Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange
Join us in building a kind, collaborative learning community via our updated Code of Conduct.

Questions tagged [ip-address]

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

0
votes
0answers
11 views

Configure VPS to accept FTP connections via Filezilla client using IP address

Currently I connect to my VPS using Filezilla client where I enter as hostname www.mysite.com. However, if I replace that with my VPS's IP address, I can't connect. I assume it has something to do ...
0
votes
1answer
92 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
0answers
46 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 ...
0
votes
1answer
54 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
0answers
28 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 ...
0
votes
1answer
64 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 ...
1
vote
1answer
261 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
0answers
51 views

Why can't I find the IP address of mongodb.net?

I am using MongoDB Atlas to host my database. I want all traffic from site destined for Mongo Atlas to use a NAT Gateway with a static IP address, so that in Mongo Atlas I can whitelist that IP. The ...
0
votes
0answers
19 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 ...
8
votes
7answers
2k 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 ...
2
votes
7answers
409 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
0answers
68 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, ...
160
votes
10answers
29k 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
1answer
99 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
0answers
145 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
0answers
385 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 ...
4
votes
3answers
1k 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
1answer
105 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 ...
0
votes
2answers
69 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
0answers
185 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
0answers
666 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. ...
0
votes
0answers
56 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
2answers
170 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
3answers
104 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
1answer
466 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
0answers
23 views

IP internet service rejects API request from a single address

I am looking for several days now for an answer to following issue. I am having a web based API request, which works find on all of the tested internet connections (about more than 10) EXCEPT one. I ...
0
votes
1answer
56 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
1answer
279 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
1answer
395 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
1answer
29 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
1answer
206 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
1answer
600 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 ...
0
votes
4answers
2k views

Running a bash script as root on boot

i have a script that calculate an ip address (using gateway address) than change, the script work when i launch it manually with sudo sudo ./changework.sh i want this script to run during bootup ...
1
vote
1answer
68 views

In Windows what's the difference between logging in via IP Address and by File Share?

I have two users on my QNAP NAS, one with admin privileges and one with read only. If I log into the file share in Windows File Explorer via \\192.168.1.xxx I enter my credentials for read only and ...
-4
votes
2answers
721 views

Is it possible to have multiple A records for mail pointing to same IP Address?

I was wondering whether we can point to same IP address for multiple A mail records. Two days ago, I bought a domain (test1.com) and a dedicated server to host SmarterMail, let's say the server's IP ...
0
votes
0answers
48 views

Server responds to an IP address which is not assigned

I have a rather out-of-date debian server, which has only one assigned IP address - 10.1.1.2 - this address is assigned manually in /etc/network/interfaces However, I just discovered that the server ...
0
votes
2answers
78 views

eth0 config and VLANs - comments please

I came across this network config on an Ubuntu server and wondered about the reasoning behind the doubled VLAN config. True to form, there's no documentation and the engineers who have worked on the ...
-2
votes
2answers
99 views

Connecting to headless machine via crossover

I'm trying to connect to a headless machine over a crossover cable. The headless machine gets it's address via dhcp. What is the easiest way to give the headless machine an ip address so I can connect ...
0
votes
1answer
230 views

Exporting NFS volume to public IP

I need to have access to a shared volume from my server. I talked with my sysadmins and I knew that this volume could not be exported to a private IP address due to technical reasons. My server and ...
1
vote
1answer
77 views

IP Address vs Name Server

I had an issue where we needed to change the IP address for a particular domain. This domain is externally controlled but the web hosting is provided by myself. However, the external company that ...
-4
votes
1answer
42 views

colocation of a server

Hi I currently host my site we a hosting provider and that is going well, however they have just been sold and I want to use a server (either Poweredge 6850 or Poweredge 2950) which will be put inside ...
0
votes
2answers
245 views

Networking Issue with DHCP and Vlans

We've had this issue for a while now and im at my whits end. Bit of background, we have a simple setup, we have a main vlan for the office, then a few seperate ones for development, testing and ...
-1
votes
1answer
134 views

Creating IP ranges from forwarding table [closed]

I am working through problems for practice and have been given: Consider a datagram network using 8-bit host addresses. Suppose a router uses longest prefix matching and has the following forwarding ...
-1
votes
1answer
44 views

How to know if 2 ethernet ports of the same modem are separated?

I have a Digi TransPort WR family of 3G/4G cellular routers with 2 ethernet ports, digi told me that the ethernet ports are separated but i want to know if they are not in the same network it's a ...
0
votes
1answer
461 views

PowerShell credSSP session using IP

I need to open a Powershell remote session using credSSP authentication from server A to B. However, server A cannot resolve name of B. CredSSP is enabled on A to pass credentials (in "Allow ...
-1
votes
1answer
2k views

Docker renaming network interfaces

I am trying to rename the network interfaces inside a docker container. Right now they are eth0, eth1, eth2, ect and I would like them to have different names. I know how to do it in Ubuntu, by ...
-1
votes
2answers
128 views

check website through IP address [duplicate]

I hosted multiple websites on a single VPS server, with single IP address when I entered IP address in as url it shows default website page that fine but i hosted multiple website in a single server ...
0
votes
2answers
49 views

Can I borrow 15 bits for specific netmask in class B [closed]

I read that I can't borrow 15 bits to create a specific netmask from a default class B netmask. According to my calculation, borrowing 15 bits gives : specific netmask = 255.255.255.254 Why did they ...
-1
votes
1answer
95 views

server ip gives blank page with no error, ftp, other domain pointing to server works well

Just new user in dedicated server, I installed debian 8 and many packages (Apache2, proftpd, mariadb, bind9, ...). Everything was working well for 2 weeks. My server IP adress was pointing to debian ...
0
votes
2answers
926 views

How to show dhcp server's ip address for every VLAN on cisco switch?

Is there a way on Cisco layer 3 switches to show the DHCP server's IP address for every VLAN?