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

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IP Failover - Configured, but disabled

I have multiple debian servers on which I configured "IP Failovers" or "Floating IPs". My floating IP is 10.0.0.2 and I have an A records: www.example.com pointing to this IP. I configured this ...
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1answer
236 views

What happens when I run dev server on 0.0.0.0? [closed]

When working on web-apps I'll usually run a development server on my local machine at localhost / 127.0.0.1, and if I need to show a colleague something I will check my ip address with shell command ...
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7answers
1k views

Best choice of private addresses for a “device area network”

I'm building an appliance consisting of several subdevices connected by ethernet inside the appliance. The appliance will connect to the customer network. The customer network can be using private ...
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1answer
75 views

Blocking an IP that is constantly accessing our website

Yesterday I noticed in our apache logs that there is someone constantly accessing our website, sometimes 5 times a second or so, and sometimes once in 5 seconds. However, it's happening 24 hours a day....
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1answer
528 views

Several logical IP subnets within single physical Ethernet broadcast domain? [closed]

I'm using Xubuntu 12.04 and Wireshark to analyse network traffic in my ISP subnet I'm wired to. My system has the following IP configuration: IP Address: 10.10.103.28 /24 Subnet Mask: 255.255.255.0 ...
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2answers
1k views

Two Secure Sub Domains - Two SSL Certs - One IIS server - Do I need new internal or external IP address

I am trying to figure out whether I need a new internal IP, external IP or both to configure an IIS 7.5 server to run with two secure sub domains each using a different SSL cert, with both domains ...
0
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2answers
176 views

How do proxy servers change their IPs? [closed]

A lot of proxy servers say that they change their outgoing IP addresses every X hours (many seem to do it twice daily). How they do this? Is it something that a hosting company would do, or an ISP?
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3answers
299 views

Prevent IP conflict from untrusted network machines

I maintain a small LAN (192.168.1.0/24) on which we have several untrusted machines, where the users of those machines have administrative rights or are able to connect their own machines to the ...
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2answers
89 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
439 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 ...
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1answer
40 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 ...
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1answer
3k 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 ...
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1answer
432 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 ...
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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 ...
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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 ...
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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
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0answers
298 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 ...
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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 ...
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1answer
636 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 ...
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2answers
206 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 ...
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1answer
167 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 done:...
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1answer
64 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. ...
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1answer
582 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 ...
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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 ...
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2answers
319 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 ...
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1answer
81 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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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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2answers
199 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
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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 ...
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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, ...
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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 ...
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1answer
963 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 ...
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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
207 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 ...
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1answer
638 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. ...
-1
votes
1answer
189 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
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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
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1answer
484 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
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1answer
913 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
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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
165 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 (1.4430s)...
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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 ...
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3answers
204 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
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1answer
107 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
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4answers
238 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
495 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
4k 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 ...