network – Redirection – Different Website from Different Computer

There are URLs which its only purpose is to redirect the HTTP requestor to a correct website. Say, if I tried to access example.com/0wa/RaNd0m from my computer, it would redirect me to wikipedia.com. But if I tried it from my Virtual Machine in AWS, it would redirect me to a malicious site. Why is the final web page different for every different computer? Can you explain the step-by-step (technical) process of how this works? I believe this happens because the redirection proxy is checking the IP address and then sends the requestor accordingly. Please correct me if I am wrong.

If I wanted to analyze the malicious website, I would frequently have to log in to one of my AWS virtual machines (each having different Public IP) and then visit the URL. Is there a better way of doing this?

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lightning network – How does circular rebalance on LN work?

How does circular rebalance on LN work? (note: circular rebalance is term used in RTL, I use lnd). Let me describe the situation that happened to me:

I have two channels, one with Alice, one with Bob.

The situation before circular rebalance from my point of view:

Me    (200) sats outbound -----(400)----- (200) sats inbound         Alice
Me    (200) sats outbound -----(200)----- (0)   sats inbound         Bob

Then I initiated a circular rebalance of 100 sats on the the second channel with Bob and I was asked to choose “receive from peer” where I chose Alice

The situation after the circular rebalance from my point of view (supposing no routing fees):

Me    (300) sats outbound -----(400)----- (100) sats inbound         Alice
Me    (200) sats outbound -----(300)----- (100) sats inbound         Bob

My overall outbound capacity increased by 100 sats while overall inbound capacity stayed at 200 sats. Did I just make 100 sats? Did I cheat Alice?

Solution (It was my misunderstanding, I’m answering here because Rene’s answer is really good and I want to keep it):

Basically, my outbound capacity decreased on the channel with Bob by the expected amount but the commit_fee on that channel rose by 100 and since I thought that my outbound capacity + commit fee are my disposable funds I thought of them as a overall outbound capacity which is not obviously the case.

What actually happened:
The situation before circular rebalance from my point of view:

Me    (200) sats outbound {100} commit fee -----(500)----- (200) sats inbound         Alice
Me    (400) sats outbound {100} commit fee -----(500)----- (0)   sats inbound         Bob

The situation after the circular rebalance from my point of view (supposing no routing fees):

Me    (300) sats outbound {100} commit fee-----(500)----- (100) sats inbound         Alice
Me    (300) sats outbound {200} commit fee-----(500)----- (100) sats inbound         Bob

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Optimal network multiplayer implementation for my project? (Unity)

So basically I made a minimal board game, turn-based game, similar to chess in most aspects.
I’m planning to implement a P2P/client server, my main question is, considering the low graphic/memory requirements, which networking system would be the optimal choice?

I have found several solutions and tried to compare them, but the pros and cons were pretty abstract and I couldn’t figure out completely based on which parameters I should take a decision.
My secondary question is, can P2P be reliable when implementing it on a simple 2D top-shot (static camera) game that has low, minimal requirements?

I’ve researched and found that it is usually not recommended at all,
But since 3D network requirements are significantly higher than those described here,
I’m re-asking this question.

Thank you so much
Omer

network manager – NetworkManager-dispatcher make kernel hang

I have been experiencing some hangs with my system, in the last 24h I had 2 hangs, in my system it appears network message before each hang;

someone had a similar problem?

any suggestion?

error 01:

-- Reboot --
Sep 29 08:33:17 unknown systemd(1): NetworkManager-dispatcher.service: Succeeded.
Sep 29 08:33:08 unknown systemd(1): Started Network Manager Script Dispatcher Service.
Sep 29 08:33:08 unknown dbus-daemon(1382): (system) Successfully activated service 'org.freedesktop.nm_dispatcher'
Sep 29 08:33:08 unknown systemd(1): Starting Network Manager Script Dispatcher Service...
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0603) dhcp4 (enp6s0): state changed extended -> extended
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0603) dhcp4 (enp6s0): option subnet_mask          => '255.255.255.0'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0603) dhcp4 (enp6s0): option routers              => '192.168.69.1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0603) dhcp4 (enp6s0): option requested_wpad       => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0603) dhcp4 (enp6s0): option requested_time_offset => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_subnet_mask => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_static_routes => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_routers    => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_root_path  => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_rfc3442_classless_static_routes => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0602) dhcp4 (enp6s0): option requested_ntp_servers => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_nis_servers => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_nis_domain => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_ms_classless_static_routes => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_interface_mtu => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_host_name  => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_domain_search => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0601) dhcp4 (enp6s0): option requested_domain_name_servers => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option requested_domain_name => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option requested_broadcast_address => '1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option ntp_servers          => '200.186.125.195 200.189.40.8 >
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option next_server          => '192.168.69.1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option ip_address           => '192.168.69.37'
Sep 29 08:33:08 unknown dbus-daemon(1382): (system) Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.n>
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0600) dhcp4 (enp6s0): option expiry               => '1601379788'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0599) dhcp4 (enp6s0): option domain_name_servers  => '8.8.8.8 1.1.1.1'
Sep 29 08:33:08 unknown NetworkManager(1384):   (1601379188.0599) dhcp4 (enp6s0): option dhcp_lease_time      => '600'

error02:

-- Reboot --
Sep 29 01:12:08 unknown systemd(1): NetworkManager-dispatcher.service: Succeeded.
Sep 29 01:11:57 unknown systemd(1): Started Network Manager Script Dispatcher Service.
Sep 29 01:11:57 unknown dbus-daemon(1371): (system) Successfully activated service 'org.freedesktop.nm_dispatcher'
Sep 29 01:11:57 unknown systemd(1): Starting Network Manager Script Dispatcher Service...
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3555) dhcp4 (enp6s0): state changed extended -> extended
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3555) dhcp4 (enp6s0): option subnet_mask          => '255.255.255.0'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3555) dhcp4 (enp6s0): option routers              => '192.168.69.1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3555) dhcp4 (enp6s0): option requested_wpad       => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_time_offset => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_subnet_mask => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_static_routes => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_routers    => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_root_path  => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_rfc3442_classless_static_routes => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3554) dhcp4 (enp6s0): option requested_ntp_servers => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_nis_servers => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_nis_domain => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_ms_classless_static_routes => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_interface_mtu => '1'
Sep 29 01:11:57 unknown dbus-daemon(1371): (system) Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.n>
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_host_name  => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3553) dhcp4 (enp6s0): option requested_domain_search => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option requested_domain_name_servers => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option requested_domain_name => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option requested_broadcast_address => '1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option ntp_servers          => '200.186.125.195 200.189.40.8 >
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option next_server          => '192.168.69.1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3552) dhcp4 (enp6s0): option ip_address           => '192.168.69.37'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3551) dhcp4 (enp6s0): option expiry               => '1601353317'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3551) dhcp4 (enp6s0): option domain_name_servers  => '8.8.8.8 1.1.1.1'
Sep 29 01:11:57 unknown NetworkManager(1372):   (1601352717.3551) dhcp4 (enp6s0): option dhcp_lease_time      => '600'
Sep 29 01:07:08 unknown systemd(1): NetworkManager-dispatcher.service: Succeeded.
Sep 29 01:06:57 unknown systemd(1): Started Network Manager Script Dispatcher Service.
Sep 29 01:06:57 unknown dbus-daemon(1371): (system) Successfully activated service 'org.freedesktop.nm_dispatcher'
Sep 29 01:06:57 unknown systemd(1): Starting Network Manager Script Dispatcher Service...
Sep 29 01:06:57 unknown NetworkManager(1372):   (1601352417.3566) dhcp4 (enp6s0): state changed extended -> extended

linux networking – What’s the best way to handle name resolution on my home network?

On my home network, I have a number of Linux machines, a few Windows laptops and VMs, some Android phones, and a handful of game consoles and Chromecasts. Many of these things need to talk to one another. I make heavy use of SSH, rsync, Barrier (née Synergy), X2Go, IPP, and other communication protocols between many of the devices on my network, be they Linux, Windows, or even Android.

Years ago, when pretty much the only things I had that wanted to talk to each other were Windows boxes, I could usually rely on the NBT master browser magic to handle name resolution. So from one Windows computer, I could access another’s shared folders with \hostnamesharename, or Remote Desktop from one to another by its name, etc.

I’m not sure what, if any, “standard” solution there is to fulfill this need on a primarily Linux network. What I’m currently doing is running a DHCP server and a DNS server on a Raspberry Pi running Arch Linux ARM. I have DHCP reservations for most of the devices on my network, mapping them to DNS names, which assign them fixed IP addresses.

This works perfectly well, and isn’t more work than I can handle, since the number of nodes I need to handle this way is relatively small and changes fairly infrequently (I have about 30 DNS entries for currently active nodes). It is a little inconvenient that I have to use separate names for my wired and wireless interfaces, but most of my devices spend 95% or more of their time using just one interface, so I don’t stress too much over it.

But I’m curious what the “normal” way to do this is. I’m sure most people don’t disable the DHCP server built in to their home routers and run their own DHCP and DNS servers, even people with Linux and Mac hardware. And administrators of larger (corporate) networks can’t possibly manage names as manually as I do.

Is there a canonical way to manage name resolution that doesn’t rely on the kind of manual maintenance I do today, or is what I’m doing pretty typical for my use case?

windows 10 – Can people within the same Wifi/LAN network find my network shared drive?

Can people within the same Wifi/LAN network find my network shared drive?
I’ve turned off Network Discovery for the “server” PC running on Windows 10 Home.

I am moving to a co-working space. As the name suggest, it is a type of office whereby many different tenants of different companies share the same place for work. There are about 8 companies in this co-working space. We are all connecting to the same Wifi/LAN.

Here is the thing. A few of my PCs have network shared drive with one PC being the server host. When I move over to the co-working space office, can those ppl in the office from different company actually see it?

Despite turned off Network Discovery, I am just afraid that there is other method that people can still scan the computer address/IP and access it. However, entering shared folder will require the “server” credentials still.

Just my concern as data is P&C.

Seeking your precious advice on this.

network – Search Domains not seeming to work through DHCP on iOS/iPadOS

I have set Search Domains (DHCP Option 119) in my router, but it does not seem to be working on my iPad.

I can see on the router logs that it is being sent to the iPad along with the other requested DHCP information, but it does not appear in Settings.

Search Domains

It gets sent and is used by Windows (yet to test on Linux), so why not on iOS/iPadOS? Does it work for anybody else?