IP address is a numerical label assigned to each device participating in a computer network that uses IP for communication.

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2answers
88 views

Moving site to another server - inconsistent results between browsers on same computer

I've just moved a site from one server to another. Both servers are under the same Media Temple account - so the nameservers haven't changed, just the IP address. To help verify the move has taken ...
-1
votes
1answer
404 views

Enterprise DHCP server solution? [closed]

I have a network of about 1000 assorted devices, all of witch are running by static IP addressing. Given the size of the network and the lapse of technical advice, the addressing scheme is in chaos ...
0
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1answer
39 views

DNS cname TYPE and IP address

assume a website is aliased. for instance www.sunnyweather.com is the alias and CNAME is xyzverycomplex.sunnyweather.com. After you query and get the CNAME you then need to query the A Type for the ...
0
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1answer
2k views

Redirect specific IP using htaccess [duplicate]

I am trying to figure out if it is possible to do a 301 redirect for a particular IP address (in this case brute force password bot). I want to send this guy to a project honeypot link rather than ...
1
vote
1answer
416 views

Access web service from external network

I'm trying to deploy a web service (wsdl) on a machine running Ubuntu 12.04 and access it service via external network, i.e. the internet. At first, I tested with apache2 by starting it and accessing ...
0
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2answers
82 views

Finding IP address of an FTP account before DNS is updated

Ive gone through serverfault.com for various similar questions, but couldnt find the relevant one. I am at sixes and sevens with regards to server relate stuff. So my client have a vps and already ...
0
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2answers
1k views

Apache reverse proxy forwarding different source IP ranges to different destination URLs

There's probably an existing question (or guide somewhere on the web) about this, but I couldn't find it. We want to slowly migrate our user base from one implementation of the back end server to a ...
-2
votes
1answer
109 views

On my Amazon EC2 instance for a school project. I tracked visitor IPs and within 5 minutes an IP linked to cnn-noc.net (Huawei/China Netcom) appeared [closed]

I'm not sure if there are any rules here regarding posting specific IP addresses so I will take the address down if necessary. As aforementioned, I put up an IP tracker on my Amazon EC2 instance for ...
2
votes
0answers
293 views

Is it possible to configure a CDN so that it will step out of the way for a subset of regional IPs?

We have a website which targets customers in China, both expat and local Chinese. We have an ICP license which allows us to host in a datacenter inside China. Internet in China is actually as fast as ...
-4
votes
1answer
2k views

NAT mode virtual machines shows same IP address [duplicate]

I have two virtual machine running on a virtual box. VM 1 and VM 2 The network is in the NAT mode (default). Both the machines have the same IP address.So I assume that they are in two different ...
-1
votes
1answer
594 views

Using DHCP on virtual servers (ESXI) [closed]

I am setting up a small lab with 5 virtual servers running on VMware ESXi 5. The servers are: Network Services server (CentOS 6.4) LAMP server (CentOS 6.4) File server (CentOS 6.4) Zimbra mail ...
0
votes
2answers
204 views

Wireless Clients unable to connect to internet

Our small office network consists of 2 windows 2008 servers, and 14 workstations (8 running windows 7 and 6 running windows xp) and 1 router(wired/wireless). The main server has DHCP, DNS, Active ...
1
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1answer
165 views

Host not showing in ARP even after broadcast

serverfault community. What I would like: to determine the current IP of a host (a networked camera to be specific) What I have: its MAC, its previously documented hostname and IP What I have ...
0
votes
1answer
63 views

Move single ip address accross network or virtual machines

I'm currently trying to set up a small development cluster inside our enterprise network. We have a system to provision "disposable" virtual machines and move them to any of our 12 servers if needed. ...
0
votes
1answer
564 views

Can't obtain ip-addres from my DHCP server

I can't obtain a ip-addres from my dhcp-server and it's going trough a firewall (pfsense), The firewall(pfsense) and DHCP server are two virtual machines on my physical server(ESXI). As rules i use ...
0
votes
3answers
3k views

Identify the computer owning an IP address whose DNS record is 'borrowed' from an old computer

I am in the process of clearing out old computer accounts from an Active Directory domain that I inherited responsibility for. In this environment stale records are not removed from DNS so there are ...
0
votes
2answers
316 views

windows server 2008 dns and optaining static ip addresses

In our office we are using windows server 2008 as domain server. There are about 40 machines. I would like to change my PC network settings from "Obtain Ip address automatically" to specific ip ...
1
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1answer
80 views

with windows remote desktop is it worth turning off TLS to block by IP address?

I have been assessing this software for securing our cloud server's RDP connection. The problem is, it requires you to use RDP encryption, without TLS. This is because with TLS the IP addresses are ...
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votes
1answer
1k views

Strange way to configure IP on Server with Hyper-V. We're doing something wrong?

Scenario (real with address/names altered): Windows Server 2008 R2 with Hyper-V installed. Originally, there were 2 machines let's call them FileServer and MainServer. The FileServer does a little ...
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votes
2answers
196 views

How to connect two wireless routers by powerlines [closed]

To extend the wireless range I bought a pair of powerlines. So one of them is connected to the main wireless router which is provided by ISP company. And the other side of the powerline is connected ...
0
votes
1answer
56 views

Can a router connect an IP network on one interface, and use one of the network's IP on the interface to the internet?

This is part of a question from a networking class. A router has IP 202.55.0.5 on the local network 202.55.0.0/21(through eth0), and uses IP address 202.55.0.6 to communicate with the internet ...
1
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2answers
1k views

One hostname and two servers in different countries

I have a site, let it be www.site.com/ (ASP NET MVC, but that's doesn't really matter) I have another site, let it be www.secondsite.vi/ (it hosts in Vietnam). The structure of the sites is the same, ...
0
votes
2answers
2k views

Interface IP address is removed automatically on CentOs running inside VirtualBox

I have CentOS 6.4 on which i am running virtual box. Inside virtualBox i have CentOS based VM which works perfectly fine. The NAT and HostOnly interface have assinged IP Addresses through DHCP and ...
0
votes
1answer
907 views

How do I change the source address of a tcp packet?

Is it possible to change the source address of any TCP packet ? I am aware of the fact that I will not receive those packets if I change the address, I only need to place a request on the server. How ...
7
votes
5answers
10k views

Making iptables easier to maintain

My network is completely locked down except for a few sites which are whitelisted. This is all done through iptables, which looks something like this: # Allow traffic to google.com iptables -A ...
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votes
1answer
204 views

Subnetting 2 subnets, 127 hosts on /24 class b network [duplicate]

I have an upcoming exam in networks communication. One of the available tasks for training on subnetting is the following: Suppose you are an ISP with a 132.1.32.0/24 address block. If 2 ...
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3answers
1k views

IPTables add an IP to IPSet list

How to correctly add an IP address to ipset from an iptables rule? Or isn't that possible at all? This rule doesn't work for me: -A INPUT -m recent --name IP_LIST --set Type of IP_LIST is hash:net ...
0
votes
1answer
615 views

how to connect to a server by name instead of IP address?

I'm trying to make it easier for users in a small office network environment to connect to an office server running Windows Server 2003. Currently, users map network drives using \IP_ADDRESS\DRIVE. ...
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votes
1answer
184 views

a special case about subnet mask calculation [duplicate]

I have an IP addresses 192.168.2.0 and a subnet 192.168.1.0/10 And I have two questions. (1) Is 192.168.1.0/10 legal? As the 9th least significant bit is not 0. And if (1) is true, does 192.168.2.0 ...
9
votes
2answers
4k views

How do I move static IP address from one ISP to another

We have a linux server pointing to a static IP address from one major ISP. We recently changed that ISP to a new ISP and I am wondering if there is a way we can move the static IP address to work ...
0
votes
1answer
460 views

How to add a new range of IPs to a server on a private VLAN & one NIC?

I'd like to add some more IPs to my single ESXi server that I have through a hosting provider. When the server was set it up, I was given a /29 and was left with five IPs to use. But, there's ...
0
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1answer
128 views

Reverse-resolved address ending with .bng?

I routinely check netstat --tcp when ssh'ed into my server, but today found an odd hyphenated address format that I haven't seen before: Proto Recv Sent Local Address Foreign Address ...
0
votes
1answer
887 views

Virtual pfSense Appliance on VMWare Host

I am having some issues setting up the WAN side of pfSense. I have ordered a dedicated box through a hosting service with ESXi loaded on it. Along with that I have 3 public IP addresses that will ...
1
vote
1answer
2k views

Why can't I associate a private EC2 IP with an Elastic IP from VPC

I have three entries in my /etc/network/interfaces with eth0:0... eth0:1... eth0:2... and the ips 10.0.0.210 10.0.0.211 10.0.0.212 ...they're all working fine. So I added a new entry, eth0:3, ...
1
vote
3answers
2k views

Hostname vs IP address to refer to servers in Windows domain environment

I've always preferred to use hostname for things like network shares, SQL Server instances, etc. I usually find hostnames to be more descriptive and easier to remember. However, recently one of our ...
0
votes
1answer
161 views

NAT and find inside global address

To try to find the inside local address of a host, on a LAN with 1 Cisco wireless router, I run nping on one Windows7 host 192.168.1.138. C:\>nping --ec "public" -c 1 echo.nmap.org SENT ...
0
votes
1answer
68 views

Ubuntu IP Redirect [closed]

This is my problem. I have a Ubuntu computer running Apache/SQL/phpMyAdmin the goal that I want is that when someone logs on to the network if they type in encc in the url bar it will direct them to ...
-1
votes
3answers
175 views

Is it possible to replace A records with CNAMEs in a zone file? [closed]

I've read that some people are able to successfully replace their A records with CNAMEs only. Primarily because the IP address of the A record is not static. Are they using a service like DynDNS or ...
0
votes
1answer
105 views

Moving from mod_rewrite/muliple ports on one IP to just multiple IPs

We have one server and want to run multiple versions of our in-house intranet app and have them be accessible through a web browser by their name, without a port number. This is our current setup: In ...
0
votes
4answers
237 views

Setting an IP address per website on a single Linux server?

I'm trying to get two websites on the same server to use different IP addresses. I've set up a virtual IP and set up the the virtual host. I restarted the network after adding the interface, and ...
0
votes
1answer
489 views

Running IIS and Confluence both on port 80 (multiple IP addresses)

I'm running Windows Server 2008 with IIS and Confluence. The server has two ip addresses setup at Network Settings. Confluence is setup to use the second IP address. Both IIS and Confluence seem to ...
4
votes
3answers
3k views

Where can I find a list of IP addresses of hosting providers?

I am attempting to fend off a spam attack against a web api I run and would like to obtain a list of IP addresses of public web hosting providers from which spammers are launching their attacks. I'm ...
3
votes
3answers
597 views

What's the formal definition of the magic number of a network? [closed]

I know what the magic number of a network is. I know how to compute it - 2 ^ ((32 - n) % 8). I know what it's used for and how to use it. I don't how how to define it formally. In a recent interview ...
-2
votes
2answers
547 views

What does IP Address quadrants reperesent? [closed]

If a IP address is 192.168.112.28 what does each quadrant represent in this IP address?
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votes
1answer
186 views

How do i set public ip address for office? [closed]

My assignment has this thing. Im given with the public ip address of 203.220.72.0/24. This is public ip address for router.The office got 20 hots and I need to give public ip address to those hosts, ...
1
vote
1answer
570 views

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 ...
0
votes
1answer
288 views

nslookup and host(linux) shows 2 ip's for some computers but not all

First off I will mention that I am a software engineer not an IT guy, so please bare with me. My company has an ftp server. Outside of our network, it works fine. Inside of our local network some ...
0
votes
1answer
439 views

Can a machine(physical or virtual) accept and process UDP packets with a different IP address coming from a known device?

Before everything, thanks for reading the next question. I have script,(ipUDPspoof.rb), which is a client/server script in Ruby (you choose the parameter 1 to be server and 0 to be client, at ...
0
votes
4answers
6k views

Postfix: Allow SMTP AUTH only from specified IP address ranges

can one implement an IP address based restriction for SMTP AUTH in Postfix? Scenario: I'm running a Postfix mail server that receives mails from all over the Internet. But the server doesn't only ...
0
votes
1answer
142 views

One-liner to retrieve external IP address [duplicate]

Possible Duplicate: Finding the Public IP address in a shell script For use in scripting, it would be handy to be able to do this: IP=`....something ....` echo ...$IP... >> ...