The network-protocols tag has no wiki summary.
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1answer
22 views
Can gnunet-0.8.1 (2 yrs old) be used and useful?
I've configured and started gnunet-0.8.1-alt1.M51.1 service on my system (the reason I use a more than 2 years old version is that the system is an old installation of ALTLinux 5.1, and I wanted to ...
0
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1answer
99 views
Why is my UDP so slow?
I'm using Iperf on two VMs and when using TCP I find the performance is as follows:
notroot@ubuntu:~$ iperf -s
------------------------------------------------------------
Server listening on ...
1
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0answers
94 views
tcp port numbers reused on wireshark
I used raw socket to build a tcp client program on machine A to reproduce tcp 3-way handshake with a simple regular tcp server on machine B
I captured packets on the client host and server host, and ...
0
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1answer
47 views
sent packet is different from received packet
I use raw socket to create TCP packets, with focus on the sequence number and TCP flags(SYN, ACK)
I used one machine S to send a tcp ACK packet (flag ACK is set to 1)
and another machine R to receive ...
13
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2answers
584 views
If two devices are emitting a wifi signal in the same frequency at the same time and reach an antenna at the same time, how can the data not overlap?
I mean, I know each packet is sent with a MAC address, but what about streaming?
What happen if while the router is receiving one packet, a packet from another device arrives?
How can the router ...
0
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1answer
117 views
Copying files over home network (windows 7 laptops) is super slow
I have two Windows 7 laptops (one Dell and other Toshiba). I have a shared folder on the toshiba-pc, and both are connected to a wireless router. When I copy a large folder from toshiba-pc to dell-pc, ...
1
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2answers
126 views
How does an adsl modem discover the network upon physical setup?
I have some basic knowledge about protocols and the OSI model, i know for example a good deal about how the HTTP works and how FTP works or the diferences between TCP and UDP, but I never studied much ...
4
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1answer
99 views
Is there a program that would make it easier to look at how network protocols work?
I'm interested to know more about how certain network protocols work (like SSH or FTP for example). Is there a program that can facilitate connecting to computers on the network and communicating with ...
2
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1answer
103 views
How do I figure out if my wireless network has WEP, WPA or WPA2 security via command prompt on Windows XP?
I understand how to check what security protocol my wireless network connection is currently using by going to the Wireless Network Connection window like in the following example
but how does one ...
0
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1answer
129 views
How to use specific proxy address for specific application in Windows XP?
I have a chat client application. When I connect to internet & chat with other person via that application, the application uses the IP of my ISP to connect to internet & transfers data via ...
2
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4answers
178 views
How do Internet (ISP/AS) routers send IP packets to each other
I know how computers in a LAN communicate with each other (all the Ethernet/MAC address/NAT etc stuff), but I wonder, how do Internet routers communicate? Are they connected into some kind of giant ...
2
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0answers
47 views
Most network protocols occasionally fail
My Windows 7/64 machine has suddenly started to act funny. Everything will be running fine, when suddenly most network access methods will fail. These things continue to work:
Accessing network ...
0
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1answer
98 views
Why does Knoppix mess up my internet connection?
I have this problem that when I boot Knoppix on my Windows box, it screws up the internet connection somehow, so Windows cannot get an IP when I reboot back to XP. I use Verizon FIOS. Normally I have ...
4
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2answers
136 views
What protocols did the ARPANET use?
The ARPANET is often mentioned as the Internet's precursor. But what protocols did it run with if not TCP/IP?
1
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1answer
156 views
Unknown Inbound UTP Packets
I need some help figuring out something. I was looking at my network traffic using Wireshark and I saw a bunch of inbound UTP (uTorrent Transport Protocol) packets to my IP. About 10 different IP's ...
2
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1answer
1k views
Chrome doesn’t handle custom protocols correctly
For example, if I enter steam://connect/127.0.0.1 in the Omnibox, it will search for the URL instead of launching the program that handles that protocol.
How can Chrome be configured to treat custom ...
1
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2answers
142 views
Why is there an interface field in routing table?
Imagine that we have an IP-packet, and we need to figure out which interface it should be sent through. There is an eth0 (for example) corresponding with our packet destination address.
But what if ...
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0answers
25 views
Shiffer software with custom protocol parsing ability on Windows?
Suppose I wish to sniff my network traffic with some conventional software, but the protocol I wish to analyze is custom. Which software allows to write plugins or something to parse custom protocol ...
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3answers
83 views
In which network layer is the data located that lets a gateway(using NAT) know which computer a packet is meant for?
Main questions:
In which network layer is the data located that lets a gateway(using NAT) know which computer a packet is meant for?
Could someone explain how the process works?
In explaining the ...
1
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3answers
115 views
Why do I not get to the same website when using this IPv4 address instead of the url?
When I capture packets using the packet analyser wireshark while visiting http://en.wikipedia.org/wiki/Hydrogen I can see packets that use the HTTP protocol (e.g.a GET request). My Get request uses 4 ...
1
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1answer
3k views
What does `Type: IP (0x0800)` in the Ethernet II part of a ping packet mean?
If I ping to another pc in my network I send a packet that consists out of an ICMP part, a IPv4 part and a Ethernet II part. I can see this using the packet analyser 'wireshark'.
Now the Ethernet II ...
0
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1answer
233 views
Can two network adapters work in different IP protocols simultaneously？
My laptop has two network adapters, one is wireless and connected wirelessly to a wireless router, another one is wired and connected to a network supported IPv6 with cable.
The question is , can I ...
0
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1answer
48 views
Implementation of protocols [closed]
I want to know how different protocols are implemented. For instance, take example of TCP/IP. This protocol is used for the transmission of data (if I am right).
Now, I want to know how this protocol ...
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4answers
7k views
How do I limit packet capturing in Wireshark to only a specific protocol?
I would like to listen to HTTP traffic on port 8080. When I start capturing packets in Wireshark, it's flooded by packets using the SSDP protocol on port 1900. I would like to limit the packet ...
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2answers
242 views
Ethernet a protocol or cable?
Is ethernet a protocol or cable? How it is different from Cat-5 cables? I'm very confused when I hear the term 'ethernet' for a protocol and cables.
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2answers
11k views
How to download and install IPX on windows 7
From where I can download IPX for windows 7 and how to install it?
Thanks alot for your help.
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2answers
37 views
Sharing internet connection.- Complex
Scenario
1 Desktop , 2 Laptops , one wifi router , one network cable . All computers are on win XP
Laptop A and Laptop B are connect to the network of wifi Router, they can access internet.
My ...
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2answers
200 views
What is `gopher` and is it still used?
Reading some rather old computer books, I have seen the gopher protocol mentioned frequently.
What is it used for? And, is it still used today?
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2answers
444 views
What are ports and protocols really?
I hear people talk about ports and protocols (in relation to computer networking), and they often provide analogies for them (for example: "a port is much like a shipping port, it sends and receives ...
1
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0answers
121 views
Allow only HTTP/HTTPS comunication with Agitum Outpost Security Suite Free
Hi I use Agitum Outpost Security Suite Free and I would like allow only HTTP(80) a HTTPS(443) protocols for IN/OUT and also allow local ports for Oracle database, etc.
I try use Network Rules -> ...
0
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1answer
89 views
IPv4 address to Netmask mapping and Multiple default routes feasibility?
We have,
Class Range NetMask Bits Bits hosts#
----------------------------------------------------------
A 0-127 255.0.0.0 8 24 16777216 (i.e. ...
7
votes
4answers
449 views
Is there a good example for acknowledged, connectionless network protocol?
According to what I've read, there are three main connection types in computer networks:
Unacknowledged, connectionless (e.g. UDP)
Acknowledged, connectionless (e.g. ?)
Acknowledged, ...
2
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2answers
202 views
CSMA/CD network protocol (Ethernet)
I hope I'm in the right stackexchange subsite (can't seem to find a networking related subsite..).
I've got 2 questions concerning the CSMA/CD network protocol:
Before sending some (say 5) messages ...
1
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3answers
191 views
How do I forward TCP from one IP to another?
Here's a thing: I have a piece of software listening on 127.0.0.1:port and only (I can choose the port). I want it to work as a server and accept connections from outer network. How can I forward the ...
6
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4answers
11k views
how does 'ping' command really work?
How does the ping command really work? Specifically where does the ARP (Address Resolution Protocol) come into picture?
I was asked this question in an interview and I was not able to come up with ...
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3answers
3k views
How do I “telnet into [my] favourite Web server”?
I'm reading a book about programming, and I want to check an HTTP response message. The book is instructing me
to telnet into your favorite Web server. Then type in a one-line request message for ...
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3answers
2k views
Finding the external (PPPoE, WAN) MAC address of an ADSL router
My ISP is Orange Internet, I have recently ditched my crummy "livebox" and moved to a more stable BT Business Hub with the firmware flashed back to the original SingTel ROM. The thing works great ...
14
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4answers
3k views
Ethernet vs TCP vs IP?
What is the difference between Ethernet, TCP, and IP in simple (simple abstract) terms?
Please do not copy from Wikipedia...
0
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3answers
59 views
How does the home wireless perform if it connects to a public access point?
Assuming that there is a access point(hotspot) covering a dozen of houses. Besides, these houses also have their own wireless network. So, if everyone in each house connect to the Internet at the same ...
0
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1answer
119 views
http in web browser address bar
If we type a domain name in a web browser address bar, how will it discover the correct protocol for that domain ?
Example:
If we type linkedin.com in a web browser address bar, how does it know to ...
