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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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Why does RCN route addresses in 10.0.0.0/8 to some public machine?

I have a colleague who uses RCN (no idea if that's relevant). When he runs traceroute on a private IP address like 10.22.32.136, it seems to get routed to some "public" machine. For example, he gets output like: ip-192-168-1-1…
lebolo
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How can I assign a public IP address to each of my devices?

My ISP (plusnet) has given me a block of 8 IP addresses I can use, so each of my devices can have a different public IP address. Unfortunately, they don't offer support on how to do this, I've tried to gather information and so far I've realised I…
Sparlarva
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How often do country IP address ranges change?

How often do country IP address ranges change? I get a lot of notifications about failed login via Wordpress or SSH. It's very hard to ban every single IP address, so I wrote a script to block single IP addresses and IP ranges. But I never reset my…
user3646958
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How to configure VMWare cloned images to get unique IP addresses?

I am configuring an internal build system using Teamcity with VMWare vSphere. Once configured, the build server is supposed to start build agent VMs using vSphere API. I've got to a point where TeamCity build server spins up build agent VMs that I…
oleksii
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Attacker using "single use IPs" to generate large volumes of robotic traffic that is hard to block

Currently there is some wierd traffic on a HTTP server from lots of different IPs. I tried checking against known TOR exit nodes, but there were no matches. They tend to be from countries in South America and Africa. However, none of the IPs are…
A X
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Stop nginx listening on all IPs?

I have 1 main IP, and one secondary IP. The secondary IP is meant for a special Go webserver that listens only on this IP for a reason that is irrelevant to this question. Unfortunately it doesn't work because Nginx decided to listen on all IPs and…
Alasdair
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why is nexthop ip print reversed with the ping command?

This question hit me today while I'm quite used to see it reversed, but actually, why is the nexthop ip noted reversed in the ping command ? PING 10.8.0.8 (10.8.0.8) 56(84) bytes of data. From 10.8.0.1 icmp_seq=1 Redirect Host(New nexthop:…
hl037_
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What is an efficient alternative to iptables for bulk usage?

Suppose I have a list of thousands of ip addresses to block. Right now I know how to iterate through the list and for each one run: iptables -A INPUT -s XX.XX.XX.XX -j DROP But this means I will have to run thousands of processes! How can I do this…
Sean Letendre
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Is it reasonable to embed Cloudfront IP ranges into an NGINX configuration?

I'm using CloudFront as a proxy for my EC2 instance, so all traffic is routed through CloudFront first. The issue is that I also need the original client's IP address for each request to my EC2 instance, so I need to examine the X-Forwarded-For to…
Ryan Peschel
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Ports and Port forwarding

In port forwarding all the ports (extensions of IP’s which altogether create ’the packet’) are associated with IP addresses. When configuring PCP (Port Control Protocol) via router settings- only the port of accesing device you want to open up to…
Nora Kacenova
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Serving HTTP traffic from a controllable IP address / data center

Consider a company that wants to provide HTTP services regionally from a dynamic data center of their choice for a given set of users or IP addresses (e.g. for latency management purposes) under a given domain that they own (e.g. google.com). My…
Josh
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Can the Azure App Service Inbound IP ever change?

We are using "custom domains" in a azure app service. A DNS is pointing to the IP address of the app service listed in -> custom domains -> IP Address. Everything works as expected (y) Here's the question: Can this IP ever change? Should I be…
A. Kay
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IP Route: Prioritize one default route over the other by default

I'm doing a lot of spooky networking shenanigans at work lately, and it's really messing with the routing on my laptop. Sometimes, it'll just decide that my default route now leads into the dev box and will flat out refuse to use my wireless…
Will Nilges
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IP address blocked in Google App Engine firewall rules but still seeing it in logs

I run a Google App Engine app that has a honeypot admin page to distract from the real admin login page. A while ago I started getting repeated emails saying that someone was trying to log in on the honeypot page. I blocked the IP in question, but…
alstr
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WAP Assigns same IP addresses for 2 or more devices occasionally

I am new to being a sysadmin and am still learning so apologies if I say anything incorrect or flat out wrong. Where I work we have a wifi network consisting of several different WAPs that spread the wifi out over the entire building. These WAPS are…
GamerGypps
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