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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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backup static route on linux router

How do I set up a backup static route on a linux router. For example if I have 2 routers R1 and R2, connected through a switch, through two links: R1(eth1)->switch->R2(eth1) R1 (eth2)->switch->R2(eth2) Behind router R2 is a LAN(LAN A) How do I…
biggdman
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Provide access through single IP

I've assigned a dedicated IP on my server to one of my customer via Plesk. But when he accesses any external content the IP reflected there as Host IP is the primary one of my server and not the dedicated one that is assigned to him. What could be…
user1075213
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IP conflict with IP address somehow in use by Linksys WRVS4400N

Windows is notifying me that there is an IP conflict with the address 192.168.1.2 (the IP of my domain controller), with a device with hardware address corresponding to my Linksys WRVS4400N v1.1 wireless-n router. This device's LAN IP is…
ndespres
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ICMP destination unreachable

I am working on an arch linux machine with ethernet interface eth1. I have created interface eth1:0 using ifconfig and given it a dummy hw address (00:01:02:03:04:05). When I send a UDP packet to a server application running on a remote server…
John Qualis
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Understanding the netstat command output

I used netstat command recently, and the output is below. netstat -a proto local address foreign address state tcp 127.0.0.1:1107 avinash-pc:0 listening tcp 0.0.0.0:134 avinash-pc:0 …
AvinashK
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port redirection through a VPN

I would like redirect my tcp traffic to IRC throught a VPN. I mark the packets with iptables and create a new route for this packets: echo 1 > /proc/sys/net/ipv4/ip_forward echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter echo 0 >…
Sanpi
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More than 8 WAN aliases on routers?

We have a Draytek Vigor 2820 in our office and we have a few servers running websites and email applications. These servers each have their own public ip using WAN aliases that are mapped to their local IP. I am looking to extend our IP block (from…
dannymcc
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How does hostname relate to IP address on a server with multiple public IPs?

My hosting provider set up an Ubuntu-based virtual private server for me with three public IPs. I want to assign hostnames to those IPs as follows (I'm be using Dyn as my DNS): example.com -> IP_1 www.example.com -> IP_1 test.example.com ->…
Chris Betti
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Do I need to restart Apache after updating .conf file?

I am going to be making a change in my apache2.conf file, do I need to restart the server in order for these changes to take effect? Specifically, I'm changing %h to %{X-Forwarded-For}i From: LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O…
Mr RSX Mr RSX
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Is it safe to call ip address add from more than one process at the same time?

I have a service which binds many NBD servers to a network interface at startup, each with their own IPv6 address. In order to do this, the addresses first need to be added to the correct interface. At the moment, this is done serially, with one…
regularfry
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Where to find/buy full list of updated ISP IP ranges?

I need to assign IPs of a huge daily visitor IPs to the ISP they come from. So I thought of buying the list of IP addresses corresponding to ISPs. Now so far I have only found: ip2country But I am not sure how legit they are and dont want to get a…
Max
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How do I change the IP Location in whois lookup?

I have seen many websites change the IP Location under "Server Stats" in whois lookup like this link http://whois.domaintools.com/kbeezie.com and wouldlike to know how I can do the same. What do I need to do to achieve this? What do I need? The IP…
grant tailor
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TCP/IP- what is it exactly?

I know that this question sounds stupid, but over all these years, I still have difficulty explaining TCP/IP to people. I don't completely get it myself, and even after reading up on it, the distinction is not very clear. What I get so far is that…
OckhamsRazor
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5 IP Addresses on a multi-homed NIC, 4 ping-able, what's wrong with the 5th?

Dell Server, broadcom NIC, 5 IP addresses all on the same subnet. Let's say 100.100.63.67-71. Windows Server 2003. From another system on the 100.100.63.* subnet, I can ping all IP addresses no problem. From a system on another subnet, say…
Chad
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Windows Server 2008 R2, IP Failover with 1 server and 2 isp's

I have a Windows Server machine that I have 2 nic's that are connected to 2 different isp's. Our DNS is hosted externally. What I am trying to do is set it up where when one isp goes down the 2nd isp will take over. I am pretty sure that round robin…
Shaun
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