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]

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

0
votes
0answers
14 views

Problems with emails after redirecting subdomain to another server [on hold]

I want to add a subdomain which redirects to another server, but im having problems with emails from the original server after I do the redirection. I want to keep both of the servers, one for the ...
0
votes
0answers
24 views

Add printers to cloud print by ip address

I am trying to add all the printers in my school to Google Cloud Print so students with chromebooks can print to them. The printers are on the network by ip address, with addresses like room1.printer....
-2
votes
0answers
20 views

Can't access locally hosted web server on same network [closed]

I have set up a Raspberry Pi as a web server on my local network. Everything has mostly been fine for 2 years until today when I went to check the website and found I am unable to access it from ...
0
votes
1answer
69 views

Get IPv6 route for VM

is there any option to get something like this for IPv6 (inet6 or -6): ip route get 8.8.8.8 Result: 8.8.8.8 via 94.**.***.1 dev ens3 src 94.**.**.112 uid 0 cache Where I can get the local IPv6 ...
0
votes
0answers
17 views

How to specify outbound IP when running Teamspeak 3 server within a Docker container?

I have a Teamspeak 3 server Docker container on my server. My server has several IPs assigned to the one interface eth0. 198.51.100.17 Main IP 198.51.100.18 Second additional IP 198.51.100.19 ...
1
vote
1answer
45 views

how can I know since when has a BGP prefix been allocated?

I am a bit confused. I would like to know since when a current ASN (and its corresponding prefixes) have been in place. When I look at the example at team-cymru (http://www.team-cymru.com/IP-ASN-...
-1
votes
1answer
17 views

What is the command to know IP that accessing our server with Iptables

May I know what is the command that I should use to get the output of all IP & its frequent while they are accessing my server? I need this command to know the frequency of IP that access my ...
0
votes
1answer
28 views

How to run a program in the context of a VRF in Linux

I have created a VRF and I have added interfaces and routes to my VRF. My VRF is as shown below. My VRF is names wan1: [root@host ~]# ip route list vrf wan1 default via 12.12.12.12 dev enp1s0.4025 ...
0
votes
1answer
51 views

IP Routing Issues OpenVpn

I have two servers in the same datacentre, running Ubuntu 16 Server A: 10.12.96.5 Server B: 10.12.96.4 Server A, is running OPENVPN Server. When I connect to server A using SSH, I can PING server B....
0
votes
1answer
64 views

Ubuntu defaults to IPv6, should default to IPv4

Ubuntu 16.04.5 with kernel 4.4 used to work as intended: IPv4 is default. Since changing to kernel (hwe) 4.15, it uses IPv6 as default. It has IPv6 available via Tunnelbroker, broadcasted by the ...
0
votes
0answers
47 views

Is the Inside Global IP address the same as the Public IP Address? [NAT TABLES, Public IP, Private IP, Inside Global Address]

Is the Inside Global IP address the same as the Public IP address? Private IP addresses assigned to each device are translated using NAT to a Public address. Is that public address the same as the ...
0
votes
1answer
60 views

How to check IP range in nginx location?

I have nginx.conf and need to check the client request IP $remote_addr in IPs range or not? My IP range means 123.132.123.15 to 123.132.123.50 (15 - 50). And valid IPs need include some specific IPs. ...
0
votes
1answer
40 views

What is NAT port of an IP address?

I received a request from police to provide all available data of one of the users of my dating website. So, I sent them IP address, connection times, email address. Then I got another email with a ...
-1
votes
1answer
39 views

Adding specific route to my IP camera through eth0 wont work, but adding a range will [closed]

I have an IP camera configured to always use the IP 192.168.1.37 connected through ethernet to my raspberry pi. I'm also connected to the raspberry pi, through wifi. If I do: pi@raspberrypi:~ $ sudo ...
0
votes
1answer
38 views

How a dynamic dns provider update my IP for the subdomain he gave me? [closed]

No-ip and dyndns, for example, give me a subdomain which will point to my latest IP address. However, how do they update the IP for this subdomain? One method would be to ask the registar for this ...
4
votes
1answer
409 views

DNS CNAME Resolution - which IP would be returned?

I saw this example of a CNAME record, but I don‘t know what IP would be returned and couldn‘t find an answer. I‘m looking for the IP of pc2.an.example.com and the mail server of an.example.com Zone ...
-1
votes
3answers
110 views

My web hosting provider is providing 4 nameservers, which do I use to to point my domain?

I host my domain at GoDaddy, and purchased hosting from another website. The new website I'm using for hosting is providing 4 nameservers, while in GoDaddy it only provides 2 text fields to enter ...
0
votes
1answer
32 views

can I still map an IP address to its ASN number when the last octet is masked?

I have a database of IP addresses whose last octet has been masked IpAnonymizer.mask_ip("8.8.4.4") # => "8.8.4.0" Can I still use map these IPs to their respective Autonomous Numbers or the ...
0
votes
0answers
35 views

How to connect two different networks hosted on 2 different NICs

I have a Windows 2012 R2 server which has 4 NICs. Two of these NICs are connected to seperate private networks(not connected to internet). NIC3 is connected to 192.168.137.1 (Subnet mask: 255.255.255....
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
2answers
97 views

How does MS know which public IP addresses are dynamically assigned [duplicate]

I came across this article which says that Microsoft is blocking SMTP from dynamically allocated public IP addresses. https://support.microsoft.com/en-us/help/886692/microsoft-com-now-blocks-...
0
votes
2answers
52 views

How to access host in LAN using alternate IP address?

I have a server in LAN (192.168.1.0/24) with static IP address 192.168.1.100, now I would like all service on this server to be accessible using 192.168.100.100 for hosts in the same LAN(192.168.1.0/...
0
votes
0answers
22 views

Create a VPN across diffrent public networks

I have a bunch of 10 iDrac servers, distributed globally across different datacenters with public IPs. There are no firewalls for these servers. How can I bring them into a single network, so that all ...
0
votes
1answer
27 views

windows 10 ip route not working for modem usb 3G

i have 2 interfaces: 1 .- Cable ethernet 2 .- USB modem 3G, The problem is i cannot work with both at same time, routing seems not to be working for me... I cannot nake this work: 0.0.0.0 ...
0
votes
1answer
21 views

Link Local Addressing - Communication with Routable Addresses

As per RFC 3927 it states that There will be cases when devices with a configured Link-Local address will need to communicate with a device with a routable address configured on the same physical ...
0
votes
1answer
34 views

how to identify the organization behind a given IP address?

I have a large dataframe as follows (fake data below): ip 192.168.1.1 192.168.1.2 192.168.1.3 192.168.1.4 192.168.1.5 Given the large quantity of ip adresses in my data, I would like to merge ...
-3
votes
1answer
38 views

Finding the first and the last address for a given IP address [duplicate]

It is small question, but I can't figure out these things. Please help me in simply way how to do this. Consider the given ip address is 198.51.100.39/28. From this how can I found the first ,last ...
-3
votes
1answer
48 views

AWS VPC: Reserve an external IP for VPN

I need to fill in a document from a customer company. They need to know an external IP address for the VPN. We are using AWS VPCs but I can't find the option to reserve IP addresses for later use or ...
2
votes
1answer
82 views

Redirect traffic from one IP address

A have a root server with 2 static IP address which are both connected to one interface (eth0 and eth0:1). Now I need to redirect all incoming traffic from one IP address to a VM on the same PC. The ...
0
votes
2answers
28 views

Domain name is opening the website but its IP address shows nginx Not found

My domain name is www.blissedmaths.com. Its IP is 159.89.162.44. while opening through blissedmaths.com, it opens. But IP address not working. Due to that, I am unable to access my droplet via WinSCP (...
0
votes
1answer
294 views

Wireguard VPN Outbound and Inbound

I am trying to setup a Wireguard tunnel so that A uses the IP of B for outbound and inbound traffic (like a proxy, not a std VPN config). Both boxes are Ubuntu 16.04. A is eth0, behind a router with ...
0
votes
0answers
17 views

Debian as TCP-TLS proxy

I would like to use a Debian as tcp to tls proxy. Currently I have: Clients (10.1.10.10/10) > My new Debian TCP/TLS proxy > Remote TLS server On my Debian I do receive all outgoing traffic ...
0
votes
2answers
67 views

iptables not catching packets based on source IP

I'm creating a proxy server on Debian 8, and are trying to do DNAT on incoming packets - which are being forwarded from another server. This is my iptables DNAT rule: iptables -t nat -A PREROUTING -...
0
votes
0answers
40 views

1-1 NAT addressing on a Moxa EDR-810

I've been trying to configure one of these routers for a couple of weeks. I'm new to the configuration of routers, I've only set up 1 before this so its not going too well (Took me 2 weeks just to get ...
0
votes
0answers
21 views

Reroute IP packets based on PostgreSQL IP table

I apologise for the perhaps very open question, but are somewhat lost in best approach to a solution. I would like to be able to reroute (perhaps with DNAT IP:PORT) based on source IP. It would be ...
0
votes
1answer
55 views

How to change ip of azure gateway

How to change frontend ip of Azure Application Gateway? The ip I want to change to exist as a Public Ip resource in azure. In the "Frontend IP configurations" I can see the old IP beeing used. But ...
0
votes
2answers
42 views

IIS 7.5 Domain Restriction working but not IP

We have a web service that we are trying to impose access restrictions on in production. This web service lies on LAN based internal server. It is called from web applications sitting on the same ...
0
votes
0answers
23 views

Cannot connect to my VPN and have client display server IP

This used to work but no longer seems to. Didn't change anything as far as I know. This is the client .ovpn-file: push "redirect-gateway def1" client dev tun proto udp remote myip 1194 float comp-lzo ...
0
votes
0answers
33 views

Public IP not resolving

I have a Debian/Proxmox sever running and trying to add a public IP which is not resolving and im trying to figure out if its a config issue or out IT network infrastructure (which we do not manage) ...
0
votes
0answers
85 views

How to setup ecmp post-up route on centos 7.4?

how can i setup a ECMP postup route in centos 7.4? if i setting up the route directly with the ip command everything works as wanted. Command: ip route add default src 127.0.0.1 scope global ...
0
votes
1answer
35 views

Is it possible to identify a proxy sever (IP & other headers) as the user who originated the request?

Is it possible to identify a proxy sever (IP & other headers) as the user who originated the request? Example 1 (Standard use case): I have a proxy server a.com that proxies all requests to b....
0
votes
2answers
69 views

cannot ping a single device through route

I have the following topology: /- D1 G1 -- G2 < \- D2 G2.eth0 (10.0.0.105) is on the same network as G1.eth1 (10.0.0 network). G1 can ping G2 and visa-versa. D1 and D2 are ...
0
votes
1answer
44 views

Synology Route traffic to Docker

I have: +------+ +-------------+ | +NIC1 (192.168.1.100) <--> Router <--> (192.168.1.2) NIC1 + | | PC | ...
0
votes
1answer
37 views

Can you please explain how to use Floating IPs in an event of downtime?

I recently came across floating IPs in DigitalOcean and I am not really sure I understand how they work. I have assigned one to my droplet. The official documentation says that we can quickly ...
2
votes
1answer
258 views

.htaccess block access when HTTP_HOST is IP (Security)

I have had a lot of attacks on my server. Most start with a vulnerability scan, followed by waves of POST requests. I will soon be implementing Cloudflare (WAF and DDos). This means that a DNS lookup ...
1
vote
3answers
94 views

Trace an Unauthorized IP Scanner within a private network

I ran over a response that stated running an IP/Port scanner (fing) could alert an administrator. I am a curious being and have run about a bajillion unmalicious network scans without any consequence ...
0
votes
1answer
60 views

IPv6 configuration missing in interface config file

When I use ifconfig command I get the following output: eth0 Link encap:Ethernet HWaddr 2C:59:E5:49:54:10 inet addr:172.16.128.132 Bcast:172.16.128.255 Mask:255.255.255.128 ...
27
votes
9answers
6k views

How do I use Linux to find unused IP addresses on my network?

I've got access to two computers (A and B) on a network. Both have got a static IP address with a subnet mask of 255.255.255.128 (I checked that a DHCP server was not being used). I want to configure ...
3
votes
1answer
157 views

systemd bridge for VM + multiple static IPs

I have a Ubuntu 18.04 server with 3 public IPs. The main IP is already preconfigured. I would like to configure IP2 and IP3. IP2 is to be used for a SSL domain and IP3 for a virtual machine (qemu ...
3
votes
3answers
172 views

What happens to DHCP sessions on client devices when the DHCP server breaks down and comes online after an interval?

Scenario: I use DHCP server to authenticate and provide specific services to my device. Everything is working well, my client device has a valid IP address 192.168.0.2 and a QoS service assigned by ...