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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.

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2 votes
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Why is IPsec transport mode "vulnerable" for not having integrity of variable fields? Why is this so important?

With IPsec transport mode we CAN'T have integrity of variable fields (eg TTL and checksum). Why is it a problem? Is it? What could be the attack? I think TTL expire or checksum modification (so both ...
allexj's user avatar
  • 21
0 votes
0 answers
54 views

Have I got malicious activity on my home router? [closed]

Just got back from a week away and noticed unusual behaviour on the home wifi. Examples: Partner clicked "unsubscribe" on an email in the gmail app, the link loaded the typical scammy "...
Heartthrob_Rob's user avatar
2 votes
2 answers
138 views

Avoid leaking IP address of my home DNS server

I'm using AdguardHome as a DNS server to filter a lot of stuff. As an upstream DNS, I use a bind server which acts as a local root server (as described at https://localroot.isi.edu). This server is in ...
user24849443's user avatar
0 votes
0 answers
65 views

Using a static ip (Ipv4) residential ISP proxy / IP address for Binance

My situation is the following: I am a novice when it comes to information security Residing in a country other than my home country in Europe I need a way to reliably access Binance.com without ...
swstuff's user avatar
0 votes
0 answers
51 views

Can my VPN hide my IP address so I can test malware? [duplicate]

I heard that VPN could mask your IP address, but is this perfectly secure? I am trying to open up what I suspect to be malware on a VM, and I obviously don’t want it to be sending my real IP address ...
chen's user avatar
  • 1
0 votes
1 answer
152 views

Bypass IP Whitelist Restrictions

I have an internal application that only allow whitelisted IP address to consume the API. I have tried: X-Forwarded-For, X-Originating-IP etc. in the headers. None of them work. However, with header ...
LieberHunter's user avatar
0 votes
2 answers
164 views

How can I access the internet in a way that proves my physical location?

Perhaps the opposite of an information security question: Consider a hypothetical where my associate and I have been accused of being the same person abusing multiple accounts on an online forum. ...
clyf's user avatar
  • 101
0 votes
4 answers
174 views

How to bypass regex block of request?

I was asked the following question at a job interview recently: You need to reach a web server at the IP address 20.21.22.23 via browser using HTTP. Browser checks the IP address and blocks requests ...
S_I's user avatar
  • 1
0 votes
0 answers
241 views

How to perform focused scan of public IP using nmap? [duplicate]

Scanning my router using the private IP address using nmap reveals the open ports: Obtaining the public IP address of the router can be achieved by executing the command: nslookup myip.opendns.com ...
machine_1's user avatar
  • 101
2 votes
2 answers
402 views

website said it logged my ip address and reported me, did it actually?

I clicked a link on twitter and it had nothing on the website and then some text appeared on it that said "your IP address has been logged to the authorities for having CSAM". Can websites ...
johnny sins's user avatar
0 votes
0 answers
21 views

How can iplocation.net know my country if I use a VPN thru Opera Mini on Android? [duplicate]

How can iplocation.net know my country if I use a VPN thru Opera Mini on Android? Accessing myip.com it says "no country". But accessing iplocation.net shows my real city and provider! And a ...
VeganEye's user avatar
2 votes
0 answers
42 views

How to detect if a user tries to access my web service using proxies/vpn? [duplicate]

I believe this question is covered as the problem is straightforward. But, as I am building a web service from scratch, I'd like to have some advice on how to do it better. Let's say my web service ...
Sergei Basharov's user avatar
0 votes
1 answer
191 views

Do I need an IP whitelist on top of a VPN?

My company requires me to access resources through a VPN connection -- specifically, an OpenVPN client configured to require a password plus an authenticator token. But the company also restricts ...
Sasgorilla's user avatar
0 votes
0 answers
91 views

Could a public IP with blocked public inbound/outbound traffic be a risk?

If we have a device that for some reason needs a public IP address and if at the same time the device should only be accessible from within a private network: Could the fact that the public IP of the ...
Moritz Loritz's user avatar
0 votes
0 answers
125 views

What is the easiest and most effective way to filter IP-only accesses?

On MacOS and Windows 11, I’ve repeatedly seen direct IP accesses to *.deploy.static.akamaitechnologies.com domains (discovered via PTR DNS lookups). DNS filters like NextDNS presumably don’t see this ...
Patrick Dark's user avatar
0 votes
0 answers
15 views

Block specific spam ip address to my websites [duplicate]

I have a website. It receives visits from about 50000 different ip addresses a day, I know it does not provide 100% protection, but I am thinking of doing an ip block operation on harmful ip addresses ...
Kadir Çolak's user avatar
1 vote
1 answer
284 views

Can DNS providers know my IP address?

I know how domain name system (DNS) works a bit. But don't know if providers of public DNS like Google or Cloudflare can know my IP address.
user avatar
19 votes
4 answers
9k views

What information can you get with only a private IP address?

I found a private IP address displayed on a video. What can you learn from a private IP address, if anything at all?
Doshik's user avatar
  • 199
0 votes
0 answers
22 views

How do I find out what country did an email originate from? [duplicate]

Out of curiosity I came across some emails in my inbox that I really wanted to know where they where sent from. Not just Google's or Yahoo's service's address, but the actual country the sender was in ...
Hugo Almeida's user avatar
0 votes
1 answer
216 views

Shouldn't IPsec be an application layer protocol since it is "over UDP"?

I am reading about IPsec and am confused of what exactly is "IPsec", is it a network layer protocol, or is it a technology that uses involves multiple protocols? All web searches tell me ...
SamTest's user avatar
  • 715
1 vote
1 answer
226 views

Can my ISP see request data being posted to a website when a DNS leak occurs

From what I understand, the ISP can see the host you're trying to connect to in the event of a DNS leak. But does that mean they can see the data being sent like the requests body? or even headers? Or ...
NotAidan's user avatar
0 votes
0 answers
215 views

Does Google use an IP address to identify a user? [duplicate]

I used Google Search in Chrome incognito mode without logging in to my account, so no cookies were stored. However, somehow I instantly got a bunch of ads relevant to my search on Instagram. There ...
Sogawa-sps's user avatar
0 votes
1 answer
980 views

Can't ping my public IP from external network [closed]

I'm new to networking and I'm trying to scan my external IP from an external network. I first tried finding my public IP from whatismyIP.com. I assumed that my public IP would be my router's IP, but ...
EskimoJones's user avatar
0 votes
0 answers
47 views

Can someone access my computer after I clicked a Grabify link? [duplicate]

I accidentally clicked a grabify link and the person said that he got my IP address, he said that he can see through my camera and spy on my online activity and can take my data and files from my ...
DenzelYoung82312's user avatar
21 votes
2 answers
5k views

Which IP address would be most safe and suitable to use as a placeholder in a live system?

Is there a best practice IP address that is safe to use as a placeholder in a live public system on the Internet? e.g. In a similar capacity, the domain name example.com is reserved and can be safely ...
BadHorsie's user avatar
  • 385
1 vote
0 answers
47 views

How do hackers find the ip address of router or networks they want to hack? [duplicate]

I've heard news of hackers in different countries being able to infiltrate networks in other countries. What I'm wondering is how these hackers find the ip addresses (without the use of phishing) of ...
EskimoJones's user avatar
0 votes
1 answer
783 views

Staying anonymous while using BurpSuite

While testing any site using BurpSuite, if we send any request it will use BurpSuite HTTP "Proxying through BurpSuite" but still we are not fully anonymous, it will still use our original ...
Noob Hunter's user avatar
1 vote
0 answers
1k views

Do ISP's start data retention period after unsubscribing from their service? [closed]

Whenever I go online and read about data retention periods specifically for IP address information like IP assignments and session history, I see data retention periods ranging from 180 days to 12 ...
sailboatgolfer's user avatar
0 votes
0 answers
85 views

Police have seized phone regarding sent emails [duplicate]

The police in UK have my phone. I have sent some emails I shouldn't have to an ex. I have deleted the gmail account they were sent from. The phone police have isn't the one they were sent from. I ...
Julie's user avatar
  • 1
0 votes
2 answers
576 views

Tracking someones location from social media messages

I lack knowledge about IP addresses or how the internet works. Let's assume that after I wrote a message to someone on social media, they just felt the need to track me down within a week, is it ...
maniboy's user avatar
0 votes
0 answers
663 views

UDP Port Scan Attack from a previously used IP address

Yesterday my internet connection is interrupted and I checked the logs. In logs, I saw 2 UDP Port Scan Attack happened a week ago. After a little bit of research, I convinced myself that it is common ...
mzt's user avatar
  • 1
0 votes
0 answers
20 views

IP address from headers (Gmail/outlook mobile app) [duplicate]

My question isn't a duplicate. I know that the IP is leaked in the computer desktop version of outlook. But from I'm able to tell, the mobile version didn't leak it. I need to make sure that I'm right ...
lalachka's user avatar
  • 101
0 votes
1 answer
5k views

I clicked a Grabify link, is my whole life in danger? [duplicate]

I clicked a Grabify link from Discord as I did not know what a Grabify link is. When I found out it was an IP logger, I panicked. And I already tried rebooting my wi-fi but the IP didn't change, and ...
Billy Forter's user avatar
0 votes
1 answer
441 views

Can a simcard's public IP be accessed?

I am in a discussion with someone about IoT devices. We use private IPs for simcards, but the other organisation is using public IPs. I think it is possible for a hacker to access these public IPs to ...
Iot_Engineer's user avatar
0 votes
1 answer
856 views

Can someone spoof its IP address to mine when sending emails?

Can someone spoof its IP address to mine when sending emails? I know we can see the IP address of the sender in the email header. If someone had my IP, can he/she use it to show in email headers? Even ...
Mateus Alberghini's user avatar
2 votes
0 answers
489 views

Why does MS Teams establishing outbound connection towards malicious IP? [closed]

I'm wondering how come an internal "Teams.exe" can make outbound connections to a malicious IP, 132.147.119[.]217 (ISP: ViewQwest Pte Ltd) that was flagged as malicious and also was involved ...
joeBoy69's user avatar
3 votes
1 answer
152 views

How to find out what the subnet is that is attacking me

I have a webserver and mailserver that I use for fun/learning/breaking. There is only one user who should be logging in; me. I notice in the postfix logs and HIDS alerts I get a lot of SASL failures ...
Èl Sea's user avatar
  • 35
2 votes
2 answers
380 views

How can I prevent visitors from exposing their personal IP addresses to my server?

I'm running an Apache server on an Ubuntu EC2 instance for some online friends, but they don't want me to be able to identify them in real-life. The hosted webapps require login, so it'd be easy for ...
Drin's user avatar
  • 23
0 votes
0 answers
833 views

Block all windows system outgoing internet connections but allow LAN on Private and VPN on Public

I have several windows PC connected to my mikrotik. I use basic features: file sharing, playing games with friends on home LAN and want to connect internet only through VPN (openVPN client). But I am ...
owaiera's user avatar
0 votes
2 answers
525 views

Does Protonmail save MAC addresses? [closed]

I received an "automated abuse detection" warning email to my Protonmail account due to bulk sign-ups. Does that mean that all the emails are associated with one another? My brother made a ...
Amjad's user avatar
  • 17
0 votes
1 answer
252 views

How secure is my IP address?

I have a public facing IP address setup at a VM in the Google Cloud Platform. I am wondering, if it is possible as an outsider to take away this public IP, or pretend another computer is this public ...
Christoph Sanders's user avatar
-2 votes
1 answer
88 views

How I can access to home CCTVS form laptop? [closed]

I want to see my CCTV camers at home, when i am not home, but I know the Publick Ip address and NAT address (private addreess) of CCTV registrator. Manifacture of Camers is Hikvision home I am using ...
Artur Luckyanenko's user avatar
1 vote
1 answer
363 views

What does a domain seizure entail?

For context, I have limited knowledge pertaining to computer networks, and the recent seizure of z-library brought up some questions I am unsure of, and I can't seem to find much information online. ...
Andrei Paraschiv's user avatar
2 votes
1 answer
2k views

How to remotely check if SSL 3.0 is enabled on server?

I would like to remotely verify whether SSL 3.0 is running on several servers. Previously, this command: openssl s_client -connect example.com:443 -ssl3 Would have worked but now I am getting the ...
ramenrazumov's user avatar
1 vote
0 answers
85 views

How to access web content protected by network ip? [closed]

I am testing a website that allows content fetch only when you access it from an IP a certain Wi-Fi network. However if you want to access the website from different network, you get the response of {&...
Richardson's user avatar
0 votes
0 answers
27 views

Can someone find out my other websites based on the IP address of one of my websites? [duplicate]

As far as I know, the IP address of any website is detectable by a simple ping test. Say I host several websites on a given webhost with a single IP. If someone finds out the IP of one of my websites, ...
user283460's user avatar
1 vote
1 answer
169 views

How to determine what process accessed the web browser

I received a CrowdStrike Alert where a particular user was using Chrome and the process was connected to the web browser but the user does not know what he did to connect to the malicious IP address ...
timothy's user avatar
  • 11
0 votes
2 answers
151 views

Using IP for one request (one time) protection

I have an endpoint that accepts data as signed PASETO tokens. It has one problem - if someone "cracks" the TLS encryption or this signed token leaks then everyone can use it as long as the ...
Szyszka947's user avatar
1 vote
2 answers
523 views

TCP with IP Spoofing, Is It Really Impossible?

I was reading: IP Spoofing with real IP when TCP 3-way handshake has been made Where the answer says: First of all, every TCP packet has a sequential identifier, which starts at a random position. (...
Rog's user avatar
  • 11
0 votes
2 answers
931 views

Is it possible to get "real" IP from a host machine which is using a SSL-VPN connection?

We'd like to obtain the public IP of a user that connects via SSL VPN, the one that the user would have if he didn't connect that way. But this looks impossible to do, if we use web services like the ...
user2638180's user avatar

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