Questions tagged [packet]

99 questions
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Set udp packet size limit

I have a CentOS server with a JAVA application that receive UDP data packets, it works all OK until the packet is bigger than 584 bytes, I read something about and seems to be a limit of UDP protocol. My bigger packet is 631 bytes length(payload) I…
E_Blue
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How do routers manage multiple data streams?

Routers manage data connections between the internet and computers or connections between computers on a LAN. It makes sense that when, for example, a computer requests music from Pandora, that packets containing music data from Pandora are routed…
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What happens when an unexpected packet arrives at a computer?

I have been wondering this for a few days. I basically understand how networks and packets work. But what happens when an unexpected packet arrives? Like, when I didn't send a request for a website's index, but it sends the index to my machine…
user156212
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Checking HTTP response for website using Wireshark

Is there a specific way to know if the file that we download through a web server (e.g.: Java) can be verified through Wireshark? I want to check if the file is working perfectly from internal and external site.
newbie.my
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What is signature in a packet payload?

What is a signature in a packet payload? Why are they even necessary ? Also traffic classifiers use signature to detect the type of protocol of packet like there are regular expressions for http signature and ftp signature.
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How many data packets does it take to log in to facebook?

I want to find out how many packets are sent when visiting a site on the web. What's a good program that would help me get this kind of data?
Jacksonkr
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Linux firewall packet handling

When a client communicates with a the server via HTTP, for example, there are many packets going in both directions. It means from the client to the server and vice versa. I would like to ask how exactly Linux firewall or iptables installed on the…
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iptables rules for blocking specific packets

Im using the following iptables rule: iptables -A INPUT -p tcp -m tcp --tcp-flags PSH,ACK PSH,ACK -m length --length 52 -m state --state ESTABLISHED -j DROP It does it's job for blocking the unwanted packet from my server , but it also blocks…
Adrian Nica
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How packet is transmitted over the network?

I am writing discrete event-driven simulator to measure time between sending datasets over network. If multiple processes sends n packets through network they (packets) will go one after one through link or they will simultaneously share network via…
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