IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.

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Blocking IP address range for addresses allocated in India?

Does it ever make sense to block an entire address range, lets say the IP address range India? We don't serve anybody out of the country, and have been getting disproportionate amounts of traffic on ...
2
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3answers
48 views

How can i learn which ip's do i have on linux vps server?

I bought a VPS server yesterday. Server companies support is not avaible for now. I am going to set dns adress. So i know 1 ip number they gave to me, how can i learn how many ip's i have and what are ...
3
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4answers
134 views

How to determine info. about machine on network

At my place of employment, each employee is given a range of ten IP addresses to use for his/her machines. I have the range xx.xx.6.1-xx.xx.6.10. My problem is I want to use xx.xx.6.6 but something ...
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6answers
13k views

How do you choose your IP addressing?

In the life of a system administrator, always will come a moment when an IP subnet needs to be defined. Be it your small home LAN or the endless company WAN where madness lurks in the depths of ...
2
votes
3answers
445 views

Port forwarding over the Internet

I hope I'm on the right website as it is my first question here!! So here is my situation I have a small server hosted at home behind a DSL line for which I have a static IP. Now I would like to have ...
2
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1answer
2k views

ifconfig doesn't show a valid broadcast address

I'm sort of new at linux networking. I set the ip address of an interface (eth1) as follows... /sbin/ip link set eth1 down /sbin/addr addr add 130.30.5.15/24 dev eth1 /sbin/ip link set eth1 up ...
2
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2answers
5k views

What is the Ethernet Type II Protocol number for an ICMP echo request and reply?

Hi I wanted to know what the Ethernet II Protocol number for an ICMP echo request and also for a ICMP echo reply?
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4answers
22k views

How can I use multiple NICs on Windows Server 2008 host with one static IP?

I have Windows Server 2008 running on Dell PowerEdge 1425 SC. The unit has two NICs and I want to use them in a clustered mode for maximum efficiency (throughput) to avoid bottlenecks. Do I need to ...
0
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1answer
3k views

renaming vmdk files in ESX4i

I am using a standalone ESX4i server and I have the VMware CLI tools installed. I have copied a base build VMDK file which has the OS installed and configured and I need to rename the vmdk file to ...
2
votes
1answer
176 views

Why don't ports resolve correctly for localhost and {my server name}?

I set up VisualSVN Server, and SQL Server on my local machine. VisualSVN was set up to use https://dell/svn/ as the repository root. I was connecting to SQL Server using "localhost". At some point I ...
2
votes
4answers
5k views

What is the proper IP cofiguration for my 2 NICs and 2 VMs?

I have a Win2008 R2 server running Hyper-V with two VMs (Win2003 and Win2008R2). I have two NICs on my server, one for the host, and one for the Virtual Machine Manager. I have it configured as ...
3
votes
2answers
870 views

Funny IP address. Please help

So I have a computer on my network that will not connect to the internet. It says it's connecting on IP address 169.254.114.198 which is an unassigned address. None of my other computers are having ...
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2answers
93 views

http server connectivity puzzle

I have been seeing some strange connection issue in the production environment. The setup has two IBM Http Server's (IHS) and a network IP load-balancer in front of them (round-robin). One instance ...
5
votes
1answer
9k views

What does ifconfig promisc mode do, or promiscuous mode in general?

This is what man ifconfig has to say about it. [-]promisc Enable or disable the promiscuous mode of the interface. If selected, all packets on the network will be received by the ...
2
votes
2answers
737 views

Mysql dump from old server

I have to clean up as mess for a client. The DNS record of the domain has been moved to a different server (IP address). But I need to retrieve MySQL data from the old server. I still have the ip ...
2
votes
2answers
610 views

How can I block an application binding to a port (all OSs)

Following up from an issue today, I have a question, possibly stupid, but here goes. How can I block/prevent an application binding to a specific port? This pertains to linux/unix, but I'd be ...
2
votes
2answers
267 views

Use a static IP for NAT instead of DHCP

I have a virtual Ubuntu running and I want it to share my IP, ie use NAT.But I don't want to use DHCP, I will be testing some client/server apps from my native os to my virtual. I want the apps to ...
0
votes
2answers
896 views

Errors when switching to specific static IP

I had a Fedora box running using my static IP 69.169.136.6, etc, all configured according to what the ISP required. Just recently the hard drive failed (and I should have been keeping better backups) ...
3
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2answers
16k views

Squid: how to block websites for a particular IP address?

How to block websites for particular IPs by squid? Please give solution with example or configuration file.
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2answers
77 views

Detecting the user location [closed]

I visit a page with my firefox browser and i see this message "You appear to be outside the United States or its territories.". Also on http://www.fmylife.com/ they appear to detect the state/province ...
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votes
4answers
140 views

Basic dns question: www vs mail

I'm a web developer with a client that came to me needing a site redesign, and part of that included SEO work. (I hope this is the right place to ask this question!) The problem is that the client ...
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vote
2answers
4k views

Getting VirtualBox+Windows XP to view my Mac's localhost while offline

I'm running Windows XP via VirtualBox on my Mac. I want to load up sites on my Mac's localhost while offline. I know that I can append my IP and a nice domain name to the host file in C:/WINDOWS/...
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3answers
13k views

Remove X-Forwarded-For header in Squid 3.0

Some months ago I was working with Squid 3.0 and managed to get rid of the X-Forwarded-For header completely. Now I am trying to do the same thing but I do not seem to hit the nail. I have tried ...
0
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2answers
3k views

Command line based IP traffic generator

Does anyone know of a command line based traffic generator which can produce IP traffic so that we cant test QOS feature on DSL modem . It would be good if we can set the dscp marking in the IP ...
2
votes
1answer
118 views

PLESK direct www.domain.com to another server with a un [closed]

I got a customer where I host mail and www address on my server with PLESK 9.2 I want to direct the www address to another IP address like this: Original: www.domain.com -> IP: 1.2.3.4 mail....
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3answers
2k views

Change IP to domain name on linux

All, How is that we can convert an IP to a domain name address on linux machine. Suppose i always access my Pc with http://127.0.0.1 from the browser I want to change this to my.com Thanks....
10
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1answer
4k views

Can the value for a NS record be an IP address?

Until today I was used to believe it couldn't. From this page The name field can be any of: A Fully Qualified Domain Name (FQDN) e.g. example.com. (ends with a dot) An unqualfied name (...
0
votes
1answer
6k views

Linux: how to configure a secondary IP address upon boot-up?

Greetings experts, I've configured a nice little linux firewall machine here. It's got eth1 for the internal network (10.0.0.*), and eth2 for the external network (65.130.27.69/27). eth0 is not ...
0
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2answers
847 views

Some XP clients intermittently getting wrong IP for STATIC IP Server

We have a server with a static IP, let's say x.x.2.5. We have several WinXP (but not all) that will occasionally resolve the hostname to x.x.1.59 (x.x.1.x is the local subnet). The DHCP range in the ...
0
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4answers
92 views

Accessing networked computers by hostname?

I have computer with a host of DumbServer. When I try to connect to http://DumbServer or use DumbServer in Putty, it doesn't work. If I use the IP address, everything is fine. How do I set it up so ...
2
votes
2answers
2k views

Hosts file vs DNS for data center management

What are the cons and pros of using hosts files (updated via Puppet for example) vs DNS for data center machines management? I'm looking to switch from the tedious IP scheme, but concerned about ...
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3answers
181 views

interesting IP's?

I had seen a very interesting IP (something like 1.0.0.4) that was of some root DNS server and responded to pings, but I can't remember the exact IP. Anyone?
3
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3answers
385 views

only allow ip from australia

i want to only allow website visitors from australia. has anyone done this before?
2
votes
1answer
2k views

Duplicate IP address detection with multiple NICs

I am using arping -D to detect duplicate IP addresses within a network when setting up servers. (The network is controlled by someone else, and we have had many issues with IP allocation in the past.) ...
0
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1answer
2k views

angry ip scanner reports differnet hostname and computer name on a domain?

did a quick sweep of a network this morning and i am getting different hostname to computername in the list. this is a domain with a DC in there. it has active directory integrated dns. if you use ...
13
votes
6answers
35k views

Why was my ping answered by a different IP address than the one pinged?

While trying to setup a MSSQL clustering solution, I am running into a problem that is outside of my expertise that is related to networking. I was trying to find a free IP to used for my node. I ...
4
votes
2answers
12k views

How do I create a virtual IP address?

i am a student so i am pretty new at this but i am making a web cluster with two web servers so that if one server fails the website still stays up. my question is how do i assign a virtual IP address ...
0
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2answers
2k views

Public IP Routing over Private GRE tunnel

I have a GRE tunnel configured between two linux boxes. The tunnel works fine. I can ping from each host the other private ip. Head privateip: 10.0.0.1 publicip: 8.8.8.8 Tail privateip: 10.0.0.2 ...
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votes
4answers
6k views

Apache 2: SetEnvIf “IP Range”

In my Apache config I want to set an environment variable if I see that the visitor comes from an specific IP range. Currently I do it this way: SetEnvIfNoCase Remote_Addr "^194\.8\.7[45]\." banned=...
2
votes
4answers
1k views

nslookup/dig differ from how a browser resolves a hostname

At my site, we just moved an important service, and made the appropriate DNS changes internally and externally to make it work. When you bring up the site in a browser, it works fine. (Works in ...
17
votes
5answers
117k views

How to route different traffic thru different network interfaces (in Windows)

I've searched for details on how to do this but I've been unsuccessful - I wondered if someone could offer up some advice. So, let's say I have 2 network cards (LAN and 3G in my instance), both ...
0
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2answers
148 views

How to ban a specific IP from my website?

I'm using Apache,hosted on Linux.
0
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2answers
485 views

DHCP IP address with a client specified DNS server? Is this against spec?

I have some embedded network devices that allow me to specify whether or not they use DHCP. Unfortunately, we have some clients that have less than stellar DNS servers in their networks and have ...
14
votes
4answers
23k views

How to make Postfix use another IP address?

I'm using the Postfix mail server and I have 6 IPs available. I'd like to use another IP for the Postfix mail server for sending mail than the web server uses. How can I do this? My postfix version ...
3
votes
3answers
9k views

NGINX how to redirect accesses by IP to access by host name instead?

Somehow, Google has indexed my site via IP address as well as by domain. E.g., 180.10.1.1/index.php as well as www.mysite.com/index.php I want to 301 all those ip address urls to the appropriate ...
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3answers
6k views

How to create a shortcut for a IP:port url?

I have a service running on a specific port on a given ip : 12.34.56.78:12345. The server at this IP address is all mine (but not the network, so no switch/router tweaking), and I also have a bunch of ...
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1answer
466 views

Sendmail Default IP

I'm wanting to set the default IP used by sendmail to send email. I've looked through sendmail.mc and through the options availible in webmin and just can't find the answer. Thanks.
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5answers
282 views

Cheapest hosting company that would give me lots of IPs [closed]

Any recommendation on hosting company that would give me lots of ips(/22,/23,/24,/25,/26) with a dedicated server and chopped it up into vps for me?
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3answers
1k views

D-Link Router “Virtual Servers” with 0.0.0.0 IPs [closed]

I recently erased all of the Virtual Server rules from a D-Link router and added just the ones that I needed (for example I don’t need DNS or NetMeeting, etc.) You can see the defaults on the emulator....
1
vote
2answers
482 views

How to get secondary nameserver

i was wondering how i can get a secondary nameserver with a different ip. I have a dedicated server, with already 2 IP adresses, but they are still on the same server. I need to have a IP adress on a ...