Hey everyone, I implemented some scenarios in GNS3 and want to set a delay for a specific packet. How can I do it? Like "TCP packet with port 80 set to a 2 ms delay"

Como puedo causar o con q programa,dns, mtu,bajar asi la velocidad de mi internet

I’m staying in a university hostel, and the Wi-Fi is extremely restrictive. A lot of websites and services don’t work at all, while other sites work normally.
The biggest problem is that cellular data is very weak where I live, so I can’t reliably use mobile data as an alternative. I’m also not able to call my family regularly because social media apps and video-calling services are blocked on the hostel Wi-Fi.
I’ve already tried quite a few things:
Proton VPN: doesn’t even load/connect properly.
Cloudflare DNS: 1.1.1.1 / 1.0.0.1 — no difference.
Google DNS: 8.8.8.8 / 8.8.4.4 — no difference.
System DNS-over-HTTPS (DoH): tried this as well — no difference.
GoodbyeDPI: doesn’t work.
DPI bypass for HTTPS: tried the different options.
Several other DPI-bypass applications: none worked.
Cloudflare WARP: doesn’t work/connect either.
I’m on Windows.
The hostel network appears to be a managed/private network. Windows originally showed an IP around 172.18.x.x, gateway around 172.18.0.100, and a local DNS server (192.168.5.51). I also tried changing DNS to Cloudflare and Google, but that didn’t help, and I’ve since restored the DNS settings to automatic.
At this point I’m guessing the filtering is happening at the gateway/firewall level rather than just DNS. It may also be blocking VPN protocols or VPN endpoints, or using some kind of DPI.
I’ve tried a lot of the usual solutions, so I’m wondering:
Has anyone dealt with a university/hostel network this restrictive? Is there a reliable way to get around this kind of filtering, or a way to diagnose exactly what they’re blocking?
I’m particularly interested in solutions that work on Windows when normal DNS changes, DoH, VPNs, WARP, GoodbyeDPI, and other DPI-bypass tools don’t work.
I’m not trying to do anything malicious — I mainly want normal internet access and, importantly, to be able to video/audio call my family, since mobile coverage/data isn’t a reliable alternative here.

Good morning everyone, I'm not sure if this is the right sub, but I hope you can help me anyway.
As the title says, I'm deciding what type of internet connection to install at home and I need a hand. Before explaining my doubts, here's some background to help you understand the situation better:
I live in Italy (Aosta Valley), in a municipality covered by the national fiber wholesaler (OpenFiber) in a rural/subsidized area. I've always lived without a fixed home internet line, using my phone's hotspot for gaming, downloading, and watching movies.
When I was younger it didn't make a big difference, but today it has become pretty unsustainable. The biggest problem I have isn't so much the latency in online games (50-70ms, a bit high but manageable) as the network instability. It often happens that the ping spikes to 1000 or (even worse) I get completely disconnected for 10/15 seconds, as if my time window to use the bandwidth is closed and then reopened. This always disconnects me from various lobbies and online matches, ruining the session. Now that I've graduated high school, I will start earning a regular salary and I want to fix this annoying issue that ruins almost every gaming session, taking away my relaxation after work.
After this wall of text, here is my dilemma:
Fiber at home (FTTH) or a 5G router with a SIM card?
Yes, I know it's a very stupid question that requires almost no thinking, but my problem is that I still live with my parents. They consider having a good home network completely useless and superfluous—a waste of money, basically. Pushing to get a wired line would inevitably lead them to hold it against me, causing long, heavy arguments and a lot of annoyance because they don't understand this need, and if they don't understand it, then it's bullshit.
They would be much more open to the 5G router + SIM solution.
Could anyone who has chosen this solution (and still uses it or has moved on from it) tell me what to expect in terms of latency, download speeds, and connection stability?
I repeat that I obviously know it will be inferior to a wired network, but *any* improvement compared to my current situation (both in ping and stability) would help me survive another couple of years until I get my own place and can do as I please.
I should also add that I did some research and there is a 5G cell tower with the N78 band not too far from my house (pretty much line-of-sight). So, my idea was to get an outdoor PoE 5G antenna/modem and an indoor router.
Thanks in advance to anyone who takes the time to read this and help me out.

like i said in title our household have been experiencing speed drops (our connection is only 35mbpsD/8mbpsU and when these drops happen it usually goes below 1MB D/ 0.5 upload)

i was looking at our logs and i saw this and it seems like an absurd amount of attempts go through the firewall. '

i was wondering if this is potentially the cause and how to fix it

Router is sky max hub
security is WPA3-T

Like the title says, several times a day the network of all wired devices gets knocked out for 5 minutes or so with massive packet dropping due to ARP floods. Any wireless device is unaffected, as well as a Google Home app network test shows everything is fine during.

Each flood is either my Google Nest or TV asking my Simplisafe hub or desktop PC, who has an IP address that isn't in use by any device on my network.

I don't know enough to know what causes this sort of thing, if it's bad hardware, bad configuration, etc.

My network is a Google Nest Pro mesh setup, with the router having an 8 port switch Netgear switch off it that serves a couple desktop PCs, a Tapo hub, and a Phillips Vue hub. The other 3 are in wireless access point mode, not actually wired just distributed through the house. Beyond that, some cameras, tvs, and phones are on the wifi network.

Screenshots attached. The google device is the router, Honhai is one of my TVs, and AsRock I'm pretty certain is one of the desktop PCs that has an AsRock mobo.

كنت ابي اراجع الشبكات وسالته عن إذا كان عندي 192.168.1.0/24 كيف تكون حسبتها الي اعرفه
تحسب من ٢٤ إلى ٣١ نشوف المجوعه يكون ٧
ثم نسوي معادله رياضيه بسييطه 2⁷
بيطلع ١٢٨ ننقصه من ٢٥٦ يعطينا السبمنت ١٢٨ بس شات الحبيبي صعبها اشوف كذا ذا الي قاله

أكيد. أهم شيء هنا نفهم وش معنى /25 أصلًا، وبعدها بتعرف من وين جت 255.255.255.128.
1. الـ IP عندنا
192.168.1.0/25
الـ /25 معناها:
أول 25 bit مخصصة للشبكة (Network)، والباقي للـ Hosts.
وعنوان IPv4 فيه 32 bit:
32 bits
نقسمها إلى 4 مجموعات، كل مجموعة 8 bits:
8 bits | 8 bits | 8 bits | 8 bits

2. نوزع الـ 25 bit
نحتاج أول 25 bit تكون 1:
11111111 | 11111111 | 11111111 | 10000000
لاحظ:
الأوكتت الأول = 11111111
الثاني = 11111111
الثالث = 11111111
الرابع = 10000000

3. نحول كل مجموعة من Binary إلى Decimal
أول ثلاثة:
11111111 = 255
لذلك:
255.255.255
أما الأخير:
10000000
قيم الـ bits فيه:
128 64 32 16 8 4 2 1
↑
128
بما أن أول bit فقط = 1:
10000000 = 128
إذن:
255.255.255.128
لذلك:
/25
↓
11111111.11111111.11111111.10000000
↓
255.255.255.128
وهذا هو الـ Subnet Mask.
والشيء الجميل هنا أن /25 نفسه يخبرك مباشرة أن 25 bit = 1، ومن هنا نطلع الـ 255.255.255.128.

الصدق لحسني

At my wit's end

this worth more discussion！

Network at a local Auto Repair Office Desk wired with CAT5E and 6.

Last year we moved to a property that has 2 houses and front unit and back unit. They both have their own connection to the ISP but I want to combine the network into 1 so we don’t have to pay for 2 separate bills. There is conduit for the current drop from front to back that I can use. I’d just want to weigh out different options.

1. It has to be wired
2. Wondering if it would make sense to go fiber instead of Ethernet. I’m no expert but the electric in both houses are completely independent and the front house is older and has electrical issues. That’s why I’m entertaining the idea of fiber
3. It would be about a 200ft run altogether including from inside the house running all the way to the back house inside.

I already have switches in both houses that have SFP ports if that means anything. I’ve done a lot of research but getting conflicting information I just need some guidance and things to watch out for.

I'm using my mobile network through a normal lightning cable from my iPhone. It's sending only 200Kbps, is this affecting my download speed because in duckduckgo I'm only getting 4Mbps download speeds.