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

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19 views

Fault tolerance by using two IP with two interfaces

I would like to have a fault-tolerant setup for http requests. For brevity, let's assume we have a very simple Web-service and there is no difference which server responses. So I will have the ...
1
vote
1answer
17 views

Can't reach iis server via external ip

I am using aws from amazon and I have iis intalled on my server. I have created a test site but I can't reach it using external ip address. It is only reachable throught http://localhost- and ...
-1
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0answers
16 views

Output only the IP addresses of the online machines with nmap [migrated]

I know how to use Nmap to find the list of hosts that are currently online. What I would like to do is get a list of just their IP addresses, now it displays extra information such as 'Nmap scan ...
0
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1answer
31 views

First Reply on Ping is Unreachable the rest is okay

please check this weird ping i'm having ping 192.168.22.181 Pinging 192.168.22.181 with 32 bytes of data: Reply from 192.168.22.1: Destination host unreachable. Reply from 192.168.22.181: bytes=32 ...
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votes
0answers
15 views

Do I need to configure my server so it's found by the domain name? [on hold]

I have bought the domain name and it's associated with my server's IP, but when I do ping -c10 domain-name it doesn't find the host, why is that. I am on Linux so any configuration tips should be ...
-1
votes
1answer
27 views

Why can't I see public ip on my cloud server? [on hold]

I have recently applied for a cloud-based server. I am not very experienced in system admin. So pardon me if this is silly. I was using ifconfig command to view available network interface. But I ...
-1
votes
1answer
27 views

Transfer IP address while Server Migration [on hold]

I have to migrate my websites from server A to server B. Server A (213.171.207.165) I have 3 websites running on server A website1.com (213.171.207.235) website2.co.uk (213.171.207.245) website3.ae ...
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0answers
13 views

Route port forward through 2 windows server 2008R2 network adapters to another network

our phone system at work is on a separate network to everything else and I need to forward a port from our gateway to it to allow our phone tech to remotely administer it. I have plugged the phone ...
0
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1answer
38 views

IP as a method of access control? (IP Spoofing possibilities)

I'm currently investigating the use of IP addresses as a form of access control: for example, only allowing access to an Apache VirtualHost if the request originates from a specific IP address or ...
26
votes
4answers
7k views

Users with Google's IP address. How is it possible?

I have a spanish website and I do not allow people from non-european countries to register and to login. Some time ago I started to receive messages from users who can not login. When I ask for their ...
-3
votes
0answers
28 views

How to use a specific ip or mac address for an application [on hold]

A simple but complex functionality. How to force an application to use a special IP address or a special MAC address(interface), for linux or windows platform. I mean a per application way. I googled ...
0
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1answer
29 views

Restrict outgoing network traffic by domain name (Linux)

My root goal is to be able to prevent attackers from making unauthorised outgoing connections on my server (e.g. for connect-back shells). I can achieve this by blocking all ports for outgoing ...
-1
votes
1answer
26 views

company computers with proxy but no gateway?

Can I safely assume that client computers in my customers environment do have a configured gateway (whether static or DHCP)? It looks obvious but I wonder if this scenario is realistic: In corporate ...
0
votes
1answer
10 views

Unbound DNS: How to get source IP address from python mod

I use Unbound DNS with a custom python module. Based on who sends a query, I want to return different results. How do I get the Source IP from the Python module?
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votes
0answers
26 views

way to trace IP address change in Windows [closed]

Ours is a small network consisting of 15 users. We have lan messenger installed in every machine. Someone is misusing it by using annonymous IP address in their system. We traced the anonymous IP as ...
-3
votes
2answers
58 views

TTL in ping vs dig

When I ran ping google.com, I get a ttl value of 55: 64 bytes from 173.194.127.103: icmp_seq=68 ttl=55 time=16.4 ms When I ran dig google.com @ns1.google.com., it get a TTL value of 300. ...
-1
votes
0answers
19 views

mx recodrs misconfigured in ZPanel [closed]

I am using ZPanel for my domain and hosting. now my domain is working is fine. but i facing some problems on Webmail configuration. I am updating My DNS Recods in Zpanel like this Host Name TTL ...
0
votes
0answers
9 views

IP address visible in browser's “Inspect Element” [migrated]

I've recently started hosting my own website on a machine on my network. Whenever anyone goes to my site and does "Inspect Element" my external IP address is visible to everyone. This seems like a ...
0
votes
2answers
39 views

Ubuntu 14.04, setup server IP for datacenter, IPMI

i'm going to build a server and send it to a datacenter. I got this from the datacenter. They told me to setup the server with it. VLAN: 256 IPv4: 79.133.49.168/29 IPv6: 2a01:07e0:0000:0256::/64 ...
-6
votes
1answer
95 views

Get a static internet ip address [closed]

Whenever my router goes off my IP gets constantly changed, which is not favourable when running an online service. How can I prevent this from happening?
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votes
2answers
45 views

How to generate a Self Signed SSL Certificate bound to IP address? [duplicate]

I have my application hosted in the cloud and while demoing to prospective clients, I would like to make sure that my browser doesn't complain due to the lack of trust. So I want to generate a self ...
-1
votes
0answers
27 views

File Share over IP without Domain Credentials [duplicate]

My file server is running Windows Server 2012 R2, and is also the domain controller. We use custom in-house applications, which require access to a network share via IP address as opposed to over DNS. ...
2
votes
1answer
26 views

Difference between ip link eth down and ip link dev eth down

What's the difference between ip link set eth0 down and ip link set dev eth0 down ? The difference between the commands does not appear to be documented anywhere.
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0answers
17 views

Is there an easy way to monitor another domain user's processes and IPs these processes are contacting? [duplicate]

Is there a way to monitor which IPs the startup processes of another domain computer is contacting as a user logs in? Both person logging in and person who will be monitoring are domain admins. Short ...
-1
votes
1answer
40 views

Is there a Universal/Generic Default Gateway Address in IPv4? [closed]

Is there a universal and/or generic default gateway address in IPv4? I'm looking for something similar to the way you can always reference a NICs IP address from itself with 127.0.0.1 regardless of ...
0
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0answers
25 views

Does netfilter reassemble IP fragments when packet is forwarded?

IP datagram should be reassemble in the termination of the path because the fragments may arrive from different paths. I think Netfilter need to reassemble a IP datagram to inspect the whole payload ...
0
votes
2answers
38 views

Private Network Interface between to MacOSX servers

We would like to set up and private single cable connection between two Mavericks servers, that also need to talk to the rest-of-the-world. The two servers for sake of argument are DB and Web. There ...
-3
votes
0answers
25 views

Master IP, Shared IP or Dedicated IP; which is faster?

i have such as these ip adresse on my server (example) 198.216.0.10 198.216.0.11 198.216.0.12 198.216.0.13 198.216.0.10 is the main one(MASTER IP), and i'm using it as shared ip with about 10 ...
0
votes
1answer
26 views

Is there any solution to change the source IP from outgoing WAN A to receiving WAN B?

I am configuring a office router for crossing the GFW in China. I want to use WAN A(actually a low bandwidth VPN tunnel) only to send package to target servers (YouTube for example). And change the ...
0
votes
1answer
28 views

IP route not on default gateway

I am trying to setup a network that is only accessible if you go through the '10.222.3.1' switch. It is a test environment that we do not want interfering with our production environment. The trouble ...
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votes
5answers
136 views

What happens if ISPs mess up IP allocation?

I've been wondering about this for a long time but never really got around to asking it. I know that a lot of companies were initially assigned IP addresses within the /8 (Class A) range and a lot ...
0
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1answer
39 views

Telnet, Startech, and a Transmitter

I'm at a bit of a loss and will also preface by saying that I have very little experience working with Telnet. I have Startech Serial over IP 'webserver' setup, everything seems fine on this end. Next ...
0
votes
1answer
19 views

Connect remotely to an APIPA assigned host

I had the unfortunate (and not correctly planned) event of having one of my remote Hyper-V hosts assigned an APIPA address hence i cannot connect by any means on it. Funny thing is, i can RDP to the ...
-1
votes
0answers
59 views

WinServer 2012 DC with 2 IPs on one NIC - DNS and other Problems

I have a Windows Server 2012 Domain Controller which is also temprarily running an SQL Server. For not having to change the SQL Server IP in all the clients I assigned its former IP to the DC as the ...
-2
votes
1answer
29 views

AWS Multiple Elastic IPs to one instance

I need some guide to lead me to setup multiple (6) ips for 6 websites (1 ip - 1 website) on one instance. or what to look for I have found this http://www.ec2instances.info/ If it is true I need t2 ...
0
votes
1answer
39 views

Postfix configure a gateway to outbound emails

I have a server configured with Postfix in my business office. I have another server at a hosting provider that I want to send all my outbound mail through. How can I do this. The only way I know its ...
0
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0answers
31 views

opensm infiniband route table

I have two centos 6.6 vmware vms. VMware is told to do a bridged network and to replicate physical network. eth2 is dhcp managed by NetworkManager. I am able to get to the point where I can assign ips ...
0
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0answers
24 views

Support for UDP-Lite

In order to be effective, UDP-Lite requires the link layer to disable its frame CRC check for frames carrying UDP-Lite packets. Are there any deployed link layers (Wifi?) that implement this explicit ...
2
votes
2answers
140 views

Windows firewall, netsh, block all ips from a text file

am using the following scrip to block ip's from a text file into the windows firewall. I'm using windows 2008 R2 @echo off if "%1"=="list" ( netsh advfirewall firewall show rule Blockit | ...
0
votes
1answer
46 views

Redirect subdomain to an Apache Virtual Host

I have a website "example.com" hosted on a provider that allows me to manage my own DNS. I want example.com to point to the provider's IP address but I want "subdomain.example.com" to point on my own ...
-4
votes
1answer
23 views

is host id size of IP address will vary between the private and public networks? [duplicate]

I understood that size of host id in the class c network is 8 bits(1 Octet) Classful network After started exploring about private networks, in the below link Private network The host id size of ...
-6
votes
2answers
30 views

Call a server Ip simulating domain name [closed]

in order to migrate my domain name to my new server, I would like to test it with real domain name. I think we can call Ip server giving as argument domain name ? How can I do that ? Something like ...
0
votes
2answers
55 views

Apache module RPAF documentation? [closed]

I installed libapache2-mod-rpaf package on Debian because mod_remoteip seems not available. I cannot find any documentation about this module. I found a github repo but the configuration options are ...
1
vote
2answers
243 views

How is a TCP request routed from a virtual machine to an outside resource and back again?

Scenario: Computer A has a local ip of 192.168.1.100, which is running a VM inside of it. The VM now makes a tcp request to an external IP address (74.125.225.98). Could someone explain how the ...
2
votes
2answers
76 views

Assign multiple IP and Gateway in Ubuntu Server

I'm trying to find an option to add/assign multiple IP addresses and Gateways to the Ubuntu Server. The reason behind is, I want to access devices from two different networks. For instance I may want ...
0
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0answers
29 views

openVPN on another IP

I had a working OpenVPN on my server, and it was working fine, redirecting traffic to the/from the internet, but when i have found that the traffic to the services on this server not routing through ...
0
votes
1answer
67 views

What is the best way to redirect a user to another server and domain and keeping the URL intact?

I suddenly have a client who doesn't understand much in programming. So the best solution in this case would be - to run the app on my server while keeping his domain under his control. He has there ...
0
votes
1answer
39 views

Client not routing through CentOS7 OpenVPN

I recently setup a server on digitalocean, i setup the vpn server key etc and i can connect with my client, the problem is that if i connect and i google for my public ip adress that i don't get the ...
0
votes
0answers
70 views

Nanostation M5 Point to Point, SOHO Router IP Addressing

I have two sites both with Line of site from each other. Each of the two sites has a Draytek 2830 on site with an ADSL connection. I have a pair of Nanostations which I want to setup on the Ethernet ...
-2
votes
1answer
35 views

Online tool to calculate IP mask [closed]

I know there are so many tools to calculate a network range starting from an IP and its mask (192.168.1.0/24) but do you know an online tool to calculate the mask starting from first and last IP ...