Questions tagged [networking]

Generic network issues. Before using this tag, check if there's a closer fit (see tag wiki).

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What would be a proper way to set dnscrypt-proxy on my phone to use DoH(Dns over https) to cloudflare servers

I'm using a Mediatek phone(stock rom) running Android 5.1.1 with root privillege(using Magisk). I downloaded the latest version of dnscrypt proxy for arm devices which came in a zip extension and can ...
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VLC android not able to detect local network share

I want to stream media files stored in my PC on my Android device. I had started a DLNA server on windows 7 laptop with help of both in-built feature and a software called SimpleDLNA server, both of ...
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“Connected, no internet” for my phone only, network otherwise working

I have a local WiFi (composed, if it helps, of a main router and another wifi accesspoint with the same SSID, but the problem persists even when turning it off), all devices connected to it seem to ...
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What Iptables rule should I apply for accessing/surfing the web only

I've recently managed to gain root privilege on a Mediatek Android smart phone. I'm willing to use this phone for websurfing only. I was wondering what Iptables rule should be applied to only allow ...
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What are some good security practices to take on a newly rooted Android phone and improvise further

I've managed to root my Mediatek Android smartphone using Magisck. I've managed to set up Afwall+ for now and was wondering how to further harden this device. If you have a smartphone with root ...
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Speed from mobile hotspot is not consistence and poor speed

I am WFH and using Xiaomi note 8 pro for hotspot to my work computer and I have D-Link dongle which catch the hotspot signal. I am using Airtel sim card for that. When I start working to my system at ...
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50 views

What is causing unknown network traffic on an Android phone?

I have a Xiaomi Redmi Note 8 Pro smartphone with Android 10 installed. Even when all apps are closed using the task manager, I see some realtime network traffic. It's not that much but it goes on all ...
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Cannot access network from non-root users in terminal (Permission denied) [duplicate]

Preamble My problem is, to run specific commands (i.e., start specific processes, possibly at background) on boot. I've installed Termux, so I want to start some of its commands at boot time, such as ...
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What is the easiest way to send push notifications from my GNU/Linux machine?

Not sure if this is the right network to ask this, but I want to have a simple way of sending a push notification to my android phone from a simple command on my linux box. Both devices are on the ...
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How to connect a usb tethered device to a device that is connected by hotspot both using a single phone?

I have a pc with no wifi card and a laptop. I want to use the laptop as a second monitor using spacedesk software but it needs the two device to be connected on the same network. the only resources I ...
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Unable to ping LAN from my android phone when the devices are on a JioFi(mobile hotspot) network

I am rather having a strange issue ... I have 2 mobile hotspot devices ... Huawei(unlocked) and Jiofi(locked to Jio network in India) Huawei Network Details Gateway(router IP) : 192.168.8.1 Subnet : ...
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Using VPN to proxy all data to a remote ssh gateway

I have a ssh Client connectbot which I can use to connect to a ssh server and then use the remote server as a gateway . I have socks proxy setup at the locally on android .I can configure Mozilla to ...
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High ping in emulator

I want to play mlbb on pc android emulator since it does not run on android x86. I have 70~90 ping on my network. But i am getting more than 150 in emulator. I tried switching netork mode and used ...
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Can anyone tell me what this means?

I have a spy wear app and it's showing these have accessed my net but I dunno how to figure out what they are..the ones in the pic with ?marks by them when opened thats what it read on the other pics
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Emulator 'redir' command unavailable… (?)

I am trying to configure my emulator to connect to my WiFi as per these instructions, however, I find that the "redir" command is not available. My emulator is for API version 29, and its ...
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Periodic slow wifi pings on android despite strong signal

I have an android phone connected to my home wireless. Every other device in the house works ok with the network. Checking ping in Android adb shows some weird results: Android:/ $ ping 1.1.1.1 PING 1....
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Android device screen turning off results in chroot network errors: “ping: sendmsg: Operation not permitted”

I am running Arch Linux ARM in an Android chroot environment. When I first created the environment my user account user was able to access the network and create sockets, however the root account was ...
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Port Forwarding with PDAnet+

I am trying to start a minecraft server and I was going through the port forwarding process. I can't play on a LAN with the other person. I am using PDANet+ (FoxFi Key) on an Android (Galaxy S9 edge). ...
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How to blacklist some cell base station on Android 9

As far as I know, one of approaches for disabling of mobile data traffic during public protests is use a fake cell base station with strong signal at local area. I did some research, but I did not ...
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Trying and failing to use phone mobile data as proxy

I tried following this: https://android.stackexchange.com/a/196779/327770 I connected my android phone, a Samsung 8 with Roger's sim card to my computer Bridged with adb Port forwarded 6400 on my ...
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1answer
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LineageOS 16.0, can't get tethering to work, Samsung Galaxy J5 SM-J500FN

I use 'Free' French ISP. Tethering was working previously, I made no update. I have another device with LOS 16 that works well with tethering. After running dhclient usb0 from my Linux OS, I get my ...
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854 views

How do I generate a PKCS12 CA certificate for use with Packet Capture?

I was trying to use Packet Capture app to find out some URLs used by an app. Packet Capture allows you to capture SSL packets by installing a VPN Gateway with its own root CA certificate and then ...
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How do I manually input ranges on Fwd: port forwarder app?

I need to make rules for these: TCP: 27015-27030,27036-27037 UDP: 3074,3097,4380,27000-27031,27036 The app does not support ranges, but apparently you can do it manually. How do I do this help :) ...
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How can I bypass android 9 VPN with iptables?

I'm targeting specific app with UID rule -m owner --uid-owner 1337 and I want this app always bypass VPN and use direct Wi-fi/Mobile Data connection. Ideally, I also want it to be universal, if ...
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Prevent automatic network selection after android auto-updates

I know how to put the phone on manual mode similar to Stop auto-selecting cellular network But when the andoird auto-updates I end up with automatic selection of network which I suppose is the ...
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1answer
407 views

How to make Ethernet work on Android over OTG?

I am trying to use an LTE modem connected to an Android 7 device over an OTG cable. The kernel recognizes the device and registers it with cdc_ether, but I am unable to use the connection from the ...
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132 views

How to access BlueStacks' localhost from Windows?

After some research I managed to access Windows' localhost from Bluestacks. If I open Google Chrome in BlueStacks and type 10.0.2.2:/... I can access Windows' localhost. How do I do this the other ...
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How to modify CSC file of samsung sm-j500fn?

My phone origin is the UK and I am in Sri Lanka now. My phone modemst1, modemst2 were reset and also I forgot to backup. dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1 dd if=/dev/zero of=/...
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22 views

Missing HSPA/LTE bands on Xperia Z3 Compact D5803?

With the recent official Lineage build for Z3C, I imported a cheap 5803 from Hong Kong to play around with. Installed Lineage, and noticed I was only getting an Edge connection on T-Mobile. Re-...
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1answer
174 views

Android Manifest File weird location Tags

I've started to read about the AndroidManifest.xml file and the network_security_config.xml. So if I want to include the network_security_config.xml then I use this: android:networkSecurityConfig="@...
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Android phones connect to TPLink TL-WR940N will not be able to use some applications

I'm connecting to a TL-WR940N router using wifi. I am able access to all website and facebook, telegram, spotify, netflix application for android, but i can't use Gmail apication, Google translate ...
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42 views

How to block all trafic outside home network and VPN by patching Android code?

I would like to patch LineageOS on my phone so it opens Wireguard tunnel through the 4G network to the home network routes all traffic from Android applications through a Wireguard tunnel or through ...
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22 views

Android Phone causing Wifi Outage

I have setup one of my phone as the WAN for my home network(Alcatel A7) using usb tethering.the router is a Miktorik and the users can browse. My Issue when i connect to the wifi with my other phone(...
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2answers
1k views

Connected to wifi, but no internet access

first question here. I was using wifi normally on my phone. Then I turned it off and after some time turned it back again. Since then I can not access the internet. It's showing Connected(no internet ...
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1answer
80 views

How to bring Android device and desktop PC to same network?

I have an unrooted Android device and a desktop PC running Ubuntu 18.04 with no built-in WiFi. I want to bring both the devices to the same network. I tried USB tethering from Android to desktop PC. ...
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48 views

Why would my IKE SA be deleted and not Rekeying?

I'm having some trouble with my VPN connection. First off, I'm on a Nokia 3.1 running Android 9 and using strongswan for a IKEv2/EAP connection. I've searched the strongswan site front and back and ...
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1answer
2k views

How to send all internet traffic to a SOCKS5 proxy server in local network?

I got the inspiration here. It looks like AFWall+ is able to create a NAT forwarding policy to keep all traffic going through a SOCKS5 proxy and fool Google apps into thinking they are not connected ...
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1answer
123 views

Proxy server connection

I have got a question. I am a college student in India, my college provides free wifi throughout the campus . To access the wifi we have to use the proxy server connection , we use apps like psiphon ...
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1answer
156 views

Accessing local computer using hostname

From my tablet running Android 9 I would like to access a web site on my local server using its hostname (server). This works fine from my laptop computer running Debian 10. However, on my tablet I ...
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1answer
481 views

Is dhcpcd used in newer Android versions? How to configure new DHCP client?

Basically, there's a file /etc/dhcpcd/dhcpcd.conf . Is this file or dhcpcd used at all? My phone runs Android 7.1.2 and I wanted to change the default hostname using the hostname somename line in this ...
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Cant check WiFi Data usage from billing cycle

It shows me my wifi data usage from 29 december. I want it from 19 Jan.. It's really annoying and I Need to check my wifi usage asap/ so I just go to settings, connections, data usage, wifi data usage,...
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54 views

How can I view traffic from a Android or iOS device to a IoT device?

I need to troubleshoot/debug some data being sent from an Android and/or iPhone to an IoT device using 802.11n w/WPA2. I've proxied traffic from a mobile phone to a web server exposed to the public ...
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49 views

Wifi router disappearing after disconnecting rom VPN In Android

Every time I use a VPN and disconnect from it my Wi-Fi router disappears from the Wi-Fi network list. This happens on my Android Pie phone and tablet. I can see all other routers but not the router ...
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1answer
2k views

DNS queries are cached permanently, how to reliably clear DNS cache on Android 7+?

Is there a reliable, reproducible way to clear DNS cache on Android Nougat 7.0? I know there is at least one other question like this but that one was from 8 years ago and I hope I can ask again and ...
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283 views

Connect Android device to Wifi for internet and ethernet simultaneously

I have a Samsung tablet where I want to use wifi for internet connection and ethernet to communicate to other network devices connected to it such as Field Bus Coupler etc simultaneously. Right now ...
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What is going on with my Android after I did factory reset

Is that normal to have a saved network after doing a hard reset on Android?? Or that Roku direct thing?? I did a hard factory reset on my android and I fiddled around with the settings in there . Not ...
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1answer
193 views

Why I am getting a strange DNS server in my dhcp client android phone?

Sorry for bad english. I have a DHCP server router with IP 192.168.0.254 Everything goes well, but my phone and my tablet gets a very strange DNS 1 server: 80980492081 Here is a screenshot: This is ...
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37 views

keep needing to reset wifi

The network at my office works when I first connect to it, but every few minutes it becomes very slow. When this happens, I need to quickly turn the Wifi off and on, then it gets fast again. As you ...
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42 views

Adroid phone refuse to connect via WAN interface while all other devices on the LAN or WiFi can connect to internet

In short, my phone cannot connect to the internet via 2 WiFi access points in my house. 4G mobile data works fine. Connecting to other WiFi and hot-spots away from my own WAN works fine. All other ...
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2answers
174 views

How to port forward minecraft PE Server on android

I have set up a minecraft bedrock edition server on my android phone by setting up nukkit in an ubuntu for ARM being emulated in termux terminal emulator for android and it runs pretty well and I can ...

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