasons, I need to either prevent my OS X machine from showing up as an OS X machine in TCP/IP fingerprinting, or make it show up as, say, a Linux machine. Is there an OS X program out ...
1
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1answer
26 views
Need to split up packets and rebuild again at destination
Cant go into too much details here for various reasons but here's what I've got.
I've a host which replies to a terminal with a receipt containing info of what items have been purchased at the ...
0
votes
1answer
32 views
Corrupted data from terminal to Host
Ive got a terminal which sends data to a host that is wrapped with <stx> and <etx>.
However when it enters the network it always has 5/6 bytes of junk data in place of the <stx> and ...
0
votes
1answer
94 views
Replace sensitive IP addresses in Wireshark with XXX.XXX.XXX.XXX
What would be an easy way to replace a sensitive IP address in a Wireshark packet capture with XXX.XXX.XXX.XXX? When I export the pcap in txt or csv I can no longer import it into Wireshark.
1
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1answer
42 views
How far a loopback packet sent from an application layer goes on TCP/P layers?
Assuming that I want to check if my ethernet card is working fine, if I send a ping from a cmd on Windows, how far the sent packet will go? I mean, the packet will fall down over all the TCP/IP layers ...
2
votes
1answer
120 views
How can I disable any TCP/IP port on a Windows 7 machine?
I need help on finding out how to disable any particular TCP/IP port on a Windows box whenever a need arises.
I googled before posting the question and I got links to articles mentioning only
...
2
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0answers
56 views
Mounting an NFS share with udp or mntudp options
According to the documentation of NFS client on Mac OS X 10.7 user can specify following options:
udp Use UDP transport protocol.
and
mntudp Force the mount protocol to use UDP transport, ...
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0answers
97 views
How to find out suspicious processes on iPhone that sends data via TCP/IP?
I have a problem with my iPhone but it relates to all unix-like devices. I ran a tcpdump for about two weeks and analysed it. When I filtered out all the irrelevant packets I found out that there are ...
0
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2answers
51 views
Tampering TCP data on a Windows application
Is there an application where I can run another application and it will allow me to see and more important manipulate the TCP data sent to another server?
I'm using Wireshark to view the data, but I ...
2
votes
3answers
262 views
Why was 169.254.x.x chosen as self-assigned IP? [closed]
Were there any particular reasons that 169.254.x.x was chosen as self-assigned IP? Its binary form doesn't look nearly as "whole number-ish" as other commonly used IPs like 127.0.0.1 or 192.168.0/1.1.
...
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2answers
136 views
How to get a Port to listen on Windows 7?
I have followed the step by step instruction to open a port on Windows 7, setting both Inbound Rules and Outbound Rules to following specification:
Protocal Type: TCP
Local Port: 55000
Remote Port: ...
0
votes
1answer
89 views
Open port in Window 7 for local client-server development and debugging
I am writing a C# console application for Windows 7 that can send and listen to packets (client or server). Since I only have one computer, I will have to debug and test my code locally.
I first ...
0
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1answer
71 views
Very slow hostname resolution in Windows XPe
Hopefully a simple question to answer.
I've built an XP Embedded image, and it takes from between 17 and 25 seconds for me to resolve to an IP when I ping google.com. Once it gets the IP address, ...
0
votes
1answer
319 views
Router/modem TG580v2 giving weird results
In my setup, I have the Thomson's TG580v2 router/modem, my PC connected to it via cable, and AppleTV, iPad and iPhone connected wirelessly.
First issue: AppleTV can't find my PC unless it is ...
1
vote
2answers
432 views
How to kill a particular tcp connection in windows?
On Linux we can kill an Established TCP Connection using tcpkill command.
For example, to drop all connection to/from a particular IP:
tcpkill host ipaddr
Or similary to kill all connection ...
0
votes
3answers
189 views
Uninstall TCP/IP Windows XP (uninstall is greyed out)
A laptop displays "aquiring network address" continuously for both wired and wireless network connections. TCP/IP is set to obtain an IP address automatically, and use an automatic DNS address. DHCP ...
2
votes
0answers
196 views
Assign IP address to a Virtual Printer
Is it possible to assign an IP to a virtual PDF Printer? Is there any Virtual printer software that automatically can do this?
1
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1answer
86 views
Windows 7 does not give a warning when subnet on a network with DHCP conflicts with one of the existing static subnets on another adapter
On the client-side, i have a loopback adapter at 192.168.1.1, with a 255.255.255.0 mask. I also have a wireless connection that does not work when the loopback adapter is enabled. Would it make ...
1
vote
3answers
120 views
Function of Routers as LAN?
Here's a quote from TCP/IP First Step - Book
Router's role is to figure out what to do with IP packets that it
receives. One thing routers can't generally do is function as a LAN.
They can ...
0
votes
2answers
94 views
How do I test the maximum TCP/IP transfer rates of my computer?
In Delphi, I am writing client software for open source message brokers, and would like the transfer rates with a realistic upper limit of what can be achieved on my local computer, or between my ...
2
votes
2answers
207 views
Is my ISP blocking the ports 5050 and 6060
I want to find out whether or not my ISP is blocking the ports 5050 and 6060 which I need for my voip software on my iPhone. I'm using a 3G stick with a prepaid plan, and I'm using the internet ...
-1
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2answers
147 views
Can't find wireless AP ip after changing router IP/LAN settings
I have a modem/router (Netgear dg834) and a wireless access point (Netgear wg602), the AP is directly connected to the router.
My old working configuration was:
router ip: 192.168.0.1
access point ...
0
votes
2answers
129 views
TCP Window Scale
I am searching that, how can two sides determine which scale factor will be using? In syn packets we can give a scale factor and than when two sides have the any scale factor, we can understand that ...
1
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1answer
191 views
Which free software can convert Serial to Ethernet?
I'm using Serial over Ethernet, but it's not free. Is there any free software that can do the same thing?
3
votes
1answer
75 views
Why is the DNS setting part of Windows TCP/IP setting dialog?
The DNS servers setting has been part of the Windows TCP/IP setting dialog since the earliest version of Windows as far as I can remember (Windows 95). However, a host may have multiple network ...
0
votes
1answer
77 views
Determining cause of TCP/IP connect issue
I need HTTPS access to the host ws.betaqxl.com, but connect fails:
:: curl -k -v https://ws.betaqxl.com
* About to connect() to ws.betaqxl.com port 443 (#0)
* Trying 91.204.81.183... Timed out
* ...
8
votes
2answers
329 views
On the Performance of TCP implementations of Linux and Windows
As I understand the implementation of TCP stack in windows and Linux are different. Windows uses a congestion control algorithm known as the TCP Reno while Linux uses Cubic.
How do the 2 protocols ...
2
votes
1answer
88 views
TCP Throughput testing tools with ability to rate-limit?
I'm looking for test software that can generate test streams with the TCP/IP protocol, but limit the rate of the test data. For example, if using 100Mbps Ethernet, I would like to be able to generate ...
3
votes
1answer
144 views
Where do I find the TCP/IP stack in Process Explorer on Windows 7?
I was wondering, if the TCP/IP stack is part of the kernel or running as a service? Where do I find the TCP/IP stack in sysinternals ProcExp?
5
votes
1answer
64 views
If a major telco line is cut to a region of the world, is the “Internet” still available for sites served from within that region?
Can the Internet work independently within various regions of the world or are there safeguards in place that take down portions of the Internet-network (yes, I see the redundancy) when a major telco ...
2
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0answers
78 views
TCP/IP optimization in XP and higher? [closed]
I heard TCP/IP settings were just optimized for 10/100 LAN. Would TCP/IP optimization for broadband like cable make any difference to performance?
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2answers
169 views
Three way handshake conundrum
I am attempting to understand the three way handshake however have difficuly understanding how this applies to a real-world
scenario. For example if I am using a web browser such as Mozilla Firefox ...
1
vote
1answer
161 views
Can't access HTTP server, but ping works in LAN
I encounter a problem when configure the connection. My computer resides in a LAN, I want to assign it a static IP address.
Thus with the help of port mapping on the router, I will be able to access ...
0
votes
1answer
86 views
Windows connection limit
Windows XP is said to have a connection limit. There are some patches that increase this limit to 100 or higher. I was just wondering if my download speed (from torrents, etc.) or number of ...
0
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1answer
37 views
LAN server emulator application
I am looking for a LAN server emulator application capable of doing the following:
Can connect to it from another application via TCP/IP
Can send some binary data to my applications
Of course I ...
1
vote
1answer
230 views
How TCP/IP works, step-by-step [closed]
In early days, I "googled" looking for a detailed guide/manual on How TCP/IP works; specially data flow; By example, What happens when I type "http://superuser.com" in web browser and it's receive ...
1
vote
1answer
52 views
TCP/IP Drivers for QNX 4.2
Does anyone have, or know where I can get my hands on TCP/IP Drivers for QNX 4.2
qnx.com wants ~ $400 for the drivers.. I'm hoping someone has written their own or knows of some good free ones.
0
votes
1answer
1k views
How to change TCP “time wait” delay in Windows 7 / 2008 Server?
Windows Server 2003 "offers two methods of controlling TIME-WAIT behavior."
The TcpTimedWaitDelay registry value under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters ...
0
votes
1answer
150 views
DatabasePath Registry Entry Not Working in Windows 7
I’ve set the HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DatabasePath registry entry in Windows XP and it works as expected; the system loads and uses the HOSTS file in the directory I’ve ...
0
votes
1answer
60 views
Opening multiple web links causes pages to 404 or timeout
I'm using chrome/firefox on windows 7, on fiber, at the office. When browsing the web and opening multiple concurrent pages some of them will 404, timeout, or hang. This doesn't seem to happen to ...
7
votes
5answers
1k views
Does Windows XP only allow 10 inbound TCP/IP connections at any one time?
I tried to connect 40 clients to a webservice that is on Windows XP and I get no connection.
Are the inbound TCP/IP connections on Windows XP limited to 10 at any one time?
3
votes
1answer
214 views
Detect changes to routing table or address resolution protocol on Windows 7
On two different Win7 PCs we're having a very specific problem where connecting a device which uses a RNDIS driver sometimes disrupts the PC's network adapter connection (we detect this because we ...
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0answers
61 views
How *NAT* was Implemented in Home Based Routers? [closed]
Different Types of Home-Based Routers Exist, and those routers provide NAT Feature as well e.g; and most of them are Port Restricted.
Q-1 : What kind of Base Softwares Manufactures use to develop NAT ...
0
votes
1answer
137 views
Random BSOD, even when the computer idles
I get a random BSOD, even when the computer idles.
Already tried:
memtest - ok
scandisk - ok
netsh int ip reset
Winsock fix.
tcpip.sys+2c13e 21.06.2011 15:21:00 DRIVER_IRQL_NOT_LESS_OR_EQUAL
...
2
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3answers
372 views
SQL Server Ports
The Microsoft website states
The firewall must be configured to permit port 1433 incoming (or the port numbers that SQL Server listens to on TCP/IP), and ports 1024 to 65535 outgoing.
Does this ...
1
vote
1answer
574 views
what is TCP Half Open Connection and TCP half closed connection
I am trying to understand what is the difference between TCP Half Open Connection and TCP Half closed connection can any one tell what exactly are they?
