Questions tagged [ip-address]
IP address is a numerical label assigned to each device participating in a computer network that uses IP for communication.
589
questions
2
votes
1
answer
2k
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 ...
1
vote
1
answer
1k
views
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 ...
-2
votes
1
answer
557
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 ...
0
votes
2
answers
232
views
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 ...
0
votes
1
answer
91
views
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 {
...
1
vote
2
answers
6k
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 ...
-1
votes
1
answer
1k
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 ...
1
vote
1
answer
239
views
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 ...
-2
votes
1
answer
55
views
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 ...
-1
votes
2
answers
2k
views
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?
-4
votes
2
answers
67
views
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....
0
votes
1
answer
65
views
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 ...
1
vote
0
answers
119
views
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 ...
0
votes
3
answers
799
views
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 - 10.255.255....
1
vote
0
answers
4
views
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 ...
11
votes
2
answers
42k
views
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 ...
1
vote
1
answer
1k
views
what are the differences between addr and mountaddr NFS mount options?
I realized that the /proc/mounts include some parameters which are not shown in the /etc/mtab file and by the mount command. For instance, mountaddr.
In my Linux boxes both values addr and mountaddr ...
0
votes
1
answer
3k
views
On VirtualBox, is there a way to set 'Reinitialize MAC address' as default?
When cloning a VirtualBox instance, is there a way to set the "Reinitialize the MAC address of all network cards" as the default?
Humans sometimes forget to tick this box, with the resulting horror ...
-1
votes
1
answer
182
views
Change outbound IP - centos
i have a server (linux/centos) and my default ip is:
111.111.111.111 so i bought another ip (ip failover) 222.222.222.222
if i visit in browser 111.111.111.111 or 222.222.222.222 its opening same ...
0
votes
2
answers
44
views
Best way to secure a SQL VM when clients do not have static IPs
I have a VM running SQL in the cloud. Typically I would set up inbound rules on the SQL ports in Azure and on the VM's firewall, but my clients do not have static IP addresses to use in the rules.
...
0
votes
0
answers
414
views
Failure to ping two devices on the same subnet
Need some help with Routing. I do not understand how to make this work
I have 2 Devices configured. One of the devices(somebox1) is configured with 2 interfaces and the Routing table looks similar as ...
0
votes
1
answer
1k
views
Cannot use port 80 twice with different ip addresses?
I have an interesting problem right now. On a Windows Server 2012 R2 I have two IP addresses, say 192.0.2.1 and 192.0.2.2. On one address e.g. 192.0.2.1 a web server runs on port 80, which is ...
0
votes
0
answers
1k
views
IP Address and Subnet Address Validation
I am developing a code to validate that an IP and Subnet IP combination is a valid one. Say the IP address is 192.179.10.105 and its subnet mask is 255.255.0.0 - so what are the validations we can ...
3
votes
2
answers
724
views
How to protect a web application from IPv6 bots?
I'm interested in this in the context of protecting a web application from bots, but I guess it applies to all kind of attacks that can be done over IPv6 by bots.
In a web application, you have some ...
2
votes
0
answers
41
views
Does Loopback able to support all TCP/IP protocols
Does a Windows loopback adapter supports ACD and duplicate IPs. Say we have a code that supports full TCP stack and we bridge the program to loopback using PCAP.
If in case I set both the address ...
2
votes
1
answer
7k
views
How to manually set link-local address in Debian?
I'm trying to use manually assigned link-local addresses to have more meaningful routing tables. I disabled auto configuration for all interfaces in /etc/sysctl.conf
net.ipv6.conf.all.autoconf=0
and ...
3
votes
1
answer
7k
views
How to block website for all countries except US and Canada
I have a website which is only for US and Canada visitors. I don't want to make it visible to other visitors.
I want to use Geo targeting solution but I have a amazon hosting it did return current ...
0
votes
0
answers
259
views
ifconfig displays public IP address
I've logged via ssh to remote host. When I type ifconfig output contains:
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 106.120.101.39 netmask 255.255.255.128 ...
16
votes
7
answers
97k
views
Assigning a fixed IP address to a machine in a DHCP network
I want to assign a fixed private IP address to a server so that local computers can always access it.
Currently, the DHCP address of the server is something like 192.168.1.66.
Should I simply assign ...
3
votes
7
answers
2k
views
What does the netmask in an IP address actually tell you?
There are several questions out there asking what the CIDR netmask is, and how it's calculated. But after reading all the top answers, I'm still left wondering, how does the netmask let us distinguish ...
0
votes
0
answers
143
views
Outbound ip address of server keeps changing
When specifying an API key for Google, you have the option to restrict it by ip address. I therefore restricted my API key so that it only accepts requests from ip-address 82.163.78.2.
However, ...
171
votes
10
answers
34k
views
How bad is IPv4 address exhaustion really?
For years the press has been writing about the problem that there are now very few IPv4 addresses available. But on the other hand, I'm using a server hosting company which gladly gives out public ...
0
votes
1
answer
665
views
.UnavailableSocketError: Inet address 127.0.0.1:7000 is not available
I tried to create a cluster with three Cassandra nodes on my machine.I have unpacked tar.gz and changed listen and rpc_addresses, also JMX_PORT.It did not work
~/apache-cassandra-3.11.1-1/bin$ ...
0
votes
1
answer
1k
views
L2TP/IPsec server - reserve an IP address to a certain user in AD
I have set up a rather simple L2TP/IPsec server with xl2tpd, which has a pool of IP addresses in xl2tpd.conf configured for VPN clients. I now need to assign a certain IP address to a VPN client if ...
0
votes
0
answers
2k
views
How to do port forwarding for VPN server
Let say my workplace public IP is 111.222.111.222. And I have a pc inside this network, and the computer ip is 10.0.0.60. I installed a SFTP server inside this pc. And in my router, I do port ...
6
votes
3
answers
9k
views
are github`s IP Addresses changed?
I had an issue today where my deployment on my application servers couldn't be completed due to connection problems with github.
I noticed that when I perform a DNS lookup of github.com using ...
2
votes
1
answer
366
views
VXLAN format details
Learning about VXLAN I found in a document:
...VTEP1 then adds a VXLAN header
that contains the VNI to the Ethernet frame, encapsulates the frame in
a Layer 3 UDP packet, and routes the packet ...
2
votes
2
answers
2k
views
How to forbid forwarding packets to private network addresses via interface
On my server, I have a default route to interface eth0. It has public internet address and faces ISP network. I have packet forwarding enabled, and few local interfaces/bridges with private 10.x.x.x ...
1
vote
0
answers
657
views
Websocket and CDN
I have an application which replies on both http and websocket: it is hosted outside the company server farm.
This application is used both via browser/websocket and, through http, from applications ...
1
vote
0
answers
943
views
“Server DNS address could not be found, ERR_NAME_NOT_RESOLVED” but site IS online…
One of the websites we host through Flywheel was giving my team (we all work at the same location) this error:
This site can’t be reached
server DNS address could not be found.
ERR_NAME_NOT_RESOLVED
...
0
votes
0
answers
193
views
Differentiating between OpenVPN clients using the same certificates
I have a relatively large subset of OpenVPN clients, populating the virtual network of 10.131.0.0/16. These clients are fairly similar in setup, and therefore use the same certificate.
Is there ...
-1
votes
2
answers
2k
views
Use IP Address to access another machine on local network but inside VPN [closed]
Here's my scenario.
Within my Comcast home network, there are two devices, A and B.
A is logged into a corporate VPN through cisco anyconnect.
However, from B's point of view, A's ip address doesn'...
0
votes
3
answers
995
views
Command to Ping All a Host's NICs
We have numerous laptops here which have two adjacent DHCP reservations, one for the wired interface, and the next for the wireless. This allows simpler firewall rules by using (e.g.) /28 subnets for ...
0
votes
1
answer
5k
views
How do I add RADIUS clients to Windows NPS without a known IP or DNS?
When trying to add a RADIUS client to Windows NPS, it REQUIRES an IP address. What if this IP address is known? i.e. using cloud based WAPs with WPA Enterprise authentication? i.e. CloudTrax, ...
0
votes
1
answer
286
views
How do I allow access to a web server on an ISP that shares one IP address among all customers?
I'm a customer of a wireless ISP that shares one WAN IP address among all customers. If any of the ISP's clients log on to whatismyip.com, they will see the exact same IP address, which will look ...
0
votes
1
answer
3k
views
Connect by SSH to a certain device knowing public and private IP addresses? [closed]
I want to connect to a computer which is always on at home from anywhere.
Suppose my router has the static public IP of 1.2.3.4 and a netmask of 255.255.255.0.
As far as I'm concerned, every ...
0
votes
1
answer
2k
views
Azure Ubuntu VM Cannot Bind IP (public)?
I just started trying out an Ubuntu 16.04 VM on Azure. A node.js app requires listening to a port 3000 on the network interface assigned with the public IP address so remote clients can connect to it ...
0
votes
1
answer
45
views
using VPN IP Address
I use FotreClient to VPN to my company
Previously I was getting same IP address as i am in the company
after few changes to the server and upgrading ForteClient now when I VPN to the company I still ...
0
votes
1
answer
582
views
Graylog v1.1.1: Editing source IP Address to reflect the IP inside a time stamp
I wonder if you can help with the following query?
I have a client (Centos 7) server (IP 1.1.1.1) in my office that sends its logs to a Centos 7 Syslog server (IP address 1.1.1.2). The syslog server ...
0
votes
1
answer
1k
views
Add IP range to Ubuntu 16.04 server
I'm trying to add IP range to eth0 interface on Ubuntu 16.04 server.
Following this solution I've changed the configuration to this:
# This file describes the network interfaces available on your ...