IT Security Stack Exchange
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Questions tagged [ip]

The Internet Protocol (IP) is the main protocol for sending packets accross the internet. It belongs to the internet layer in the internet protocol suite with the variants IPv4 and IPv6.

The Internet Protocol (IP) is the main protocol for sending packets across the internet. It belongs to the internet layer in the internet protocol suite with the variants IPv4 and IPv6. IP is connectionless which uses IP addresses to deliver packets bridging different networks to the intended host. Additionally to some headers like addresses it usually contains the transport layer information as payload.

More information on Wikipedia.

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Tracing the location of a mobile IP from an email

I'm a TV scriptwriter - and not hugely tech-savvy, so please bear with me... If the police have an email, sent by a suspect over a 3G or 4G network, could they use the IP address (since they know when it was sent) to find out - from the service…
kjh03
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Why is my internal IP address (private) visible from the Internet?

When visiting some websites like http://www.monip.org or http://ip-api.com, I get the following result: Your current IP Address - IP: 197.158.x.x - Internal IP: 192.168.x.x I understand that I can see my public IP address (197.158.x.x).…
Lova Andrian
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DDoS: Why not block originating IP addresses?

I'm a moderator of a major bulletin board. When a baddie shows up, we block their IP address; it works, at least until they find a new one. Why can't a protocol be developed for the world's routers to combat DDoS, whether by IP addresses or message…
vonlost
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Is there any actual security benefit to restricting foreign IP addresses?

I am currently outside the US trying to log in to my health care provider's website and the connection just times out. I reached out to them on Twitter and they told me that as a security measure they block connections from outside of the US and…
Matthew Nichols
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Why do people use IP address bans when IP addresses often change?

Why do people use IP address bans (e.g. to block a malicious user from an internet service) when IP addresses change often? For example, we turn our router off every night so our IP address often changes in the morning. Furthermore, often a simple…
Micheal Johnson
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Can someone steal my IP address and use it as their own?

I am not talking about home networks (like hacking my wifi and using it). Can someone from another geographical location steal my IP address in some way? For example: I am angry with you. -> I want to make you suffer and managed to find your IP…
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Differences between using Tor browser and VPN

I can't quite figure out the differences between using the Tor browser and using a VPN (like concretely proXPN). From what I understand the idea is the same, that they both hide the IP address. The only difference that I can see is that Tor seems…
Thomas
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With IPv6 do we need to use NAT any more?

I'm wondering how to use NAT with IPv6. Seems that you don't even need it any more. So what exactly is the concept behind firewall configurations in IPv6 environments?
JaafarMehrez
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How did the brute-forcers get my IP address so quickly?

This is probably a massive noob question, but Google results aren’t being helpful and I couldn’t find something specific here. I made this server that just hosts IRC, HTTP and SSH for some friends. I have done this sort of thing before, and to my…
Architect
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Can a hacker, that knows my IP address, remotely access accounts I have left logged in on my computer?

I frequently leave accounts logged in on my personal computer because of the immense physical and cryptological barriers a hacker would have to overcome to access my computer. Could a hacker, that knows my IP address and what websites I left logged…
William FitzPatrick
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Is it good practice to ban an IP address if too many login attempts are made from it?

Since an IP address does not necessarily represent a specific device, but probably a whole network/company/etc. does it at all make sense to block an IP address if there is a significant amount of false login tries from it? I was planning to…
Levite
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How do hackers find the IP address of devices?

I've been watching Defcon videos recently (in no way am I a hacker myself) and saw a video of someone demonstrating a security camera hack. For this hack you needed to know the IP address of the camera but there is no obvious way on how to do it.…
Rob Dawson
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Is it a bad idea to bypass login wall for a specified IP address?

I have a website that is available on the public internet. The website requires authenticated login before any of the content can be accessed. I've been asked if I can remove the login wall for users on a single static IP (the organisation's office)…
tommarshall
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Can I change my public IP address to a specific one?

It happens that I participate in a bug hunting program and analyzing the app I realized that there is a particular parameter that is very important for access control and that only changes with the IP address. Anyway, the question here is if I can…
Carlos Bello
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While working from home, is it a bad idea to give the company you work for your IP address?

I work from home. Why would a company I am about to do some work for ask for my IP address? What would they need it for? Should I be worried? Thanks
Niall
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