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Questions tagged [ip]

IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.

IP (Internet Protocol) is a protocol which encapsulates data for transit across the Internet and encodes its source and destination addresses, among other parameters. It implements the network layer (layer 3) of the OSI model.

Questions related to IP (addressing, routing, and protocol issues) fall under this tag; questions merely containing an IP address do not.

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ip netns exec permission denied

I have a php script, say file.php that contains: If I run file.php via the command line, as root, it works. However, when I run it via apache, www-data doesn't have the permissions to use ip netns exec,…
Bryan Lemon
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Default Gateway in a VLAN

Could I have a router/firewall device providing WAN connectivity, part of a VLAN on a switch? For example: 2, L3 Switches. 2 VLANs DefaultVLAN 10.1.1.0/24 VLAN100 192.168.1.0/24 Two Internet lines - irrelevant what they are. Both controlled…
PnP
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How do I (Can I) expand scope in DHCP server to use all available IPs

DHCP server: Server 2008 R2 IP info: 192.168.0.1/22 Subnet: 255.255.252.0 Gateway: 192.168.1.1 According to every calculator out there, 192.168.0.1/22 means I should be able to assign between 192.168.0.1 through 192.168.3.254 as I see fit.…
music2myear
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forward a specific port from linux server (ubuntu) through firewall server (ubuntu)

I'm doing the following: % autossh -i YYY.pem XXX@SERVER -N -R 90:localhost:9000 -o ServerAliveInterval=30 to forward a server port from the local machine to the public machine. But connections are originating from 127.0.0.1 on the local machine…
iamacomputer
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OpenIndiana Static IP

I've installed OpenIndiana 151a7 twice now. Configured a static ip using the following instructions: svcadm disable svc:/network/physical:nwam svcadm enable svc:/network/physical:default cp /etc/nsswitch.dns…
David Vasandani
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Server thinks a request is coming from my gateway

I've been trying to get a server up and running to deploy my cloud service. Most of my operations are client ip based. When I was using godaddy, the script that returned the client's ip worked fine (php, $_SERVER variable). Now on my server, it's…
Osmium USA
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CentOS network configuration doesn't work as expected

Maybe I'm doing a rookies mistake but I can't find out what I'm doing wrong. On a Centos Box, I want to put static ip on my server so edited /etc/sysconf/network-scripts/ifcfg-eth0 as follow: # Intel Corporation 82579V Gigabit Network…
Luis M. Valenzuela
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Setting up IP masquerading by passing packets through external nodes

I'm trying to find a solution to prevent remote machines determining the source IP of my webserver. This is to hide the webserver's actual IP, helping avoid DDoS attacks. Incoming requests are already on an HTTP proxy so the IP is not visible for…
Mr. Hedgehog
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Best way to calculate optimal subnet masks for a range of IP addresses?

I thought I saw a tool like this once upon a time, but can't find it anymore... Anyone know a tool that would take a free range of IP addresses (as in start / end) and calculate a set of submasks that match the given range exactly? I'm specifically…
Salieri
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Is it possible to automatically block too frequently accessing IP addresses?

One IP address was accessing my site too frequently to be a real user, it was accessing so much that it caused site to slow down. Is there any application that can automatically block IP, if it is accessing too frequently to my site? My server is…
newbie
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My Plesk domain is pointing to the wrong IP address

I changed the IP Address of a domain hosted on a Plesk server and, after a couple of hours, everything seemed to point to the right place and the site was loading fine. When I woke up this morning, however, things seem to be pointing back to the…
binaryorganic
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routing back to LAN from RV082

We have an RV082 Linksys/Cisco router with a normal configuration of the WAN port connected to the internet, and the LAN port configured as 192.168.188.1. This might be a simple question, but I have never tried it before. We are going to connect…
charnley
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IP Address Subnet

Possible Duplicate: How does IPv4 Subnetting Work? We currently have a: 192.168.3.0/24 Subnet. We are looking to make this subnet larger as we need about 500 IP addresses in the above range. How should we do this?
Adam Chetnik
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IPv4 as default IP in dual stack

I am having an issue in prioritizing my IP network in Windows 8 to use IPv4 as default. Currently when ever I browser IP detection sites, they show me IPv6 address. How do I change this behavior?? Any help would be appreciated. Thanks in advance.
Azfar Niaz
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Non-accessible sites/IPs

Lately I've found that some sites and IP addresses aren't accessible. Some include forums and games website and even some commercial products that aren't related to each other or any malicious activities. I used tracreroute/ping from router and PC…
VirusEcks
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