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

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0answers
14 views

Actual Public IP different from Public IP shown on ip lookup [migrated]

When I test my connection on services such as whatsmyip.com, I get 112.134.xx.xx as my public address. When I check the ADSL connection status on my router, it shows a totally different IP address ...
-1
votes
1answer
37 views

Can 192.168.20.4/24 describe a network or only a host? [duplicate]

As I understand it IP 192.168.20.4/24 can only describe a host (24) on net 192.168.20.[1-254]. Now when describing a net; can 192.168.20.4/24 be a valid network ID, or should such a network ID always ...
-1
votes
2answers
53 views

Do mobile devices have unique IP addresses? [closed]

I have a REST web service that contains a method for sending SMS messages, I would like to ensure that this functionality can only be executed every 10 seconds by any given user. Do mobile devices ...
1
vote
1answer
48 views

Apache Server: IP Address Routes to Domain Instead of DocumentRoot

I have only one website in my server. My desire is to open different directory when the IP address is used as the URL in web browser. However, even though I set the DocumentRoot to a different ...
-1
votes
1answer
47 views

Is it Possible to Capture All HTTP Packets to a Target IP on a subnet?

I've been trying to use tcpdump to capture packets to a target IP on my subnet, but am unable to do so successfully. I've tried: tcpdump -i eth0 net network-ip-address/27 -A and tcp port 80 But it ...
0
votes
1answer
24 views

Switching network from netmask 24 to 22

I currently have a firewall set up as x.x.1.1 and a secondary of x.x.2.1 on the firewall. On the DHCP server I have a superscope with 2 scopes handing out DHCP addresses. I was told it would be best ...
-4
votes
1answer
45 views

multiple domains, one static IP address and latency [closed]

how is latency affected when multiple domains are using one single static IP address ? The scenario is in shared web-hosting By latency meaning the DNS lookup the client has to do. As far as I ...
3
votes
1answer
172 views

Caching DNS server returns invalid ip address for external lookups

I'm trying to resolve a DNS issue and am running short of ideas. Google doesn't seem to be helping, either. When I use my local caching name server to resolve external host names, it always returns ...
0
votes
0answers
28 views

Issue with Network IP Binding

Trying to bind a /29 (my possession, not the ISP or data center). It's routed at my core switch fine. interface Vlan70 description SERVER070 ip address xxx.xxx.42.45 255.255.255.248 Content of: ...
0
votes
2answers
237 views

How do I check for a specific IP Address, and then change it if it does not exist?

I am trying to test for a specific IP Address and then change it if it is not there in Powershell. I am not sure what is wrong with my code: if($wmi.ipaddress -ne "10.0.0.15") {$wmi = Get-WmiObject ...
0
votes
2answers
475 views

adding 2nd private IP on AWS EC2 instance

I am having problems adding a 2nd IP on AWS EC2 instance. I am running Ubuntu 14.04. I already tried this: a) Right clicked the instance and added a 'private IP' from the manage Private IP. b) ...
-1
votes
1answer
110 views

URL not shows specific Host name after uploading ASP project on IIS [closed]

![I have uploaded my ASP project on IIS server with 808 port, and when I try to open webpage by IIS server' Domain name (xx.xxxxxxxx.com) at that time it shows domain name in URL, but when try to open ...
4
votes
6answers
704 views

I have a Cisco Catalyst 2940 and want to connect to it via the network. How to find its IP address?

Since my computer has not serial port, the serial cable is of no help. Does the Catalyst 2940 acquire an address via DHCP? At least my DHCP server doesn't show any address which has been requested ...
0
votes
1answer
42 views

Restricting access using IP address / Network Redirection?

I have a situation where we have a web server (lets call it A) that is hosting a set of HTTP based services. Due to some client requirements, this web server is not open to the outside world but ...
0
votes
0answers
96 views

vServer: Configuring single (/128) assigned IPv6 addresses for use as IP address pool for IPSEC (Strongswan) road warriors

I've a new (dev) vServer up and running. Unfortunately the provider only hands out single IPv6 addresses (not even /64 subnets). Now I am a bit confused how to achieve the following: I want to use ...
1
vote
1answer
767 views

Google IP Address Ranges for incoming SMTP

Essentially I'm answering my own question here, but want to provide this info to anyone else who might need it. I need all the valid IP address ranges for Google Apps mail servers. I'm configuring a ...
1
vote
1answer
90 views

Static DHCP binding

Good time of day, SF people. I have created a manual DHCP binding entry on a Cisco router so that a client would always get leased to it. The clients wants to get the same address on both of his ...
0
votes
2answers
79 views

Can I direct users to a virtual host on a server by the server's main IP address when their DNS fails to resolve the hostname?

Problem: Some individuals' ISPs occasionally can't resolve one of my virtual hosts on a LAMP installation. Ubuntu 10.04 LTS, Apache 2. I'm looking for hack that can do it by IP. Background: On this ...
1
vote
1answer
138 views

configure single /32 ip address to FreeBSD server

Our upstream provider assigned us a single /32 ip address. How can we configure our FreeBSd server to use it? So far we have this in /etc/rc.conf: ifconfig_em0="inet a.b.c.d/32 netmask ...
0
votes
1answer
359 views

FreeRADIUS w/ MySQL backend. IP Pool

I have a pool of addresses (172.16.0.0/24) configured on my NAS (Cisco 2921 router) for my IPsec clients. I have various subnet mask length subnetworks used for different user groups. For example I ...
4
votes
3answers
308 views

In Linux, how can I automatically assign an IPv6 address to an interface based upon its IPv4 address at boot time?

On a CentOS 6 machine, I have a server with 2 NICs, eth0 and eth1. eth0 has address 192.168.0.1. I would like to create a script that parses the IP address of eth0 and assigns a similar-looking IPv6 ...
3
votes
3answers
5k views

Block range of IP Addresses

I am getting bombarded with attempted hacks from China all with similar IPs. How would I block the IP range with something like 116.10.191.* etc. I am running Ubuntu Server 13.10. The current line ...
0
votes
0answers
114 views

Can RDS IP Virtualization work with a single nic that already has multiple static IPs?

According to the MS TechNet article Configure Remote Desktop IP Virtualization, if there are multiple NICs in the server only per-program mode is supported. However if there is only one NIC but it ...
15
votes
2answers
903 views

Why is ARIN (etc.) allocating such large blocks of IPv6 addresses?

The whole issue of IPv4 depletion and waste seems to be final getting behind us with the (somewhat) increased deployment of IPv6. The sole purpose of IPv6 was to solve the issue of IPv4 address space ...
1
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0answers
82 views

How often does the geolocation associated to an ordinary IP address usually change?

Can anyone tell me how often should i expect a routable IP address (either v4 or v6) to have its associated geolocation (country + city level) changed, in average? I'm asking this because i'm ...
0
votes
0answers
78 views

VPN connection to win2012, server gets 2nd (wrong?) IP

I have a number of windows 2012 servers in our office network. The servers and their local IPs: S01 - 192.168.16.2 M01 - 192.168.16.3 S02 - 192.168.16.4 S03 - 192.168.16.5 DB01 - 192.168.16.6 WEB01 ...
0
votes
1answer
410 views

XenServer - VMs to access Internet, but should not be visible from the Internet

I have installed XenServer on my server at the Hetzner datacenter. I have bought an additional /29 subnet containing 6 usable IP addresses from them. I want to install more than 10 VMs on this ...
1
vote
1answer
2k views

Swapping IP addresses between two domain controllers

On our VMWare ESXi environment is a single domain controller (Windows Server 2008R2) installed. Now I have to upgrade it to a new server (Windows Server 2012R2) which should has the same IP. Many ...
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votes
1answer
31 views

Can I conclusively determine that a remote web server is denying access by blocking my IP address? [closed]

Let's say a web server administrator has configured his web server to deny traffic from my IP address or address range and throws an http 403 forbidden when I hit the site. (In this scenario I am ...
0
votes
0answers
70 views

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 ...
0
votes
1answer
101 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 ...
7
votes
7answers
890 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 ...
0
votes
1answer
65 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 ...
-1
votes
1answer
314 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 ...
2
votes
2answers
622 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
votes
2answers
53 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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votes
3answers
158 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 ...
-1
votes
2answers
68 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
120 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
votes
1answer
27 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
votes
1answer
147 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
175 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
votes
2answers
74 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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votes
1answer
87 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
165 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
620 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
264 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
90 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
vote
1answer
75 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
47 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. ...