Questions tagged [ip]
IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.
2,851
questions
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Why does my Sonos speaker have my dad's name as it's hostname? [closed]
I ran nmap on my local network and noticed an IP address I didnt see listed under devices on my Unifi Network contral panel.
Nmap scan report for Davids-iPhone.localdomain (192.168.1.***)
Host is up (...
-2
votes
0
answers
36
views
How to limit IP addresses for RDP connection out?
I would like to limit IP addresses I am able to connect to from my server.
I didn't find any helpful ideas, I just found steps for setting scope for firewall rule "Remote desktop - User mode"...
0
votes
0
answers
16
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getting error in azure ip configuration
I bought a centos virtual machine from Azure and installed plesk in it, I got this error when trying to define a license for my plesk,
"This license belongs to the IP address "20.1x.10x.x1 (...
0
votes
0
answers
19
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IPREV check failing on multiple ipv6 addresses
I'm using a Raspberry Pi 5b running Ubuntu to host a Postfix and Dovecot mailserver from my home. After setting up various sender authentication mechanisms on the server eg. SPF, DKIM and DMARC - and ...
0
votes
0
answers
36
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Setting the same secondary public IP on multiple servers
The question concerns floating public IP's. I'm trying to set up a failover mechanism in the simplest way possible. Are there any hidden downsides to configuring the same secondary static public IP on ...
- 101
0
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2
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88
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Change netmask subnet on server due to reduced IP range allocation
I am running a few Ubuntu 22.04 servers, each with one IPv4 address configured.
Currently with a /24 network allocation, the datacenter requested some IP's back, and now I am left with a /28, which is ...
- 3
0
votes
1
answer
13k
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curl: (28) Failed to connect to X.X.X.X port 80: Connection timed out
I'm getting this error:
curl: (28) Failed to connect to X.X.X.X port 80: Connection timed out
When I run this:
curl X.X.X.X
I'm curling a specific IP address and it fails on both port 80 and 443. I ...
- 101
0
votes
2
answers
38
views
Exclude local sub-net (local IP ranges)
In my company's VPN app we have a disable-able feature which excludes below List of non-web-site IP-address ranges from being routed into the VPN server.
This allows local-net Apps to continue working ...
- 101
1
vote
0
answers
88
views
How Linux kernel selects the source IP of outgoing data packets?
I have multiple IP addresses assigned to a network interface, each corresponding to a different outbound IP.
:~# curl --interface 112.73.59.255 ip.sb
157.119.73.25
Using the above command, I ...
- 19
-1
votes
1
answer
217
views
Sending email with postfix on a specific IP address fails. Error 81126 with Gmail
Recently, I started to receive errors from Gmail:
host gmail-smtp-in.l.google.com[142.250.110.27] said:
550-5.7.25 [X.X.X.X] The IP address sending this message does not have
a 550-5.7.25 PTR record ...
- 109
0
votes
1
answer
151
views
Which ip is chosen as source ip when sending a multicast packet on a specific interface with multiple ip addresses?
I am trying to send a multicast packet on a network interface with multiple host ip addresses(lets say ips A and B). How can I specify the source ip field of said multicast packet to the host ip that ...
-1
votes
1
answer
177
views
How to block unrecognized hostnames in .htaccess (A Domain Name I Don't Recognize Is Redirecting To My Site)
I'm using Dedicated IP on a shared linux server... At first, I saw that an unfamiliar hostname displayed my own website like a mirror. I scanned the A records of this site to investigate what was ...
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3
votes
1
answer
156
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Why do calls from our Google Cloud Function deployed in europe-west6 (Zürich) originate from an US located IP address?
We have a Google Cloud Function deployed in europe-west6 (Zürich), which makes HTTP calls to an API. In our server logs these HTTP calls originate from the IP address 35.203.247.36, which is showing ...
google-cloud-platform
0
votes
1
answer
116
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Convert IPv6 from the compressed/short format to expanded format
When I execute the command ip address show my server shows hundreds of IPv6 that I have assigned to it. It works great, however the leading and trailing zeros are omitted from the IP addresses, and ...
- 316
0
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2
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73
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How to separate two IP Pools for the single LAN network
I want to create two IP pools in my private network. I want to do this so that the IP cameras in my network are separated and the data devices(PC's, AP's, IP Phones) are separated. But I'm doing all ...
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2
answers
78
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Should we use the LAN IP or the public IP for bind settings such as A records, etc.?
I'm a newcomer to working with bind, and a while ago, I purchased a static IP from an ISP. I used bind to bring up a domain, and now it's working without any issues.
For example: the LAN network IP ...
0
votes
0
answers
169
views
Creating onlink route via bridged adapter unexpected behavior
I am trying to create an onlink connection between a Windows host and a Linux vm guest in VirtualBox using a bridged network adapter. The IP on the guest 10.x.x.x. The IP on the host is 192.x.x.x.
I ...
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0
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1
answer
43
views
Is SLAAC generation affected by non 64 bit size network prefix?
I have enabled all the parameters needed for the generation of SLAAC, and I am obtaining router advertisement, but the network prefix in the router advertisement is /52 and not /64. The system is not ...
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2
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160
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I have a whole ipv6 range /32 for my application. I want to use all of it [closed]
The Problem
I know how to add block to interface. But I really don't know how to use specific address dynamically.
What I want
For example:
I have a block fe80::/32 for my application.
I will let my ...
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0
votes
2
answers
659
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How to force a server to return my IP address in IPv4 and not IPv6?
Scenario
I have a tiny PHP script on a server that echoes the IP address of any client reaching it so the address can be added to the cpanel MySQL remote hosts table via the API. I call this script ...
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1
vote
2
answers
221
views
How to create a static IP for pods in OpenShift?
I have an application that needs to get data from a mainframe using FTP.
Each MF account is connected to a specific IP, whenever I try to connect from the pod I am connecting through a different ip ...
Gabriel H
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0
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22
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Blocking WhatsApp traffic from a specific Country [duplicate]
How can a country block all WhatsApp traffic from a specific country?
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1
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81
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Locked server because of IP spoofing
I have hetzner server. Inside this server there is Docker service which inside creates a few containers. Inside this containers I create vpn connections with openvpn. After connection I make some ...
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1
answer
64
views
How does real server, direct return server (DRS), reply to client if a load balancer (LB) uses port address translation (PAT)?
Direct Return Server overview:
The DRS allows real servers to directly reply to a client without going through load balancer (LB). The LB ip (VIP) is configured as a loopback (localhost) ip for the ...
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0
votes
1
answer
285
views
Display real client IP and not proxy IP with NGINX/NextCloud/PHP
I run a Nextcloud/PHP server through proxy Nginx.
Based on official documentation, I write my own Nginx configuration below (I only display https part because I think that http part is out of scope).
...
0
votes
2
answers
166
views
Subnet mask for 192.168.1.7/30
I want to create two IP addresses, 192.168.1.0/30
and 192.168.1.5.
Adding the first IP for the router port returns this error "Bad mask /30 for address 192.168.1.7":
Router>en
Router#conf ...
0
votes
1
answer
309
views
Netplan - add secondary IP address and assign label
I saw the same question here, but I can't find it anymore. How can I add secondary IP address and assign a label to it via netplan?
I have this netplan config:
# This is the network config written by '...
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1
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836
views
RTNETLINK answers: Cannot assign requested address
161: ovs_bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1
link/ether 00:11:32:xx:xx:xx brd ff:ff:ff:ff:ff:ff
inet 192.168.0.20/24 brd 192.168....
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votes
1
answer
40
views
apache redirects to local IP on virtual machine
I'm having a problem with my apache setup.
I'm using a Proxmox server with multiple virtual machines and only one public IP.
Apache runs on the Proxmox host and forwards the requests to the virtual ...
2
votes
1
answer
81
views
What is the meaning/cause of this extra entry in the output of `ip address` when another device connects to the network?
I was recently trying to set up an EspressIf Border Router for my network. After flashing the device and letting it boot, a single-machine Kubernetes host on my network restarted all of its pods (!).
...
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2
votes
1
answer
502
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Changing Subnet-mask
I am working at a school and recently there has been more and more devices that are not getting internet due to dhcp table being full. Pool size of our ip addresses is set to 242, but there are more ...
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0
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35
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When I create a bridge and make my ethernet port the bridge's master, what device does the kernel use for sending and receiveing
If I create a bridge and set its master to my ethernet port, how does the kernel send and receive packets?
# Create the bridge
ip link add name br0 type bridge
ip link set dev br0 up
# Make eno1 the ...
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0
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0
answers
49
views
How to Set Up a Server to Route Local and Global Requests to Different Web Servers (Server1 and Server2)
I have 2 Servers (Server1 & Server2) where is each one should have a web application on its own
and I have a centralized server (for example DNS Server)
The Centralized server receives a URL ...
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0
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0
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180
views
converting ip to netplan
I'm trying to convert a set of ip commands to a netplan configuration. I haven't had any luck so far, and I'm not sure why.
My script for creating the bridge is:
# Create the bridge
ip link add name ...
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0
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0
answers
414
views
Why are my DNS query responses from Technitium failing to make it back to my kubernetes container?
I've explored every nook and cranny I can imagine, and I can't figure out what's going wrong.
I've got a k3s setup on my server where I'm hosting technitium in hostNetwork mode. Technitium is ...
- 1
0
votes
0
answers
167
views
Proxmox LXC Networking with public IP
I have a bare-metal Proxmox server running with two public IPs. The initial configuration has already been done, and the containers are running with a NAT and a private network.
I currently have 2 ...
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1
answer
213
views
How to change domains network route to custom IP when curl?
On Linux I do curl to api.binance.com website and it gives me very long ms latency 0.177s, although the server is located just near binance servers.
# curl -o /dev/null -s -w 'Total: %{time_total}s\n' ...
- 97
0
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1
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182
views
How to mirror traffic and remove duplicate at destination
I would like to send same trafic over two vpns (udp), to the same server (ubuntu 22.04 with two different WAN interfaces).
/-WAN1-> VPN1 client-\
App-server <-> ...
0
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1
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167
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Point-to-point network between three servers [closed]
I have a three servers, each of which has two network ports. I want to connect these servers using point-to-point connections without using a switch.
Here is a diagram of what the physical connections ...
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6
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2
answers
1k
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Can a gateway use the network address, or can the network address be anything other than the first number in that subnet range?
We were sent the following gateway info from our ISP:
gateway: XXX.XXX.XXX.8 /29
I am Xing out the first three octets for privacy purposes because they will remain the same in a /29 network, and we ...
- 61
0
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0
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243
views
serverside fetch request timeout when request are to an external domain which has the same IP as origin domain
I'm currently running a SvelteKit app within a container which connects to an API running within aother container. Everything is connecting & going through locally using the container's internal ...
0
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0
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75
views
ip address inet 127.0.0.1 changed unwillingly to 172.27.28.124 (Ubuntu 20.10 without netplan)
Below you can se the address 172.27.28.124 being used for lo.
However the address was a few hours ago 127.0.0.1, this is the good value. This should not be changed.
Could you please advice on how to ...
- 113
0
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0
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1k
views
Dockerized Nginx Reverse Proxy - Real IP
I have following problem. I have a docker compose setup which spins up a frontend service using Nuxt3 and a backend API based on golang.This two containers are exposed via an Nginx reverse proxy ...
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0
votes
1
answer
78
views
Change DHCP range and tcpip connections
I want to change the dynamic range of my DHCP server for a network e.g. it is at the moment from 192.168.0.2 to 192.168.0.100 I want to move it from 192.168.0.101 to 192.168.0.200 but I don't want to ...
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0
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372
views
Can't see udp packets with nc command, works with tcpdump
I'm trying to capture UDP data using the nc (netcat) command but it doesn't output anything. What options/parameters do I need to pass to the nc command to get the output?
tcpdump does show the UDP ...
-1
votes
1
answer
190
views
Assigning static WAN IPs
My ISP gave me a /27 of IPs. Basically, they gave me the following information.
Network: 1.2.3.64/27
Gateway: 1.2.3.65
IP Range: 1.2.3.66-94
Netmask: 255.255.255.224
To deploy this, I want to give ...
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1
vote
0
answers
68
views
How can I see the IPs of the computers that queried my Azure OpenAI resource via the Azure OpenAI API?
I created several Azure OpenAI resources in my Azure account. I deployed GPT models in each of the Azure OpenAI resources. I access them via the Azure OpenAI API.
How can I see the IPs of the ...
- 1,194
0
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1
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55
views
requests from different web sites are egressing from the routing src ip not assigned ip
I have dedicated server from OVH, that has 40 ip addresses on three routes.
ip route show
default via x.y.z.254 dev eno0
a.b.c.0/24 dev eno0 proto kernel scope link src a.b.c.161
x.y.b.0/24 dev eno0 ...
0
votes
0
answers
206
views
After setting manual ip address with network manager cli, ssh connection closed and no longer accessible
Context
I have been trying to set my docker containers to each use a separate ip address, rather than opening multiple ports on the same ip. My system (Debian Bullseye) uses Network Manager to manage ...
0
votes
1
answer
69
views
"Destination Port Unreachable" only on secondary IP of VM
An vmware VM is assigned two IPs. We can only ping one of the two IPs from VMs on the same network.
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen ...
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