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Questions tagged [ip]

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

IP (Internet Protocol) is a protocol which encapsulates data for transit across the Internet and encodes its source and destination addresses, among other parameters. It implements the network layer (layer 3) of the OSI model.

Questions related to IP (addressing, routing, and protocol issues) fall under this tag; questions merely containing an IP address do not.

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is there a way on Linux to set DNS servers using a cmd line?

I use a script that creates multiple network interfaces with IP adresses. An example of commands used by the script: ip addr flush eth0 ip addr flush eth1 ip addr add 192.168.1.10 dev eth0 route add default gw 192.168.1.1 eth0 ip addr add…
expertsearch
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How can I use multiple NICs on Windows Server 2008 host with one static IP?

I have Windows Server 2008 running on Dell PowerEdge 1425 SC. The unit has two NICs and I want to use them in a clustered mode for maximum efficiency (throughput) to avoid bottlenecks. Do I need to use third party tools or does windows have any…
Santosh Chandavaram
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Access remote network with OpenVPN server

I am currently trying to configure OpenVPN to access our company network remotely. I have a question: when I configure the "client.ovpn" file, what should I put as Ip in this parameter: remote xx.xx.xx.xx 1194 ? I can put the public address of the…
hamza youssouf
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How to calculate a working "AllowedIPs" for Wireguard on Android?

I am using Android to connect to my WireGuard server through the public IP address of the host network. The LAN is using addresses 192.168.0.1-255. I would like the client to connect through the VPN only to addresses with in the LAN and directly…
uncovery
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How to block RFC-4193 for IPv6?

For IPv4 I have a rule that blocks the VPNs to access the local addresses like this: :PRIVATE_ADDRS_FILTER - [0:0] -A PRIVATE_ADDRS_FILTER -d 10.0.0.0/8 -j DROP -A PRIVATE_ADDRS_FILTER -d 172.16.0.0/12 -j DROP -A PRIVATE_ADDRS_FILTER -d…
Houman
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Linux Kernel IP Forward activated, firewalld is bypassed?

On a Linux Centos7, I have some traffic that is routed with static routes from one interface to another. I did notice that with firewalld activated, both interfaces added in a zone, and nothing allowed in this zone, all the traffic is still routed…
Carbon69
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http server connectivity puzzle

I have been seeing some strange connection issue in the production environment. The setup has two IBM Http Server's (IHS) and a network IP load-balancer in front of them (round-robin). One instance the system is working fine, the next requests stop…
jpmartins
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Flushing IP table doesn’t flush NAT

When I execute sudo iptables -F,my iptable rules for the nat table are not flushed. Why is this the case? What does the above command do? I believe there are three tables: filter, nat, and mangle. I don’t think any of these tables are affected by…
average_coder25
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Are their public IP ranges which don't belong to any country?

I've been working on project and we use IP geo-location using an API to identify user's country. The legacy code has an edge case when there is no country information for a particular IP. I have been planning to remove this, since from…
CodePanda
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How to configure and use all the IPs given by my provider?

Need assistance on how to use all the Ips given from my hosting provider. Currently i have 5 IPs that is routable and can be used on any circumstances. I wanted to make a new environment on my dedicated server such as VPS inside. Eventough ive able…
Newbie
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AWS EC2 Elastic IP vs Public DNS Hostname?

What is a better approach for a webserver using EC2: to use its public DNS hostname as a CNAME record, or to attach an Elastic IP to it and use it with an A record? I suppose using the (elastic ip) A record is faster, but I seen a youtube tutorial…
FLUSHER
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Is there any way to allow a group of ip in the certain range to access my website?(Nginx)

Suppose, I want to allow access to my project for the IP falling between 192.168.1.1 and 192.168.1.40. Nginx example: stream { #... server { listen 12345; deny 192.168.1.2; allow …
Atom Store
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In a recursive DNA query procedure, if a local DNS server needs to query root DNS servers, how does it know/get their IP addresses?

I am taking a computer networks class, and was wondering how a local DNS server knows the root DNS servers' IP addresses when querying them. I am assuming that since this is the root server, maybe there is a pre-provided root server address list for…
Newbie123
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Ubuntu 20.04 forward traffic between two interfaces (wlan0 and eth0) using NetworkManager

Running Ubuntu 20.04 on a Pi with netplan disabled and using NetworkManager only. Have wlan0 running in AP mode and an ethernet cable connected to the Pi. I want connections made to the wifi AP on wlan0 to be able to access the internet via eth0. I…
Chimera
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Having static IP allocated, still have to use DHCP, otherwise it does not work. Why?

I have a static IP address allocated by my Internet provider. However, support told me I have to use DHCP on my network interface, otherwise it may not work (and it actually does only work with DHCP). IP allocated with DHCP is always the same. When…
ololoepepe
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