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Ask HN: Why does the US Visa application website do a port-scan of my network?

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161–170 of 269 posts

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#161
post #99

If would be interesting to see what happens on OpenBSD. With pledge(2) and unveil(2) in Firefox, I wonder what it would see. I expect it would see nothing. I will give it a try and see what happens and if I see anything I will add it here.

I saw nothing of note on OpenBSD. I added the plugin and it prompted me an attempt was made to scan the network, it said it blocked the scan

SO, I guess that is going to be used on all my firefox runs.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#162
post #68

Earlier quoted context omitted.

You might be making the assumption that the US wants to make the process easier.

Not to defend the US immigration system, but my experience is that this user-hostile behavior (modulo the port scanning lol) is endemic across US government websites - including those that nominally want to serve you, those that are at the state level instead of the federal level (such as the DMV sites), and those that are even internal for use by government employees only. It's bad enough that in some cases I believ…

This. The website for buying treasury products is straight out of the year 2002. The login is so bad I would never consider buying them there - the service fee charged by brokerages is absolutely worth it in this case.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#163

"Since looking into it, I noticed that uBlock Origin already has the default list "Block Outsider Intrusion into LAN" but it wasn't enabled." Never knew that this existed. Thank you!

Checking out the initial request on github for this feature I wonder why is this necessary? What access to the local network does the browser provide, or need to provide, and why isn't this something developers are more concerned about? I had a feeling this was possible as I see lots of mdns requests when I connect to certain things running sockets. https://github.com/uBlockOrigin/uAssets/issues/4318

There are certainly use cases, but whether they’re warranted is a good question.

One popular router maker offers a ‘magic URL’ (domain name) that scans your network for the gateway management page, and redirects. It’s not necessary, but it certainly helps novice users. Having worked in IT support,

I’ve also purchased hardware devices that have a web management UI; which connects directly instead of proxying through a cloud.

Ultimately this is probably one thing that should be behind a permission request (like webcam access), but it’s not a feature without value.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#164
post #56

The "port scan" just seems to be a local connection to 127.0.0.1:8888. I don't know what purpose it serves on this page, but our government websites often use this technique to communicate with native software for digitally signing documents. Are you seeing connection attempts to other IPs?

This is most likely an attempt to connect to a webserver on your own device to collect data and/or do tracking. Remember back in June when Facebook/meta got caught tracking users trough a webserver on Android phone thought Messenger and Instagram? Same thing. See: https://news.ycombinator.com/item?id=44169115 and https://news.ycombinator.com/item?id=44175940

Why do you say that’s most likely?

This is a common pattern for connecting to smart cards / hardware security devices. Probably a service or hardware that’s run on official CBP machines that should be disabled for prod, but forgot.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#165
post #83
post #78

Earlier quoted context omitted.

You are looking at it from Turkish perspective unfortunately.

I am EU citizen, I happen to know the Turkish perspective only because spent some years in Turkey and in fact it is the Turkish perspective that that EU doesn't want them and intentionally makes things harder but the moment you look at what's actually going on you see that this is not the case, just a Turkish fantasy about the "evil West and snobby Europeans". Considering that last year 50K Turks applied for asylum i…

[flagged]

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#166
post #84

Earlier quoted context omitted.

You use the same system for Business visas. Hard to imagine US wouldn’t want those as easy as possible.

You don't have a good enough imagination for how stupid our current leadership really is.

During 8 years of Obama and 4 years of Biden, none of this was different or better. Perhaps this isn't a partisan political issue.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#167
post #128
post #68

Earlier quoted context omitted.

You might be making the assumption that the US wants to make the process easier.

I'd invoke Hanlon's razor, but in this case, it's certainly both malice and stupidity...

They are so frequently intertwined

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#168
post #46

Visa application is riddled with scams. From the simple website that charges you twice the price to websites that will tell you that you were rejected and then fake your documents to get in with your name. So they're probably trying to see that you're not one of those web servers, a proxy for them or detect some known C2 channels.

That would be quite clever for an incredibly horrible website. The other day my SO, who is a Turkish citizen, was filling up her visa application and after half an hour of meticulous form filling the system just kick her out. I think the session times out or something. If you haven't created an account or you haven't write down the current application ID everything is lost. In the process she was also directed to a n…

>> the system just kick her out

The "waterfall model" is a toxic way of thinking that pervades corporate management. Simplistic minds can't fathom any states other than "done" or "not done". Corporations are determined to crush the human soul. That is why it's not a progressive series of forms, saving your progress all along.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#169
post #46

Visa application is riddled with scams. From the simple website that charges you twice the price to websites that will tell you that you were rejected and then fake your documents to get in with your name. So they're probably trying to see that you're not one of those web servers, a proxy for them or detect some known C2 channels.

That would be quite clever for an incredibly horrible website. The other day my SO, who is a Turkish citizen, was filling up her visa application and after half an hour of meticulous form filling the system just kick her out. I think the session times out or something. If you haven't created an account or you haven't write down the current application ID everything is lost. In the process she was also directed to a n…

I had this problem too last year. I found, at the time, it was the website was poorly managing the session in some browsers causing the timeout countdown to not be reset on activity. I had to find a windows computer and use microsoft edge I think (maybe it was chrome). But no browser on my mac would not have that issue.

Re: Ask HN: Why does the US Visa application website do a port-scan of my network?

#170

Earlier quoted context omitted.

Not to defend the US immigration system, but my experience is that this user-hostile behavior (modulo the port scanning lol) is endemic across US government websites - including those that nominally want to serve you, those that are at the state level instead of the federal level (such as the DMV sites), and those that are even internal for use by government employees only. It's bad enough that in some cases I believ…

This. The website for buying treasury products is straight out of the year 2002. The login is so bad I would never consider buying them there - the service fee charged by brokerages is absolutely worth it in this case.

Which brokerages charge fees for purchasing US Treasuries? Schwab definitely doesn't.

Really the only reason you need TreasuryDirect is for buying Series I bonds (and maybe a few other niche Treasury products), which are not available through brokerages.

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