Questions tagged [ip-address]

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

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Hot to get external host names for each internal private addresses?

My lab has a private network like this (public address: 133.3.133.133, host name: my.lab.host.name) lab-gateway (private address: 192.168.0.1) |__labgpu01 (private address: 192.168.0.3) |__labgpu02 ...
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How to selectively allow IP addresses to access my Nginx server hosted on Google Cloud - Compute engine. (Whitelisting)

I have an Ngnix server hosted on Google Cloud - Compute engine. I'm creating a public IP for this. However I want to allow requests from few IP addresses only which means I want to allow only few ...
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Why does a domain resolve to private IP

While going through a domain in the format as mentioned below , I did host lookup using the host command and got a private ip address. auth-ns.auth-ns.workspace.agate.example.com host auth-ns.auth-ns....
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Private IPV4 address space usage statistics (Least Used)

I'm trying to avoid IP conflicts with wireguard VPN and would like to select the least used private IPV4 address block. Are there any statistics published on usage of private IPV4 address space? Or ...
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Site/DNS with subdomain to any private IP addresses? [migrated]

So several years ago I saw a DNS service which you could for example put something like: 192.168.1.2.<something>.io and it would return an A record for 192.168.1.2 You could put any IP address ...
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Assign an IP address to each router’s interface

I have to assign an IP address to each router's interface. This is the network: You can find the network design here This is what I have: N1 is a private network with 1000 hosts: 192.168.0.0/22 N2 ...
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1answer
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How to add IPV4 range to unmanaged server

I am really inexperienced with Linux and networking. I bought an unmanaged dedicated server running ubuntu 16.04. I am having problems with binding the ipv4/24 range with my dedicated server. How ...
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Non-standard IP address with dashes

I ran the who command on a shared NetBSD box, and this weird user IP came up: <redacted> pts/33 May 13 02:13 (XXX.XXX.XXX.XXX) <redacted> pts/35 May 12 20:59 (202-172-110-147-) <...
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Router using WAN IP address as source address, even when originating from other LAN devices

I switched to a new router (with less possible configuration) today, and now all packets sent to my server have the source address set to the router's WAN IP address. In other words, with this new ...
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IIS 10 how do I remove internal IP address from response headers

IIS 10 on Windows Server 2016. All current patches are installed. A recent PCI scan claims that the internal IP address of the server is being leaked in HTTP headers. Unfortunately, this scanning ...
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Normalize client address in nginx logs

I have a log_format in nginx which uses the $remote_addr variable. It has a variable width -- it can for instance be 76.4.56.100. For alignment reason in the logs, I'd like these addresses to be all ...
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Why does my site domain server address say Index of and list my files?

I was contacted by one of my client's concerning the DNS issue,they had assigned someone, a task of developing the web portal and deploy it on remote server,however;when they try to check the domain ...
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Can't get certificate due to multiple IP addresses for subdomain

Please correct me if I am wrong, since I am a newbie to all things server. I have a website example.com hosted at host A. I want create subdomain sub.example.com on host B - EC2 instance in this ...
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How do I get a distinctive IP Address? [closed]

I see Google has 8.8.8.8 and CloudFlare has 1.1.1.1. How do I get myself a distinctive IP address? What's involved in acquiring something that has a pattern in it?
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How to determine whether an internet connection is wired or wireless?

I work in the IT department for the residential housing area at my university (network operations is separate from ours). I've wondered how is it that when someone registers a MAC address on our ...
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1answer
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Windows not resolving local hostname to hosts file IP

I have a multi-homed Windows 10 and I want my application to open a Server Socket on a specific IP given by its hostname. My machine hostname is MY-PC and it has a public IP 192.0.0.2/24 and a "...
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1answer
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100-1000 public IP addresses per instance in public cloud [closed]

I'd like to run an instance which can be accessed via 100-1000 different public addresses. It can be either IPv4 or IPv6. Is this possible to do in any public cloud currently? Preferably one of the ...
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How to find subnet associated with IP in Azure

I got IP address of Azure VM - it can be public / private IP. Is there any way to find Azure Subnet associated with that IP Address through azure java api?
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Request an address from a range of IP-addresses using dhclient dhcp-requested-address

I am in a situation where I need myDevice (ubuntu), when connected to router, to have any IP address in the range of 192.168.1.20 to 192.168.1.40. I am aware that adding the line send dhcp-...
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1answer
67 views

Why IPv6 addresses are not represented as dotted-decimal like IPv4 [closed]

Maybe this is not a right place for this question, but I didn't find anything better for it. The text representation of IPv6 addresses defined in RFC 2373 states that the addresses should be ...
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2answers
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What DNS Changes should I make?

I'm moving a website to a new server. But I only want to change where the website is pointing to. So basically example.com and www.example.com. I'm afraid if I change the A record for @, mail will ...
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1answer
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Finding all Public IPv4 and IPv6 addresses in a UNIX shell script

For monitoring purposes, I'd like to find out all public IPv4 and IPv6 addresses of a mobile-warrior UNIX box. Note that this is different from Finding the Public IP address in a shell script because ...
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Loopback interfaces is not pinging on both pcs for packet tracer

I am trying to ping my isp ip address (aka loopback 1) and loopback 10 to PC1 and PC2. Whenever I ping both ip addresses and default gateway from pc1 to pc2 it works. However, when I'm trying to ping ...
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Finding Host Name / Computer Name over IP

I'm trying to find out how to lookup the HostName of a computer over IP using Command Prompt, however I don't need the registered DNS name. I'm attempting to do an IP/DNS Database Cleanup so finding ...
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Feasibility of having two independent subnetworks on interconnected switches

I have the following setup, using two standard cheap switches that are interconnected by a long Ethernet cable: |------ SWITCH #1 | [ ] Equipment with public IP 217.x.x.101 (subnet 217.x.x.96/29) | [ ...
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Multiple Mac minis in a network (DNS setup)

I’m not sure if I am asking the correct question or not. Base of the question, we are a private school and recently we embarked on a project using filemaker where the students ...
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1answer
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Apache 2.4 ErrorLogFormat - How to show client IP address? - %a is blank

It appears upgrading from Apache 2.2 to 2.4 changed the format of the errorlog file. Error logs used to show the remote client IP address. Apache 2.2 errorlog: [Thu Aug 29 08:28:46 2019] [error] [...
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GCP - Assigning Static External IPs on Marketplace Solutions

I'm having trouble assigning a static IP to a Google Cloud Platform Marketplace Deployment and thought someone here might have some insight. I have an unassigned static IP ready to go in the same ...
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2answers
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Moved our web application server to a new machine with a new IP address, but some clients seem to have cached the old one

We moved our web application server (Windows & IIS) to a new machine with a new IP address. Updated all the DNS records to points correctly at the new server, and have ensured they have propagated ...
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Webserver (Apache/NGINX): Disabling connections / binding on IP address

I was wondering if I would be able to harden my Apache configuration in such a way it would only respond to one of it's actual vhost configuration (e.g. https://myhost.example.com/) and make it ...
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2answers
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How To See All Private IP Addresses Being Used On A Network

my question is how can I determine all the private IP addresses being used in my company's network environment? I am an Internal Auditor validating my firm's device inventory. The firm uses a tool ...
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291 views

Finding the IP Address of a computer (through a firewall)

I am looking for a way to find the IP address of a computer connected to a network. The scenario is the following: The computer whose IP address I want to find is connected to the network. This ...
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1answer
629 views

Can you give public IP addresses to multiple Docker containers on a single server?

I want to have multiple Docker containers on a single server, and have them both host web applications. If I only have one Docker container set up, I can expose port 80 on the Docker container and ...
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2answers
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Can I get all the virtual IP addresses given the CNAME

Is there a way to find all the aliases of the host? $ nslookup x x is an alias for y y is an alias for z z has address 192.0.2.45 So if I have z, is there a way of using nslookup/host/dig commands ...
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1answer
354 views

move server to different physical network without changing ip address

I have a set of 4 virtual machines (server 2008r2) that I need to move to a new data center which cannot have their IP addresses changed. I've tried for months to get the vendor to change them, but ...
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issue with pacemaker ipaddr2 and IPsrcaddr

I'm having trouble with setting up a cluster which contains two nodes. I want to setup a cluster with two centos nodes with a floating ip address and all packet which sends out from my active cluster ...
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1answer
230 views

most efficient way to block an ip address from connecting to a ubuntu 18.04 server [closed]

Since i do not have access to other layers, i would like to know the most efficient way to block an ip address from connecting to a Ubuntu 18.04 server. To the box itself, they are most likely ...
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2answers
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Scrape subdomain IPs using PTR records

I'm looking for a solution to an obscure problem. For security policy reasons we have a workstation using PeerBlock with a block list that essentially blacklists the entire internet, and then an allow ...
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1answer
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Subnetting: Access 10.1.0.1 from 10.1.2.1?

Here is the newly configured vlan on my Juniper: vlans { vlan1 { vlan-id 3; l3-interface vlan.1; } } interfaces { vlan { unit 1 { family inet { ...
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2answers
923 views

(hostname -i) command gives 2 different IP addresses

hostname -i command on a Debian 9 box gives 2 different IPs. hostname -I command gives the correct IP. As per the manual page, -i parameter shouldn't be used. It works only if the hostname can be ...
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1answer
606 views

How to configure TLS certificate for an IP address?

We are hosting our backend server in ALIYUN, since we are a foreign company we don't have ICP license and domain name for that server, but we want to configure https for load balancer IP address. I ...
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Blended Bandwidth with multiple carriers How to configure IP address

I have seen many colocation companies offering something called "Blended Bandwidth" and that makes me wonder how do they do it? Here is my example. If I would get two internet services, from ISP-A ...
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1answer
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In virtual hosting via IP address and via port number, how does a web server find out the IP address and port number?

In virtual hosting via IP address or virtual hosting via port number, a web server decides which web site to serve based on the IP address or port number that a request was sent to. When a web ...
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Can a computer have an ip address without an operating system [closed]

If a system does not have an operating system can it have an IP address?
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what ip will logged in a website if I access a website via another website through my PC? [closed]

If http://example2.com sends cURL connection to a website called http://example1.com. If I access http://example2.com from my pc to see the content of http://example1.com, than would http://example1....
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1answer
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Keeps setting windows-server-2012-r2 up in america (cali) when location is set to australia-southeast1-a

I have just tried to set up 2 back to back servers in Australia but for some reason when the servers deploy they are located in America in California. Any idea how to fix this issue? Both Zones are ...
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The packet not reaching destination when broadcasted with address 255.255.255.255 [duplicate]

I have a bacnet application which broadcast a message to all devices connected. When i use the address 10.9.x.255, it works and the device is able to get the response but when i use the global ...
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3answers
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What happens if the private IP range of a VPC falls outside the IANA defined ones?

The VPC documentation says: When you create a VPC, we recommend that you specify a CIDR block (of /16 or smaller) from the private IPv4 address ranges as specified in RFC 1918: 10.0.0.0 - ...
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Networking bits to number of subnets [duplicate]

How does one use the value of networking bits of a class A address to find the number of subnet bits and host bits? For example, with a subnet mask of /22, what would be the process of finding the ...
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2answers
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Why do people use 172.x.x.x instead of 192.x.x.x [closed]

Since I was a kid, I've always installed our home network with the default 192.168.1.x/24, but whenever i log into my university's network, i notice that they use 172.x.x.x, and the same thing goes ...

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