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.

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Searching for an updated IP/URL Blacklist [on hold]

I need a IP/URL updated blacklist(txt form) for a security program I want to create. I will use it with a honeypot so I would like for it to be updated in order to kill connections that my honeypot ...
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How can I find the origin of an IP address for a relayed IP?

I have an IP address of someone who has stolen from my company, but I'm pretty sure they relayed through another computer. The IP address I have doesn't go to home or business, but to a field in the ...
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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 ...
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What software ISPs (or else) use for DPI? [closed]

I am wondering what type of software or what exact product Internet Service Providers (ISP) all around the world can use for Deep Packet Inspection (DPI) purposes? As i understand DPI, this is a ...
2
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1answer
89 views

How sharing location via web actually works? (It gets my exact house address)

I know that this could be a repeated question, but I'm freaked out right now, Maybe Im old or out of the 2015 technologies, but i just visited this page: http://whatismyipaddress.com. As I know, ...
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36 views

Link(s) between subnet mask, IP address and subnet ID [closed]

I am studying CompTIA Security+ material and am struggling to understand the link(s) between a subnet mask, an IPv4 address and a subnet ID. The question that I'm working on is as follows: Your ...
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111 views

Is Google intercepting my emails? [closed]

I was recently checking my Recent Activity under the "Details" tab inside my Gmail inbox, and I noticed this IP Address, it's not my IP: I proceeded to look up the IP and it's located in Mountain ...
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189 views

Can I collect wireless packets using Wireshark while being connected to the Internet via cable? [migrated]

I am working on a PC which is connected to my router using a LAN cable, and the other computers in my house are connected to my router using WiFi. We are all connected to the same network, so I ...
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Malware / vulnerability that uses or causes malformed IP or TCP Headers

I'm curious if there are any examples of malformed IP or TCP headers (for example, checksums that don't match, reserved bits that aren't zero, or poor header length numbers) used by malware, or that ...
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Is someone reported a video to the fbi, would the IP address be traced? [closed]

Supposedly, if someone were to report a video to the fbi, if anyone watched that video, would their ip address be traced down?
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60 views

Web/search engine spider on local network?

I was setting up a test webserver on my local network earlier, and whilst sorting out the firewall I noticed the following in the log (/var/log/ufw.log - I'm using UFW on Ubuntu 14.04): Jul 9 ...
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Implications of IP Address as Subject Alt Name in certificates

Are there specific known negative security implications of including the IP address of a server as a Subject Alternate Name in the server's certificate?
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Mystery IP address Hijack

I'm working on a customer's new website. To get things up and running quickly, we're maintaining his domain name service and hosting the website on another server. Customer bought the URL name years ...
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2answers
51 views

What IP address is a new email account associated with? [closed]

If records are subpoenaed from google will they reveal internal IP or external IP addresses of a email account? For example if an email address is made and an email is sent using and iPad and home ...
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579 views

Can an attacker “simulate” a private IP address?

I have a SSH server with a rule that does not allow password connections outside the local network. So people already on the local network, either physically or via VPN, are allowed to connect with ...
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27 views

Ghost CMS abnormal access

I have a blog hosted with Ghost CMS. I created a new blog post (say "My New Blog") and correspondingly there was a url generated (mysite.com/mynewblog/) The weird part is that I saw an access to this ...
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Migration from TDM to All IP: any security issues?

My phone operator is slowly abandoning TDM (Time Division Multiplexing) to replace it with IP connections. What are the security risked related to this change? will all the phone line be like in a big ...
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39 views

How to handle a remote office and a client requiring IP Whitelisting?

.NET Developer here, out of my comfort zone on this one. My software company is going remote, where employees can work from home, Starbucks, a Regus office, Spain, anywhere really. One of our ...
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64 views

Is this a security flaw in tor? [duplicate]

I realize this question more belongs on the tor exchange (and i have indeed posted it there) so if you want to vote to close this question I completely understand. But I have noticed that this site it ...
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1answer
47 views

Risky Connection Blocked by McAfee

McAfee has been blocking a connection from a certain IP address (I found the IP Adress to be from Hong Kong). Should I be concerned? McAfee says the program is "SYSTEM". Also if I should be concerned ...
2
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1answer
56 views

Double/Chained VPN - Which IP will be vissible to the VPN providers?

I am currently using a company VPN and use Juniper Network Connect on OS X to connect to this network. I'm interested in using another VPN and set this up at my internet router at home, so all ...
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42 views

What are the risks associated with relying on Mutual SSL & IP Filtering?

We are thinking of implementing Mutual SSL combined with IP Filtering because we are unable to setup a vpn within our external client. What are the risks associated with using Mutual SSL combined with ...
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Faking IP address without being aware of returning response

I read different articles on the subject (Spoofing IP address), someone said: Spoofing an IP is usually better suited to "fire-an-forget" scenarios like DDoS. due to TCP two-way communication ...
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Does GRE Tunneling “really” hide your main IP?

As we all know, setting up a GRE Tunnel is nice to hide your main ip under a dedicated server. My question is, is it really hidden? Is there a way a malicious user could somehow find your main ip ...
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Is the method of hardening the creation of a Cryptographically Generated Address (CGA) called hash extension

CGAs are sha1 hashes truncated to a 59 bit value. Along with a 3 bit security parameter they form a IPv6 address (more precisely the interface identifier). from wikipedia: The Sec parameter ...
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Security implications of static IP? [duplicate]

I need a static IP for a remote shutdown utility with my phone. What are the security implications of setting IP to static? I feel the "attacker knows your IP won't change" argument may be a ...
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47 views

Does firewall count as a subnetwork? [closed]

I need to design a network based on IP 10.1.1.0/24. I have three different subnetworks and a firewall. Does firewall count as a subnetwork? Do I need to assign some IP values to it?
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Is someone able to hack my Facebook account knowing my Dynamic IP, PPPoE and mask?

I was using Facebook today and, after replying politely to someone about how stupid his comment on something was, Mr. John Doe, who I never met before, sent me this message: You wanna get hacked, ...
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How does detecting promiscuous mode using an ARP test work?

I have read that we can detect whether a system is running promiscuous mode by sending out an ARP request with a fake broadcast address e.g FF:FF:FF:FF:FF:FE.This will be blocked by all NIC's ...
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55 views

MITM sniffing packets

I fail to understand how a MITM attack sniffs packets and modifies them.In the case of ARP spoofing although the attacker has spoofed the MAC address of a host, how does he modify it as the IP layer ...
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188 views

What is the importance of an ISP maintaining IP-Assignment logs?

I was reading an article which explained that there is a growing movement to force ISP's to store IP-assignment logs for DHCP connections for longer periods of time in order to fight cyber-crime. ...
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3answers
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Utility to build IP exclusion list? [closed]

Are there any utilities out there that can assist in building an IP exclusion list? Scenario: Recently suffered a brute force attack where 50000 failed login attempts came from a multitude of ...
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Is it safe to publish some internal IP of my company?

Sometimes when asking networking questions on StackExchange I want to publish some output where several internal IP adresses from my company appear (output of traceroute command for example). Since I ...
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Rationale behind hiding originating IP address in emails?

Gmail has been hiding originating IP addresses for quite some time now. Hotmail and Yahoo have started doing this too. Apart from obvious privacy implications of revealing the sender's IP address, is ...
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How can I stop an IP from trying to use my mail server?

I have recently set up my first email server, and I look at the logs in /var/logs/mail.log to see what is happening, I notice this one IP does this multiple times every day for the last so many weeks ...
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How to hack into a remote mysql database?

(Moved from Stack Overflow as other users said it was a security question) I have a mysql database sitting on a remote server. Nothing else, ie no web site using it, no server side scripts etc, ...
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Security benefits to have IP-filter in HttpModule instead of Page-Load in asp.net pipeline?

I'm working on implementing an IP-filter which blocks all requests by machines outside our IP-range. This is for an asp.net project (written in c#). I've read on multiple forums that the safest way ...
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I have been accused of sending porn to my fiance's ex [closed]

I have not, but she says that she has my IP addres, which I know can be spoofed and also can be found out by my email header. What can I do to combat this liar? I have a hotmail account and she has a ...
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65 views

How to fully mask my computer without using tor? [closed]

I want to mask myself and therefore I configured a proxy server. I use debian and squid 2.7. It actually works fine, however, I visited the site whatismyip.com and I can still see that I'm accessing ...
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Do search engines give searcher's IP address to sites that come up in search? [closed]

Ok so for example, I search "stackexchange" and a bunch of pages come up in the search result - of course most of them from this very site, and many other ones talking about stackexchange. Would this ...
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How to get directly to text versions of Google cached pages [closed]

http://navigators.com/cached.html According to the bottom of that site, it seems the easiest way to view websites without giving them your IP is: "Edit the heck out" of google URLs like this: ...
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IP over HTTP GET only

Consider the following scenario: There is a client behind a really strict firewall. There is nearly nothing available to 'connect to the internet'. Just DNS resolution and HTTP/HTTPS (some whitelisted ...
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546 views

IP address, iphone, Snapchat

My child is being accused of doing some improper things via Snapchat, but he swears that he did not do anything, and he is the type of person who probably would not. The only thing the police are ...
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ARP poisoning question

I'm writing a program that detects ARP poiosoning. My question is: How can I b sure my LAN hasn't been poisoned? Yes, I can use my settings and find the IP address of the default gateway and yes I ...
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NMAP Scan- Results Differ

I'm trying to determine a servers IP address via ping and open ports/services by running an NMAP scan. At work, when I ping my website/server, I get a response from 172.16.XX.X If I run an NMAP scan, ...
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512 views

How can I spoof source ip address while making a ping request from windows command prompt? [closed]

I am using ping command to test my website which is running on a local server at the moment.
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State Government website find an IP address?

I had someone use my email address and sign up on a State Government website and register as me. Made a complaint and the autoresponder of the .gov site replied to the email that I allegedly sent. ...
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Making a Judgement on a User's IP Usage

We have a click exchange-type web application that allows users to receive stats boosts within a game. Stats boosts are based off unique IP addresses which poses a problem for users who use proxies or ...
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Does Google hand over captcha IPs to webmasters?

Google gets to know a user's IP when someone enters a captcha even if they are using tor (see http://www.wired.com/2014/12/google-one-click-recaptcha/). So, If I go to a non-google website, such as ...
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Prevent location being exposed through VPN

I use the Astrill VPN service to access websites that my country has blocked. There is nothing sinister going on here. Sites like google and youtube have all been blocked. This VPN service offers ...