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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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What does the IP "192.168.1.1/24" indicate?

Possible Duplicate: Server Fault Wiki: How does Subnetting Work? I'm setting up rsync and I see this in the config file: hosts allow = 127.0.0.1 192.168.1.1/24 Does this indicate that all hosts on the local (192.168.1.*) can use rsync? It's been…
mmattax
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Rapidly changing public IP addresses on certain networks?

I run/develop an online game where many of our users are in southeast asia. I recently went to southeast asia and made an alarming discovery. Anywhere I got internet access, whether it was via 3G, a LAN in a hotel, or wifi in a cafe, both in…
DivideByHero
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How do I setup a TCP over DNS tunnel on Windows?

I've seen a few guides out there, but I could not get any of them to work. I can point NS records to my domain, so it sounds like I should be able to do this. I tried setting up a DMZ for the server portion, no luck at all.
esac
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How to make Windows honour an ICMP Connection Refused message after a TCP connection attempt

We have a tool which is used to manage a server process remotely over TCP. One of the tools features is to check if the server is running by attempting to connect to the server in a loop for a given period of time. When we used the tool to check…
liwp
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UNC Path fails by IP "no network provider accepted the given network path", but works using hostname

I have an unusual problem with a Windows Server 2003 (Standard x86) box. It appears the machine will not accept connections to its shares (locally and from other domain member servers) by using its ip address in a UNC path. The error returned is: …
BoyMars
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If I make a request to my server's IP address, will it be the same as using 127.0.0.1, or slower?

I have application servers with memcached running on them. What will happen if I make a request to memcached on 10.243.98.5, which just happens to be the originating server? Will it use the same fast-path tcp/ip stack as 127.0.0.1, or would I get…
Eloff
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Not all printers are deployed on the client using Group Policy

Situation in our environment we are using the following servers to deploy printers in our domain forest: Windows Small Business Server 2008: contains the group policy to deploy the printers Windows Standard FE Service Pack 2: file and print server…
Mivaweb
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So many retransmission over NSX enabled vDS of vSphere

I'm currently on test of VMware NSX network environment and met some trouble. My Environment is: Management Cluster with 3 Hosts and NSX components on 2 dedicated Hosts Compute Cluster with 2 Hosts Single 1Gbps Switch vSphere version 6.0 and NSX…
sio4
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Does a ping to 127.0.0.1 hit the network card? Which RFC / standard states that?

I recently did an exam where one of the questions stated that you can run ping 127.0.0.1 on a computer to verify if its network card is working. I have already read on multiple sources that this actually only guarantees that the networking software…
Schrute
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Using IP alias and route to visit a site through assigned IP address

I want to visit a site through assigned IP address. I run the following commands: ifconfig eth0:1 [ip address] route add -host [the target host ip] dev eth0:1 gw [gateway] This works fine on Ubuntu. But when I want to do the same on a Redhat AS4…
gleery
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When a server IP changes, do exising TCP (e.g. http/mysql) connections remain running

We have some PHP-FPM servers and when they need a database connection, they connect to an HAProxy server which selects them a database server to use and the connection opens. When we then want to perform some maintenance on the HAProxy servers (such…
Luke Cousins
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What else does "netsh int ip reset" do?

According to this KB article when you run the "netsh int ip reset" command, all it does is to reset the content of two registry keys: SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ SYSTEM\CurrentControlSet\Services\DHCP\Parameters\ but on my…
Chris
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How to globally limit total number of TCP connections with iptables?

I'm having quite a difficult time figuring out how to REJECT both inbound and outbound connections from a machine with iptables once the total number of TCP connections hits a global maximum without respect to source or destination port. All…
Gordon Morehouse
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How can I monitor the TCP/IP (or HTTP) traffic of a remote machine?

Are there any applications (preferably free) for windows OS using which I can monitor the TCP/IP traffic of a remote machine (in the same intranet)?
Hemant
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Which route when there are two physical connections?

I'm a developer, not an admin, so apologies in advance. In a small office I have two Windows Server 2008 boxes connected to a 100mbps router, which is fine for day to day running. I'm looking to migrate SQL server off one of the boxes onto the…
spender
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