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Questions tagged [tcpip]

TCP and IP are two important protocols used in networking today. Due to their importance, the Internet Protocol Suite is also commonly known as "TCP/IP"

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ASN number basics

I have the basic idea of ASN numbers. My question is how do routers know about them? It doesn't seem like it is signified by any bits in the datagram, so I assume it's done in the protocol. Once you are assigned an ASN how do your routers know what…
maxwebster
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What ports are least likely to be probed on the internet?

Suppose you've got a server that runs insecure software and you have to make it publicly accessible, what ports are "safest" for providing that service on the internet. By "safest" I mean least likely to be port-scanned and probed for…
Brian M. Hunt
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Need help routing Cisco network- IP routing

In the above network, can you help me configure routes so the computers on the left can see the computers on the right, and vice versa? I know the syntax of the command is ip route {network address} {subnet mask} {default gateway}, but for some…
Dave
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Is their an official tool to tweak Windows 2008 server TCP configurations?

We are running scripts that initiates numerous TCP connections and disconnects right away. It's just to test if the remote report is opened and responsive. But we are having random strange issues with our script so I'm suspecting that the windows…
Muhammad Gelbana
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netstat showing too many connections (Established)

Possible Duplicate: Too Many ESTABLISHED connection from a single IP address in Apache netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G…
LINUX4U
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2 answers

TCP and Ports Connection

Can more than 1 TCP connection be active at the same time between the two ports on two different host? Please answer.
kuchiku
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From TCP/IP network to IPX/SPX network?

Ok so can a computer from a TCP/IP network communicate with a computer from a IPX/SPX network? If so how will the routers handle the addressing scheme? And what if i wanna telnet that computer from the IPX/SPX network, should I use the IPX…
120dn3l
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How works tcp/ip package transport inside Linux OS?

How works tcp/ip package transport inside Linux OS?
d_pilot
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monitoring TCP/IP performance on Solaris

I am trying to tune a high message traffic system running on Solaris. The architecture is a large number (600) of clients which connect via TCP to a big Solaris server and then send/receive relatively small messages (.5 to 1K payload) at high…
Andy Faibishenko
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Getting the MAC address of a remote host? Linux, macOS, Linux

I am writing a custom application in Go. My app needs to work on Linux, macOS, and Windows 10+. I need to verify that a remote host is what I think it is. I've tried arping and as expected, it does not cross routers. Is there any other way to get a…
PrecisionPete
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Transport layer port and firewall

When a communication is initiate the OS chooses randomly a port number greater than 1023. As long as it does not conflict with other ports in use on the system at that moment. I wonder how the firewall knows about this port? Or a firewall rule…
ragnar
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Python sockets: TCP errors in linux, while same program works fine on Windows10

I'm trying to communicate with a commercial power supply device via TCP/IP using python sockets. I tried using both a virtual linux(centos8stream) and virtual windows10, both running at the same physical computer, on the same network interface. Both…
Cenkoloji
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SSH connection not established, but standard TCP/IP connection works

I'm working on a custom yocto Linux for a Raspberry PI 3 and try to get the WIFI connection working with SSH. However when trying to connect from my PC (Ubuntu 19.10, SSH OpenSSH_8.0p1 Ubuntu-6build1, OpenSSL 1.1.1c 28 May 2019) to the PI on which…
deets
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Is it actually possible to send some data to remote destination over tcp/ip without any socket?

I am studying socket concept. As far as I learned socket is like electrical socket that is created in both end of communicating devices (or processes). Socket can keep itself alive forever to listen some request (this is may be the key concept to…
Shamim
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What happens to a tcp packet when two access points for the Same SSID are on the same channel

Working on a C# Tcp server that is communicting with an embedded IOT device and I was having serious communication problems. Packets getting lost and or delayed. Not receiving ACK...ect It turns out the Network I was using has 3 access points…
nate_weldon
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