Questions tagged [ip]
The IP (internet protocol) is a protocol for transmitting data over packets ("datagrams"). It is the primary protocol of the Internet. "IP" may also refer to an IP address, the numerical address assigned to an IP-capable device.
2,801
questions
0
votes
1
answer
433
views
add generic/dynamic route via "ip route add" on a linux machine
I am configuring a raspberry pi to work as a wireguard VPN router/firewall. The client will connect to the raspi via WLAN (hostapd), the raspi itself is connected to the ISPs router via LAN, and ...
- 101
0
votes
0
answers
785
views
Port 80 and port 443 open for two IP addresses
I have Asus RT-AC86U router and IP addresses:
One IP address is for Home Assistant in a VirtualBox.
The other IP address is for Nextcloud on Raspberry Pi 4.
I need to open ports 443 and 80 for both ...
0
votes
1
answer
56
views
Static IP for a VM
I've an existing network with multiple components. DHCP server is setup on router with range 192.168.0.11-254/24, addresses below are static IPs set on the devices directly. The setup works great so ...
- 101
0
votes
5
answers
1k
views
What's the point of having MAC address at all, if we are still communicating via private IP address, even if we are on the same LAN?
I am new to computer networking. I understand the benefit of layering in network protocols and the "separation between link layer and IP layer". When back in the 90s there were multiple ...
0
votes
0
answers
212
views
Every second an unknown MAC address sends an ARP probe
I just inherited a network and found something I can't say I've seen before.
About every second (sometimes longer, sometimes shorter) a MAC address that I can't find anything about sends an ARP probe ...
- 1
0
votes
1
answer
89
views
How do I redirect all the IP addresses going to 185.38.31.85 to 185.38.31.82 on my Windows machine?
I tried modifying the /etc/hosts file with the following entry but it doesn't work. I am on Windows 10. I would like to redirect the ones below to go to 82
185.38.31.83 185.38.31.82
...84 185....
- 171
1
vote
0
answers
403
views
Destination Host Unreachable While Ping between 2 VMs
I'm trying to create a configuration of 2 VMs located on the same hypervisor, to each VM I attached virtIO interface from the hypervisor by editing the XML file of each VM.
I created the VMs and I got ...
4
votes
1
answer
366
views
How to give device on modem’s subnet a second IP on the routers subnet?
I’m new to network stuff so please excuse me if I miss something obvious
I have a modem with the subnet/DCHP 192.168.1.x and a device on it with the local IP 192.168.1.66. This device acts as a server ...
- 181
5
votes
1
answer
5k
views
What is the difference between IPv6 addresses :: and ::1?
Maybe this is a silly question but sometimes I see IPv6 :: to mean the local host, and sometimes I see ::1. Occasionally, using one vs. the other seems to be the difference between something working ...
- 10.8k
0
votes
3
answers
73
views
What type of router do I need to get computers among different ip ranges to communicate?
For a LAN - with only one router - currently all the computers can communicate among them through the classic/default 192.168.1.x range - it mostly through wifi - furthermore the router offers 2 ports ...
- 341
0
votes
2
answers
190
views
Migrating a hosted Web-Server to a home-based sever (inlcuding Domain Name and SSL)
Up to now I was using a hosted server with a static IP address, and own SSL certificate and an own domain.
My server hosting company has provided me with an interface, in which I entered some entries ...
- 101
0
votes
3
answers
1k
views
is there a way to tell if a windows PC is online if I know its IP address?
Is there a way to check if a remote Windows PC (not working as a server, just a personal PC) is online on the internet if I know its IP address?
0
votes
1
answer
90
views
Linux virtual machine not working with XAMPP, Vsftpd and NAT
I am trying to make a Linux Mint virtual machine with XAMPP and Vsftpd.
I am using Windows 11 Hyper-v Manager as virtualization software.
The problem is that when I try to watch my virtual machine's ...
- 3
0
votes
1
answer
161
views
modem set with class b ip but devices can't ping eachother
I'm mainly a programmer but I've got quite interested in networking lately and I've started to tinker with my home network a bit.
I was trying to set my spare modem to test changes before rolling them ...
- 1
0
votes
1
answer
351
views
How do websites track users by IP when most user use internet behind NAT?
On a home network, the IP address we get is private IP, and IP address returned by whatismyipaddress.com is IP address of the ISP. Our routers acts as a NAT device, and changes the network packet's ...
- 481
16
votes
6
answers
8k
views
Why don't we have a usable IP address in 127.0.0.0?
From theory, each part of an IP address is a number between 0 to 255 (256 usable slots in total).
But why is 0 not used in any IP addresses in their 4th part and they always start from 1 in IP ...
- 633
0
votes
0
answers
44
views
IP configuration problems with two Unifi APs with same SSID?
So recently I installed two Unifi APs in my house, one upstairs and one downstairs. They're working fine mainly, but I'm running into a curious problem with some of my devices. If I am downstairs, I ...
- 113
0
votes
1
answer
310
views
Linux network by serial port
I need help to configure a serial port (/dev/ttyS1 or /dev/ttyUSB0 is the same) to communicate vs other hosts via IP (without modem). Some years ago it was possible ma I don't remember how.
Anyone ...
0
votes
0
answers
50
views
Router sendind to DDNS the gateway ip not the router ip
I have a router TP-LINK model TL-WR949N v.6 connected by PPPoE in the WAN port. I tried to register a Dynamic DNS in the router and the router connected normally to my NO-IP DDNS. But the IP of the ...
- 101
0
votes
3
answers
528
views
List the IP addresses that my PC is connected to - in a readable format
I'm trying to search the IP addresses that my PC is connected to, but I don't recognize these & search shows nothing.
I'm looking into all my connections, so I ran netstat -a and I don't recognize ...
3
votes
1
answer
1k
views
Why does ip/port forwarding not working correctly?
My modem|router model is : TP-LINK TD-W8961ND adsl2+ modem router
This is my modem panel page
cgn ip address is 100.104.5.98
public ip address is 86.57.91.250
I config nat ip forwarding as follows :...
- 33
0
votes
3
answers
839
views
I use Team Viewer to remotely boot, connect to and use my server PC. How does that work?
Specifically, how does it know where to connect given that I have dynamic IP on that server? Whenever I want to connect to it through any other app, I have to change the IP weekly or so, but ...
- 101
-1
votes
1
answer
235
views
Is the network address of the DHCP offer, the IP of the interface that requests it?
Suppose the DHCP offer is 118.112.200.14 / 24, which is acknowledged, what is the IP that the interface chooses as its own. I would think it is 118.112.200.0, the network address after applying the ...
- 131
0
votes
0
answers
2k
views
Wifi and Lan on same subnet?
Currently I have a pfsense router/switch that is wired to a wifi hubspot (the router is not wifi enabled). Is there a way to set this up so that all network devices remain on the routers subnet of 192....
- 1
0
votes
0
answers
2k
views
Scan for subnets on a LAN
This is a fairly basic question. Is there a way to scan for subnets or all devices on a network? Using nmap -sn 192.168.1.1 returns only devices on 192.168.1.X. I am trying to scan for subnets such as ...
- 1
0
votes
0
answers
157
views
Route Domain through vpn doesn't work
I have an openvpn server at home.
I want to route a domain over my vpn. The domain has the same ip add. as the vpn server.(My home ip)
When i add: route add 193.80.102.178 MASK 255.255.255.255 10.8.0....
0
votes
2
answers
8k
views
Setting down and up a working interface with ip command causes it to stop working
I'm running Debian 11 and using the CLI, when bringing down and up a working interface with ip command (doing no changes at all on it's parameters) it stops working.
Steps that I follow:
Boot the ...
1
vote
0
answers
187
views
When I put the Static IP I lose internet connection [closed]
I'm facing a problem we have several places that work by vpn from cisco and I can ping from this place to another with my static IP but I lose the internet connection and when i put the automatic ...
- 11
0
votes
0
answers
461
views
My computer is likely blocking my access to an IP Address on my local network. What is the best way to troubleshoot the block?
On my Win10 computer, I have Windows Defender and MalwareBytes running. Also on my network, I have a raspberry pi running octopi for my 3d printer. I can interact with octopi through a webpage which ...
- 33
0
votes
2
answers
2k
views
What is the best practice for assigning static IP addresses? [closed]
In my scenario, I would be assigning IP addresses to security cameras.
I am wondering if I should assign a static IP address from the device itself, or have a static entry on my DHCP server with their ...
- 336
0
votes
0
answers
118
views
Routing from OpenVPN client to main router: How?
My Pi/OpenVPN settings:
IPv4 address for tun0: 10.8.0.1
IPv4 address for eth0: 192.168.222.20
IPv4 address of router: 192.168.222.1
The OpenVPN client (smartphone) needs to see the router for a ...
- 387
0
votes
1
answer
194
views
Make a remote host have a local IP address with ARP capability(Steam Link)
Currently I have two subnets in the 10.0.0.0/16, which are 10.40.20.0/24, let's say that's A and 10.32.80.0/24, B.
My PC is in the subnet A and what I'm going to do is use Steam Link, Oculus Air Link ...
- 1
0
votes
0
answers
22
views
Install 2 websites on my server static box adress (IPV4)
I have an ipv4 address that is linked to my internet provider box ( e.g. xxx.xxx.xxx.xxx) and I have installed a site on this website. So when I reach the address xxx.xxx.xxx.xxx I land on this ...
- 1
0
votes
0
answers
529
views
Unable to ping google.com
On a new CentOS VM, I have setup 10.x.x.x IP. I want to enable IPv4/IPv6 on this VM
But ping google.com does not work, what are the things to look for?
[root@vm1 ~]# ping google.com
PING google.com(...
- 1,119
0
votes
0
answers
27
views
how to change my IP address to another country? [duplicate]
I need to access that website which is allowed to be accessed from Syria.
I have tried to change my IP address to make my device as Syrian device. however my attempt went wrong.
here are my steps:
I ...
2
votes
1
answer
880
views
When I set up port forwarding on my home router, why does connecting to a local server via the public IP show the router's address as the client IP?
I'm trying to understand how NAT works on a basic level within my home network (just a consumer Google Fiber router with no custom configuration other than the port forwarding I'm about to describe). ...
-1
votes
1
answer
122
views
Is it possible to get internal ip through external inside private network?
The doubt is in the title, as simple as that. Is it possible to get the internal IP through the external IP inside my network?
Scenario
I am building a whatsapp bot that will assist the employees in ...
- 113
13
votes
2
answers
6k
views
Is the public IPv4 address and default gateway for my home router owned by IANA?
In the web interface for my home wireless router, I can see the following information:
For the public IPv4 address, I see:
https://myip.ms/info/whois/10.206.55.182
And for the Default Gateway I see:
...
- 550
0
votes
0
answers
1k
views
Generic browser access to IP ICSEE
ICSEE Camera on ebay
Is there anyway to access the video on this camera without having that infernal ActiveX installed on my computer? I am strictly a Linux user, so I have to fire up a windows ...
- 1
0
votes
0
answers
72
views
Device IP is not visible for one particular client
In my home network, I have 2 routers. Lets call them master and slave.
Master is the one which is receiving internet connection from WAN.
Slave is "bridged" through WIFI / BSSID. From this ...
- 101
0
votes
2
answers
102
views
What's the point of a default gateway?
Maybe there's something I'm misunderstanding fundamentally, but this just isn't clicking.
I deal with networks that look like (Router > Firewall > Switch > Hosts) with a few port forwarding ...
- 1
3
votes
2
answers
7k
views
Unable to setup port-forwarding through Dynamic DNS (DDNS)
I am trying to enable the ability to connect to my router from outside my network through a Dynamic DNS and I am stuck on port forwarding.
I have setup a Dynamic DNS through my router with url X.ddns....
- 133
0
votes
2
answers
524
views
A wrongly configured network
There are allegedly six mistakes in the following network:
I was able to identify four:
Host A4's IP address 192.168.10.40 is subnet A's broadcast address.
Host A5's IP address 192.168.10.39 is ...
- 105
0
votes
1
answer
23
views
Port ownership when accessing an Internet address
Let's say we're accessing the google.com:443 server. Port 443 is used here, is it an internal port that is issued by the operating system to the google server, or is it the port of the router that, ...
0
votes
0
answers
503
views
Remote access to private networks with overlapping IP address space on OpenVPN
Good day,
I am currently trying to setup a system where we have a VPN connection to number of nodes with devices on their LAN having same IP address connecting to the server which is a big no-no and ...
- 1
0
votes
1
answer
77
views
Given the IP address 22.181.0.0/21, create subnets starting from this address
Given the IP address, 22.181.0.0/21, subnet the network for the following offices, based on the number of devices for them (The first two columns are given. I've calculated third, fourth and fifth ...
- 121
1
vote
1
answer
2k
views
QEMU: How to obtain host address from Ubuntu guest?
When using UTM on a Mac with a Ubuntu guest in it, I need to obtain the host IP address (of my Mac) from the guest to mount its file system by sshfs (or any other mount).
It runs UTM based on QEMU.
I ...
- 101
1
vote
1
answer
3k
views
wireshark bad udp length > ip payload length
I have a custom made (not by me) imaging device here. It connects to a computer via ethernet cable. The companying application software guides the user in the process of acquiring an image.
So far so ...
- 604
0
votes
0
answers
79
views
Send private client IP using SNAT to my php web server
I have the next topology
Topology
The clients have a private ip 192.168.0.x
And I have two NAT servers
The server 1 has an interface with the gateway for the clients with 192.168.1.254
and has an ...
0
votes
2
answers
2k
views
How does ISP know when to change the dynamic IP?
As I understand, ISP uses DHCP protocol to give out IPs from some pool. Every time they give the IP via DHCP it has a lease time. At the end of a lease time, a router can receive the same IP - but it ...
- 161