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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How restrict is an Asp .Net Web App with ipSecurity enabled?

The IT department of my company refused to host an ASP .Net Web App on our intranet. For security reasons that would be the best solution. Right now I'm considering other options. One of those is to ...
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4answers
97 views

How to identify a company's public network address range?

Which tools or websites can I use to identify a company's public network address range(s)?
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45 views

How does add-on for the Firefox with a custom proxy server prevents info from Google?

I would like to know how does add-on for the Firefox web browser with a custom proxy server prevent Google from collecting information about your browsing? Does it prevent also from your internet ...
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1answer
77 views

The problem I have with wikipedia showing IP addresses to the world? [on hold]

I went on wikipedia, then went to the edit history of an articles I edited. To my surprise, my IP address, along with other people's IP addresses are on the articles edit history page. Why would ...
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0answers
53 views

How is VPN used hide an IP address? [closed]

Actually I want to know how VPN hides ip, that is used for anonymity,just like the proxy
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9answers
12k views

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
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Linux responds to ARP requests for other interfaces - could this be a security vulnerability?

Linux responds to ARP requests on all interfaces by default. To explain, say you have this setup: Client 1 ---> [eth1] server [eth0] <--- Client 2 And the server's eth1 IP is 192.168.1.1 and ...
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3answers
114 views

How can I find an unauthorized/unknown proxy on my home network?

I recently started receiving an error while trying to stream netflix that I'm using a proxy. Exactly this error code here: https://help.netflix.com/en/node/277?ba=GSButtonClick&q= My problem is ...
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37 views

Track phone 4 months ago [closed]

A person was on 4g internet 4 months ago and registrated on a website called pornhub. This person is now being traced thriugh the ip address. Is it possible to track this person down? Is there ...
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and give mecan you give me best, full tutorial of IP hijacking? [closed]

I don t about ip hijacking , or call is BGP hijacking. i search google not found any tutorial. please give me best tutorial about ip hijacking. make sure it clearest for understand. and make for me a ...
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IPSec Host-to-Host VPN (RedHat) needs IP Forwarding?

We would like to build a Host-to-Host IPSec VPN (both RedHat Linux). Is it really mandatory to activate IP Forwarding, which is by default deactivated because of our security policy (/etc/sysctl.conf ...
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174 views

How to (further) ensure SSH security?

I set up my Linux Ubuntu machine as an SSH server through no-ip.com and it works great. Recently I discovered the command, sudo lastb -ad -F -w which outputs a log of the most recent failed SSH ...
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Beginner > Medium > Advanced Books/Guides/Tutorials on TCP/IP [closed]

Long time web developer looking to get into infosec. Was hoping on guidance on material from a beginners stance on TCP/IP and hopefully "networks". I realise the massive generalisation I'm making but ...
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1answer
57 views

What other attacks can be deployed using IP spoofing other than DoS(and DDoS) attacks ?

I want to know the other attacks which are associated with IP spoofing because, we're trying to implement Source Address Validation (SAVA) and wanted to where else can Source Address validation ...
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1answer
53 views

IP Address Is A Guid-Like String [closed]

When I get my IP address from Google, in most cases, it's a number like NNN.NNN.NNN.NNN (sometimes fewer than 3 Ns). It always is in that format. I noticed on this new wifi that my IP address is a ...
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2answers
213 views

How was The Pirate Bay datacenter kept hidden?

How were The Pirate Bay's servers kept hidden for so long? You would think that it would be easy finding the servers that so many DNS servers are pointing to. Tracing the chain to the main datacenter ...
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2answers
357 views

Port forwarding with 0.0.0.0, any threat?

I set up on our company's firewall (fortigate100d) a port forwarding to one of our Internal services. As we don't have a static public IP I used 0.0.0.0 as an external IP so the remote users can ...
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288 views

How can I detect real location of the user through their IP address?

There were many ways to detect the user's IP, for instance we could get it through a single click link or through any other medium of communication where we could get the user's IP. But the tedious ...
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1answer
77 views

Using a single number instead of an IP address or a DNS name, which are concrete uses? [closed]

My question: I have read that using the single number equivalent (called the "binary equivalent" by the author) of the IP address instead of the actual IP address or the domain name can be used "to ...
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1answer
43 views

Little bit confusing with nmap scan

I started MySQL with this command service mysql start and it worked pretty well. So: Using the netstat command, I found 127.0.0.1:3306 was in listening state, this is the MySQL service. So I did a ...
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1answer
57 views

Are there any statistics about packet filtering to prevent IP spoofing on the internet?

DDoS attacks via spoofed DNS(sec) are daily news for the last few years, but packet filtering should prevent IP spoofing on the internet. I tried (as an exercise) to spoof a packet on my VPS and on ...
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2answers
196 views

Should i use peer block to better secure my computer?

Should i be using peer block to secure my computer or is there a better way to accomplish the same task? I dont file share, my curiosity of peer block came from my research of security of my ...
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1answer
53 views

How do IP addresses leak information about whether they are a home client or not?

Websites such as hackforums.net, amongst others, are able to detect if you're using a proxy or VPN just by looking at your IP address and block you if you are doing so. I have never experienced any ...
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38 views

How am I identifiable when connecting to a site and is it possible to be anonymous? [duplicate]

When I visit a website, they get information about me such as IP address, country etc. What are other ways/other information with that they can identify me/my connection? How can I change/mask this ...
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4answers
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How was (is?) the ping of death attack possible with IPv4?

While reading about Internet Protocol, I found myself reading about ping of death attacks: the thing that attracted my curiosity was the fact that these attacks could ever work! I mean, why wasn't ...
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2answers
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DNS IP address auto reset

I have a unofficial Windows and i noticed that my internet connection gets reset. By taking a closer look at it, i found that the DNS server address is set to an IP in China. Any reason why this ...
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1answer
180 views

Spoofing `localhost` to connect to a server that only accepts connections from localhost

I have been wondering whether it is possible or not to spoof localhost so that when a connection is made the remote server can be tricked into thinking the connections are coming from localhost. For ...
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1answer
55 views

Is IPv4 header checksum required? [closed]

Resources online say that UDP checksum is optional and can be all zeros if unused. Does the same go for IPv4 header checksum? Or is that absolutely required i.e. must be correct all the time? Based ...
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71 views

Does IP Spoofing mean using a proxy?

As said in question, does ip spoofing mean that someone uses a proxy, thereby he/she appears as different ip in the internet world?
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How to find the ip address of a wifi router while I have it's MAC address?

I have a wifi scanner which shows me the MAC addresses of the wifi routers nearby. It displays SSIDs in one column and MAC addresses in another column. I want to know the ip address of the router. ...
5
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1answer
90 views

Domain redirecting to my site without permission

I noticed that a domain that I don't own or know has been redirected to my site without my permission and has been affecting my SEO. I was able to block some of it by adding the following to the ...
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0answers
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Getting an image from an IP camera [closed]

I'm looking at this camera in order to take static pictures. This site showed me that it its probably possible, but the documentation for the camera doesn't seem to mention this ability. I'm planning ...
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1answer
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mailto email headers trace IP

So I'm working on a defamation case. So I will make a little overview of what is going on. The person we are trying to trace is using a site like kijiji. Tomorrow I am heading to the so said kijiji ...
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2answers
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Are there trackers that work even for people who are using extensions like Privacy Badger? [closed]

If so, what are they and how do they work? (This is within the context of a blog. I do not have access to the server).
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1answer
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IP address spoofing on internet

On a local network, an attacker can craft a custom IP packet with a fake source IP address and send it to a host. I know that the attacker will not receive a response, but there are still attacks for ...
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BitTorrent: how do cracked files get blocked and why is blocking some torrents unsuccessful/inefficient?

Not sure if this is a good question for this site, but suppose someone needs to find a torrent which contains a crack (perhaps one delivered from Hong Kong where it is legal to distrubute such ...
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2answers
270 views

How should I block unwanted domain names? [duplicate]

I have noticed that someone pointed his domain to my dedicated IP address and now my website can be viewed using his domain name @ example.com . This can hurt my SE Traffic and SEO in many ways. How ...
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1answer
92 views

What is this IP? [closed]

Hi all I'm seeing this IP on Avast's network security search: 25.0.0.1. Is this IP local? Modem root IP is 192.168.1.1 . I search this IP it's saying this IP in England. What does it means?
2
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1answer
72 views

Opening remote MySQL database to office IP address at default MySQL port risks?

I read a few questions regarding this topic that were pretty informative, but still wanted to pose my particular case. My company wants to put our data in the MySQL tables we have through our web ...
5
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1answer
285 views

How do I stop my IP from being resolved through my Skype?

I recently discovered that someone found out my current IP info via Skype among other information. People can do this via a thing called Skype resolvers. However nothing I do so far seems to work. I ...
4
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1answer
102 views

Building a project on ARM Cortex-M, anything I can do to keep IP secure? Dealing with Chinese knockoffs and sick of it

Chinese have decided to ripoff a PIC product I make. Switching to ARM for other reasons anyhow, mainly that Microchip is a joke, either STM32 or NXP LPC, exact chip is open still. There are sites ...
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2answers
107 views

Is it possible for a website, by knowing the public IP only, to detect the exact smartphone device I'm using?

If with the same smartphone device I surf to one website (each time with a different IP, different SIM card and no saved cookies or cache), is it possile to detect that I'm using the same device? If ...
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2answers
104 views

Unencrypted FTP to transfer encrypted data - okay if IP-restricted?

If unencrypted FTP over the public internet is the only file transfer option for a particular situation, what security concerns are applicable assuming: The data being transferred is strongly ...
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1answer
117 views

How important is split-horizon DNS?

Split DNS returns different results depending on the source IP. It's commonly promoted as significant security measure for internal resources, for limiting enumeration and discovery. I've had many ...
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2answers
203 views

My IP address switched suddenly and then switched back

Sometimes I look at the login history of my blog account (a Tumblr blog) to make sure no one else is logging in (because I have private posts that I want to keep private). Even though today I ...
2
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1answer
149 views

Webrtc privacy issues?

I've been reading about WebRTC, and I'm interested in using it for a drawing web application that uses real-time collaboration. However, as I understand, WebRTC communication requires all parties ...
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2answers
101 views

Is encryption possible for simplex (one-directional) TCP/IP, and if so, how?

As explained in the TCP/IP Guide, it is possible to configure TCP/IP to operate in simplex mode and this mode is utilized, among other things, in communication from satellites. One consideration with ...
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137 views

How to see all incoming and outgoing traffic of other nodes while on a LAN?

I've got two computers. A & B. While sitting on the computer A how can I see the incoming and outgoing traffic of computer B? Or can I? Note: Please try to answer in a non-technical language as ...
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Options to protect an outbound initiated connection IP?

Consider a service that has 3 separate organizations in a SaaS model. The end user(#1) connects to the first provider(#2) and then initiates a function from within the #2 that connects directly to ...
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882 views

Is it Feasible to Block Connections That Windows 10 Uses to Push/Pull? - ie: Phone Home, Watchers, Monitors, Onedrive, Cortana, Bing, Shadyness, Etc?

Even with all the privacy, sync, and p2p settings off, using an offline account, I don't feel safe using Windows 10 for a business. I would like to restrict its ability to communicate to Microsoft (or ...