Questions tagged [isp]

Questions about the security of ISPs (Internet Service Providers), ISP managed devices, ISP communications etc.

Filter by
Sorted by
Tagged with
-2
votes
0answers
67 views

Multiple websites sharing the same IP [closed]

If multiple websites with different domains share the same IP, how can the ISP know exactly website I am trying to access? Does this mean that every time I access example.com the DNS query is ...
10
votes
2answers
3k views

What does my ISP see if I change my DNS server?

I have an interesting question and I really want to get an answer to this. What does my ISP see if I change my DNS server and I use an HTTPS connection? Firstly, when I use my ISP's DNS server: So, I ...
0
votes
1answer
103 views

Can ISP deanonymize Telegram public channel creators?

In a Telegram public channel, all messages are public, send by the channel creators and contain a timestamp. Suppose I am an ISP. Can I analyse the traffic of all my clients and decide if they are ...
35
votes
3answers
5k views

Can ISPs replace a website's HTML/JavaScript/HTTP headers with something else?

It seems to me that "yes, they can". As I saw it in some countries, entering adult content will simply give a warning message that the site is blocked. Some places even block Facebook ...
0
votes
1answer
95 views

Abilities of my ISP to stop me from browsing [closed]

I visited a football site yesterday to stream a match online, and since then my connection is unstable. Like, I get connected at times and loses at times. I was over at my friends' and did the same ...
0
votes
0answers
71 views

Will anyone figure out who I am if I am downloading torrent while logged in facebook in my browser?

I have protonvpn. I am downloading torrents. I don't want anyone to know that I am downloading torrents. I am also logged in to Facebook in my browser. So Facebook knows my VPN IP. And my ISP knows ...
1
vote
2answers
113 views

Can the Police trace an internal user which is behind a shared IP?

Can the Police or any other lawful body obtain information about a criminal from the ISP knowing such things as the shared IP (the NAT, I believe?), timestamps, visited websites etc.?
0
votes
1answer
99 views

How can my ISP block certain websites if I'm using a VPN?

Even when I'm using a VPN (ExpressVPN), I still can't access certain websites. But when I'm using Tor browser it loads them without a problem. So this must mean that my ISP somehow knows I'm trying ...
6
votes
2answers
785 views

Can government track VPN traffic if it has control on both ISP and website server?

Let's say I access a website called example.com with VPN. Here's the flow: me → ISP → VPN → example.com Do typical VPN providers use the same IP address to receive data from ISP and send data to the ...
1
vote
2answers
66 views

Security: Multiple VPN users

Let's assume there is a service provider that hosts some services behind a firewall. Two different companies connect to the network of the service provider via VPN. (To use the services that aren't ...
33
votes
7answers
9k views

If I'm currently on a website and disable my VPN, is my ISP or the web server immediately aware of the change or does a page refresh have to occur?

For example: I'm browsing my favorite website with my favorite VPN enabled. I disable my VPN while I'm still on a page of the website. I haven't clicked any links yet, I haven't went back to the ...
0
votes
2answers
95 views

Will carrier servers allow the ISP to see anything I'm doing even on a VPN?

AFAIK, if the connection to the VPN server is properly set up, the ISP is not able to see any of the traffic. Nevertheless, I just found a worrying comment to this blog post: https://www.stealth-...
3
votes
2answers
140 views

How does RusNet block websites with so many separate ISPs?

How does the Russian Federation enforce the blocking of websites for end users? I know that ISPs have a database of DNS records that will redirect the user to a corresponding IP address for a given ...
1
vote
1answer
62 views

Basic Auth exposed to ISP/DNS?

Would someone using basic authentication in a URL such as https://username:password@example.com have their credentials be visible to their ISP or DNS?
14
votes
2answers
4k views

Does Tor help us to prevent ISP tracking?

If Tor is able to hide the IP address of the machine and make us anonymous, then does it prevent the ISP from tracking us?
0
votes
1answer
82 views

Is it safe to whitelist my public ip to a server, even I am behind CGNAT?

I have a few VPS and Databases in GCP, I can access them by whitelisting my IP, but just few months ago my ISP rollout their CGNAT and I was affected. As far as I know CGNAT, allow multiple subscriber ...
0
votes
1answer
208 views

Can my isp see the (non-https) websites I visit if I use browser VPN extension?

Can my isp see the (non-https) websites I visit if I use browser VPN extension? Chrome notices non-secure connection for them but I use browser based VPN extension and different country (VPN server).
0
votes
1answer
199 views

What can my ISP see regarding my VPN tunnel? [duplicate]

I use the free version of proton VPN because it has such a nice interface. From my understanding, when I connect to one of their VPNs located in the US, my information passes through an encrypted ...
4
votes
2answers
1k views

Is it possible to mac-spoof Xfinity Wireless?

Background Comcast/Xfinity operates various wireless hotspots across the US, accessed via the SSID xfinitywifi through the many wireless access points shown on https://hotspots.wifi.xfinity.com/ ...
1
vote
1answer
979 views

What Data Does an ISP Store? [closed]

Sorry for being so general, but I know my ISP logs connections to others and all. I'm just questioning whether they keep any physical data that was over a HTTPS connection. Learned about how ISPs also ...
0
votes
2answers
148 views

How I can hide from my ISP that I have created a hotspot?

I am using manjaro Linux, And create a Hotspot with create_ap script I spoof my mobile and laptop to have the same MAC address What can I do so they can not detect I am using my mobile connected to ...
4
votes
2answers
254 views

how is my ISP able to inject into this webpage?

Lately I've noticed that pages I go to on http sometimes have a large banner at the top from my ISP. What's weird is when I refresh the pages I get the https version of the site and the banner is not ...
1
vote
1answer
108 views

Is using a VPN like changing your ISP?

I am asking this question from a security perspective (not privacy) I have read that using a vpn can prevent hackers including your isp (who could be working for the government) from doing mitm ...
2
votes
3answers
585 views

ISP provider does not giving permission to change my router password

We have got a new connection from a local ISP provider, the provider supplied a router and other few devices, then he has configured the device with a password, but he does not allow us to reset or ...
1
vote
2answers
865 views

How an ISP can detect if someone having a WhatsApp call or video call? without detecting or blocking the rest of the app [duplicate]

I am asking the questions because of the latest news: https://www.bbc.com/news/world-middle-east-50095448 I wonder how the ISP can detect the use of call and video calls, without detecting or ...
0
votes
1answer
236 views

How does DoH protect against ISP tracking?

Seems like a modern ISP would already be equipped with some basic level of packet inspection to identify outgoing TCP connections even if just for doing traffic shaping or carrier-grade NAT, and ...
1
vote
0answers
116 views

I run a web crawler on my localhost computer, can my ISP detects that? [closed]

I'm using an Internet plan of 100GB bandwidth monthly from my ISP, and I made a simple web crawler for fun and run it on my personal computer 24/7. The crawler is consuming all of the bandwidth, and I ...
30
votes
10answers
8k views

Received email from ISP saying one of my devices has malware

My dad received a suspicious email from our ISP (mtnl.net.in). The email was from noreply@mtnl.net.in and it had our user ID (I masked it as xxxxxxxx@a) in the email so it must have come from the ISP ...
1
vote
1answer
82 views

How can I know if the cyber-protection offered by my ISP is worth the extra cost? [closed]

My ISP offers a "cyber protection" service at an extra cost. They say it "identifies and blocks privacy attacks, credit-card scams, identity thefts and hacker attacks against computers connected to ...
0
votes
2answers
144 views

Can your ISP tell what google account searched what? And can they share this information? [duplicate]

If you search something, can your isp share the google account it was searched from?
1
vote
2answers
393 views

Google searches seen by ISP

When you enter something in the search bar right before it connects to google, can an ISP see that?
1
vote
1answer
119 views

Other computers/customers of my Internet Service Provider appears under my “Network” section in Windows Explorer

I could see many computers under "Network" section on the left sidebar of Windows Explorer, but I am the only one who uses computer on my home. So I suppose all those computers are also using the ...
0
votes
2answers
4k views

Can an isp see what you search on google images

I was under the impression all images were https. Not really a computer person. So I don’t really understand how this works. I was also under the impression that isps can see all images and searches ...
2
votes
1answer
180 views

How do ISPs send their own pages when a user is trying to access a blocked site?

I know that some ISPs send block pages(like "This site has been blocked because ... ") over HTTP by sending a fake 301/302 redirect. I also know that instead of sending a block page, some ISPs simple ...
0
votes
2answers
347 views

How secure are the default, randomized passwords that ISP routers come with?

Did a little searching an could not find an answer to this. A lot of ISPs these days are providing combination router/modem units, and they come with a pre-configured password that is a random string ...
1
vote
0answers
102 views

How to prevent router identification [closed]

How to prevent my router (D-Link AC1200 LTE Router DW-953) which is using a 4G sim card for data from being identified by an ISP? The router has the current Firmware Version V01.02.3.045, with no VPN ...
0
votes
2answers
130 views

Is it expensive for ISPs to store browsing, text and call logs?

I couldn't really find this answer anywhere. If an ISP was to record every browsing, call and text we make/send, would it be expensive for them log and store this? Assume an ISP has 4 million devices ...
0
votes
3answers
652 views

Will pentesting my own LAN violate ISP rules? [closed]

I want to learn and practice penetration testing on my own network, and I want to be sure I'm making it legal. Is there a system that reports to my ISP that I'm making suspicious activities, even if ...
0
votes
2answers
84 views

Securing Home Network using 3rd Party Firmware / Access Points

I've been having some trouble on my home network and thought that having a router as an AP would help fix these attacks. At first it did, but now it seems the attackers have gotten through. For all I ...
0
votes
1answer
255 views

How Hathaway ISP shows renewal reminder in non secure website?

I am using prepaid broadband plan of Hathaway (in India). Few more days are left for the plan to get expired and I observed the below screenshot. This popup comes only when I visit any non-secure ...
0
votes
2answers
214 views

Using a decoy traffic while using the internet

Since the ISP knows what sites I visit and they can assume or predict that I'm using Tor if they are monitoring my traffic, how can I distract them by making them see that I visit some particular site ...
2
votes
2answers
464 views

Is it impossible for an ISP to block access to a site that has a dynamic IP?

I was reading on how ISPs in many countries block access to many sites. This got me wondering -- How do ISPs block sites in the first place? I found answers here, and reading through, it became ...
52
votes
8answers
41k views

If I delete my router's history can my ISP still provide it to my parents?

If I delete my router's history, is it still visible and can my ISP still provide it to my parents? Or is it deleted from existence?
2
votes
4answers
2k views

Can an ISP detect or log specific devices connected to ISP-provided home routers?

Let's say I’m using a Dell Inspiron Laptop. Does my ISP have a log of this or can they detect what devices are connected to my router?
1
vote
1answer
1k views

How long do ISPs retain data? [closed]

I recently came across an article informing people about how long major ISP’s store user data such as IP assignments and other user data. On average, companies supposedly stored this data for 6 months ...
0
votes
0answers
48 views

Real time chat - is it possible to see messages from it again

I have a theoretical question. If you went on a website which provides real time chat service, and only login information it requires is a username of your choice, and the website adress was https, ...
0
votes
1answer
122 views

What is the power of my ISP about my modem? [closed]

I have speed problem for my internet connection. When I called my ISP they said that the source of the problem is your VDSL modem.TTNET is my ISP and modem is provided by ISP. I wonder How they can ...
7
votes
1answer
395 views

Do major ISPs still ignore IP spoofing?

I was reading this question: Why don't ISPs filter on source address to prevent spoofing? and based on those answers, ISPs ignore it because of the overhead of checking for spoofing. But that ...
0
votes
3answers
1k views

Does a self-hosted VPN (openvpn) at home encrypt traffic for my ISP? [duplicate]

Title says it all. If I host my own VPN at home (using openvpn), and connect my devices to it, will my ISP be able to see the contents of my traffic?
7
votes
2answers
2k views

How does DNS over TLS prevent your ISP from seeing the websites you visit?

For example, I'm using DNS over TLS in Android Pie. This happens: I visit a website (google.com). I send a DNS query to the DNS server, and the response is the IP address of google.com. The ISP knows ...