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

learn more… | top users | synonyms (1)

-1
votes
1answer
18 views

IP address to geolocation without any lookup database

I wonder is there any way on linux shell command(s) to find an IP's approximate physical location without using any lookup databases such as MaxMind GeoIP, db-ip etc.. I know there are some API ...
-2
votes
2answers
41 views

how to change the special port output source address?

I want to change the my datapackage from port 25 to another internal address(192.168.2.253). iptables -A OUTPUT -o em1 -p tcp --dport 25 -j SNAT --to 192.168.2.253 But I get the output is: ...
0
votes
0answers
30 views

How can you calculate IP address subnet ranges? [duplicate]

If you're given: Number of needed subnets: 2 Network Address: 195.223.50.0 I can answer the following: Address Class: C Default Subnet Mask: 255.255.255.0 Custom Subnet Mask: 255.255.255.192 ...
1
vote
1answer
21 views

One SSL certificate for load balancing amazon instances

As the title says I want to have one SSL certificate for multiple instances in amazon AWS. The multiple instances are connected to the internet through an load balancer. To make an SSL certificate and ...
0
votes
0answers
19 views

L2TP daemon server multiple IP

I have VPS with 3 public IP - Debian 7. I would like to have 3 L2TP damemons (one ip each) NATing traffic to each ip. Something like this l2tp_multiple_public_ip_diagram. I have set up l2tp daemon for ...
-3
votes
1answer
32 views

IP address detection through firewall [closed]

Suppose my computer connections are filtered by a firewall on which I have no information and no control. Will the administrators of the network will know which websites I did visit thanks to their ...
-1
votes
2answers
45 views

How to detect proxy server address? [closed]

My computer is controlled by a proxy server. How can I detect its name/IP address ? I would love to know if there any command lines (on Windows) to do that. Thank you in advance.
0
votes
1answer
28 views

Windows Server 2012 R2 - Email server's external IP address when the Azure VM starts

I have been trying to setup a task in the task scheduler that sends an email to me when the server starts. The email should contain the external IP address of the azure virtual machine. What should ...
-1
votes
1answer
106 views

Whitelist Elastic Load Balancer based on IP [closed]

I'm serving HTTP traffic on port 80 through an ELB. Since a short time, a growing amount of clients are asking me what our IP addresses are (to harvest data). Apparently they can't whitelist the DNS ...
51
votes
6answers
4k views

Why can't MX records point to an IP address?

I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server. But, in principle, ...
0
votes
1answer
28 views

Virtualbox Appliance: Maintain same Private IP as used with Vagrant

I have an OVA which I created in conjunction with Vagrant. I want to distribute the OVA, but when people start it up I want to have the same Private IP address assigned by Vagrant. So far I've had ...
0
votes
1answer
70 views

Secondary IPs on DMZ machines not working

I am moving some virtual machines from my DMZ in a bladecenter over to my new cisco UCS. We are using Hyper-V, and are running Server 2012 on the old bladecenter, and Server 2012r2 on the new UCS. ...
-1
votes
1answer
103 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
85 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
70 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
70 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
30 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
51 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
220 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
35 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
294 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
879 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
127 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
967 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
43 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
116 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
2k 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
116 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
91 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
194 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
503 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
407 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 ...
1
vote
1answer
564 views

RHEL 6 NetworkManager and secondary IP addresses

I've got two hosts running the same release of RHEL (6.4). I've been given eight IP addresses to put onto one NIC in each host. On host A, I manually created ifcfg-eth0, ifcfg-etho:1, ifcfg-etho:2, ...
7
votes
4answers
10k 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
157 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
972 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
vote
0answers
100 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
106 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
592 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 ...
-2
votes
1answer
34 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
87 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
130 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
917 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
401 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
765 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
56 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?
-2
votes
3answers
177 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
74 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 ...