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

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1answer
82 views

Use old server IP address to New server [closed]

Now we are going to use new server to host our website. We are going to use our old server IP address to new server. Can we replace our new server IP address by old server IP address? If possible, ...
3
votes
1answer
3k views

Can a DHCP reservation use an IP address in the exclusion range?

Windows Server 2008 R2, running the DHCP service. DHCP Scope: 192.168.1.1 - 192.168.1.254 Exclusions: 192.168.1.1 - 192.168.1.99 If a reservation uses an IP address in the exclusion range (like ...
1
vote
1answer
253 views

HTTPS for server IP address shows as invalid certificate

I have a website, say www.foo.com with an IP address 1.2.3.4 I have an SSL certificate for www.foo.com and when I visit https://www.foo.com all is good. However if I visit https://1.2.3.4 it says the ...
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votes
2answers
58 views

Synchronize information in same server with multiple ips [closed]

So i have a unix dedicated server and multiple ips. I am running a website on both ip address. 192.168.1.0 192.168.1.1 How do i make it so the files and folders on both ip addresses are ...
1
vote
3answers
138 views

What information can an outsider obtain from my system by knowing only the IP address?

If somehow an intruder becomes aware of the IP address of my system: What information can he obtain from my system or about my network? What type of harm he can do to my system remotely?
0
votes
3answers
7k views

Finding the first and last address of a block of IP addresses with subnet mask

I am not sure if this is the right place to make this question but I thought this is one of the most appropriate SE's site to make a question on networking. Please move it to other more appropriate ...
3
votes
3answers
222 views

Subnetting Challenges

I am trying to plan out a network with the following requirements and am having problems trying to complete a subnet plan for my network. The network consists of 3 routers that connect 3 different ...
2
votes
2answers
722 views

ISA 2006 does not allow traffic using FQDN

I experience an issue accessing Tomcat running over SSL with MS ISA 2006 in front. When I access using the internal IP address (e.g. https://10.0.42.136/...) everything works fine and ...
44
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7answers
3k views

How to take full ownership of an IP address?

My business is... troublesome. What I do is legal in every country on earth, but some people don't like it, and make it so tough on my poor ISPs that I am forced to go looking for new providers more ...
1
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0answers
199 views

psad, alarm for host scanning broadcast address

I've set up psad 2.1.5-3 in Ubuntu 10.10. I keep receiving emails like this =-=-=-=-=-=-=-=-=-=-=-= Wed Oct 19 17:26:57 2011 =-=-=-=-=-=-=-=-=-=-=-= Danger level: [4] (out of 5) Scanned ...
6
votes
2answers
771 views

Amazon EC2 multiple private IP addresses per instance

I have a scenario where an application requires multiple private IP addresses but does not require the resources of multiple instances. In this case, I would like to run multiple jboss instances on ...
1
vote
2answers
1k views

How to fetch new IP address under Ubuntu Server on VMware Workstation?

I have VMware Workstation 7 and Ubuntu Server 10.10 installed on it. When I copied my virtual hard drive to another PC it took same IP address. Is it possible to somehow receive another IP address ...
0
votes
1answer
4k views

unable to ping hostname, but \\hostname\c$ works?

I'm having a strange issue on my initial lab setup. Situation: Host with OS Server 2008 R2 64bit, on this host a Virtual Machine in Hyper-V with OS Server 2008 SP1 32bit. The virtual machine has a ...
0
votes
3answers
2k views

A Way To Determine IP Range From CIDR? [duplicate]

Possible Duplicate: How does Subnetting Work? Is there a formula or a calculator for determining an IP address from CIDR that I was given: 38.103.17.160/27? I would like to know the ...
0
votes
2answers
336 views

How can I make the most effective use of limited static IP addresses for a mail server?

I am running a Zimbra ZCS 7.1.2 server. The server is setup to host multiple domains, 3 at the moment. But I have a problem and I think I am over thinking the solution. The problem is I want every ...
2
votes
3answers
1k views

How to bind a non-local IPv6 address?

Is there an equivalent of net.ipv4.ip_nonlocal_bind for ipv6 ? Need to start my nginx on boot on such an IP... My Ubuntu doesn't have this IPv6 assigned on eth0 quickly enough despite this ...
1
vote
1answer
452 views

Setting up reverse DNS for a /25 block of IPs

I've currently got a block of IPs that go from xxx.xxx.xxx.128/25 Here's my current rDNS setup: $TTL 12h $ORIGIN 128/25.xxx.xxx.xxx.IN-ADDR.ARPA. @ IN SOA ns1.domain.com. ...
1
vote
1answer
80 views

Setting up internal and external IP [closed]

I am quite new at setting websites up to contain SSL certificates and allow them through a firewall. I am currently at step one and have been told that I need to set up an internal IP address on my ...
10
votes
3answers
735 views

Should I split my data network into 2 separate VLANs?

I am currently using 10.54.0.0 /19 for all my desktop clients and printers. We have approx 550 clients/printers. Besides bandwidth, which is barely being utilized, are there any other reason to ...
0
votes
2answers
896 views

Force DHCP server to give a new IP address

i connect to the web via LAN and IPs are assigned via the DHCP server. so a simple sudo dhclient -r sudo dhclient does not work. is there another way to get a new IP address from the DHCP server? ...
1
vote
3answers
414 views

DNS unavailable; IP address shared by 4 websites. How to extract numerical addresses of each website?

Preliminary note: our DNS service is down, and I have no access to the website settings; I am just a team member trying to help people who need the website right now. Four websites share the same IP ...
-4
votes
3answers
752 views

Why most local addresses are like 192.168.xxx.xxx? [closed]

Is it some standard/practice or technical requirement which force network engineers to use this IP address pattern?
1
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6answers
2k views

How to retrieve the IP Address Assigned to the machine by ISP

my question is regarding the IP Address assigned to a machine, whenever we go to any site which reveal our IP Address, they display a number which is assigned to the machine through which we are ...
7
votes
4answers
911 views

CIDR Ranges for Everything except RFC1918

I'm looking for a list of CIDR blocks for "The Internet", i.e. everything from 0.0.0.0 to 223.255.255.255, excluding RFC1918 address space of 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 (yes, I know ...
1
vote
3answers
270 views

Email Marketing and Whitelisted IP Addresses - 100% Certain of Delivery

Not positive this is the proper forum in which to ask so please excuse if I should be looking elsewhere... Have a client I am email marketing for. My send IP Addresses have been whitelisted by the ...
-4
votes
2answers
128 views

Inaccessible server after DNS server change [closed]

After configuring a domain name to use the name server of the new server, the new server had become inaccessible (even if using the IP address). Is this normal?
7
votes
3answers
4k views

Is there an “official” name to the 0.0.0.0 IP address?

As 127.0.0.1 is known as the loopback address, is there a shorter term to refer to 0.0.0.0 other than "the IP address who means all IP address on local machine"?
1
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3answers
116 views

How to enable my clients use a custom domain name

I want people to be able to use a custom domain name to access an application I have hosted on my server. From what I have read, people can do this by changing the A Record of their accounts to my IP ...
-1
votes
1answer
70 views

Which Class B address can not be used as host addresses? [duplicate]

Possible Duplicates: How does Subnetting Work? Is X.Y.Z.0 a valid IP address? I am a beginner in the field of Networking. Can 172.30.1.0 be used as hostID? If not, why? Please give me ...
0
votes
0answers
48 views

How to enable my clients use a custom domain name

I want people to be able to use a custom domain name to access an application I have hosted on my server. From what I have read, people can do this by changing the A Record of their accounts to my IP ...
0
votes
2answers
133 views

Should I ever configure a host with a public IP address to accept traffic from a private IP address?

I connect the 'net with a public static IP (my router's IP address for NAT) and a /29 subnet (for machines behind the router). On my router, I have: #sh ip route | inc x.x x.x.0.0/16 is ...
6
votes
2answers
2k views

DMZ subnet: to NAT or not to NAT?

I'm looking at setting up a DMZ behind a Cisco ASA that will contain a large number of HTTP front-end load balancers and SSL offload services - over 100 IPs, concentrated on a smaller number of hosts. ...
2
votes
5answers
1k views

Is there a way I can block people from a certain countries from visiting my website but allow certain IP addresses from those countries to visit it?

I want to prevent people from certain countries from visiting my website - but I want to allow some defined IP addresses from those countries to be able to access it. Is it possible? If yes, how?
3
votes
2answers
988 views

Deny Static IP Assignments

I am currently using a SonicWall Pro 2040 with DHCP enabled, but only with static IPs mapped to specific MAC addresses. There is no dynamic IP scope being used. Currently, no DHCP request will resolve ...
1
vote
1answer
295 views

Unknown IP-address shows up in access.log

I am setting up a production environment on my VPS for a Rails app I'm working on. I have not registered a domain name yet, so what I did was just edit my local hosts-file manually. This works fine ...
0
votes
1answer
521 views

Multiple internal IP's running on one external IP?

My ISP has given me 1 static IP address, however, I need to run multiple internal IP addresses (from VPS's) under that 1 public IP address. I have enough network connections to my router, but not ...
0
votes
2answers
178 views

Problem trying to access local website (settings in hosts file) on Host PC (Win XP SP3) from Guest PC (VM Win 7)

Host PC : Windows XP SP3 Guest PC : Virtual Machine running Windows 7 SP1 Host PC IP Address : 172.16.5.55 Guest PC IP Address : 172.16.6.62 On my Guest PC I'm trying to access a ...
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votes
3answers
454 views

I have two public sites on my Ubuntu Server (Apache2). How would you distinguish the two when requesting them?

Sorry if the question is unclear. I have two sites which I would like to set up in Apache2 on Ubuntu Server. Both of them should be open to the public. I would like to set up a separate IP for each of ...
0
votes
1answer
95 views

Sending email from IP as domain Ubuntu

I want to install a mail server on an Ubuntu server, however I don't want to hook any domains up to it. Is it possible to configure it as an IP address, so my email address will be: me@ipAddress ...
1
vote
1answer
236 views

IP address resolution in Cassandra MultiDC setup

We have a scenario for which we are considering using apache Cassandra for deployment for our data storage needs.The setup is to be spread across multiple data centers in different regions(physical ...
-1
votes
4answers
917 views

Ethernet interface number changed, and old one does not exist, but does not leave IP address

I have a virtual machine with Mandriva 2007.0 (yes, old - unfortunately we do not have a choice here). Anyway, the problem: Before reboot: active network interface = eth0. No other interfaces ...
-1
votes
2answers
124 views

Adding More IPs to a Netcard on Linux

How do I add more IP addresses to a network card on Linux? Do I use the route command? It's Ubuntu Server 10.04 LTS.
0
votes
1answer
384 views

Allow website access from specific subnet, otherwise ask for credentials

How can I configure IIS 6 to allow access to a sub folder from our intranet without any authentication (well, the IP address needs to be checked but that's already working) from the internet only ...
-1
votes
2answers
2k views

DNS simulation for testing purposes?

I'm wishing to simulate DNS for testing purposes, having decided to learn about it for if I was to go into webhosting. I've considered BIND (and tried setting it up), but that wasn't suited to my ...
3
votes
4answers
1k views

Is 0.0.0.0 a class A IP address? [closed]

Some sources say that class A IP addresses start at 1.0.0.0, and some say 0.0.0.0. I have also heard that 0.0.0.0 is a special kind of IP address. So is 0.0.0.0 a class A IP address or not?
1
vote
1answer
51 views

Connecting to a service from outside the network

I seek to run a server on the 8000 port on my machine. My computer is part of a wireless home network which is connected to the Internet by a Linksys router. In this scenario, how would a host outside ...
0
votes
2answers
2k views

Windows 7 DHCP client not working on Wired but works on Wireless

I've got a 1 year old Dell laptop running Windows 7 Pro 32 bit. Last week, the PC started refusing to obtain an IP address via DHCP, but this only happens on the Wired Ethernet connection. The PC is ...
0
votes
2answers
730 views

How to assign different ip address on devices connected to router?

Is it possible to assign different ip address to the devices which connect to my router? When I visit cmyip.com from my psp and laptop, I see that they're the same. I need this because I'm working on ...
1
vote
1answer
240 views

Fixed IP on Linux boxes in DHCP router LAN

Folks, I am trying to use fixed IP on few Linux boxes in my LAN which uses DHCP right now. My ISP router is configured to use DHCP and there already are quite a few laptop users who would want to ...
0
votes
2answers
1k views

How to change the 'internal IP address' of a Juniper SRX210H

How do I change the 'internal IP address' (Not the WAN IP) (192.168.1.1) to something else via the 'Juniper Web Device Manager'? Thanks!