Questions tagged [network]

Questions about configuring, troubleshooting or using connections that one device uses to talk to another.

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How to allow multiple network users to login on Mac machine which is enabled with File Vault

I have a scenario where I have connected all of our Mac machines to Active Directory (which is pain itself). However, after enabling FileVault from an Administrator account, I saw that network users ...
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11 views

macOS 10.12.6 airport commandline utility does not work

I'm trying to use the airport utility in Terminal to set a USB WiFi adapter into monitor mode. I have linked the airport for convenience: $ ls -l /usr/local/bin/ | grep airport lrwxr-xr-x 1 root ...
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30 views

Mac's Wifi shuts down automatically after restart

My WiFi in mac (using macOS Mojave 10.14.6 (18G87)) is not turning on even after several attempts of SMC reset PRAM reset Deleting the airport.plist files Restarting multiple times. Behaviour When ...
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72 views

How to configure a proxy for the mobile data connection?

Reasons why I want to configure the proxy is to surf anonymous, for security reasons, to gain access in blocked websites in some locations. I've seen that it is possible to configure a proxy with the ...
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1answer
16 views

Using scutil to set DNS for specific domains

I'm trying to resolve only example1.com and example2.com using a custom DNS server. I've read that scutil could come in handy, but after doing the following, the system-wide DNS is still used: sudo ...
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31 views

Improving NFS client performance

I have my Macbook Pro (MacOS Mojave) connecting to an NFS share on a Linux machine directly connected via Thunderbolt with jumbo frames. Testing with iperf3, I can do ~14 Gbps (~1.8 GBps) over the ...
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1answer
63 views

Poor WiFi Performance on iPhone

When migrating to a new router I remarked my iPhone (7Plus) had lousy TX performance compared to the other 80211.ac Apple devices connected to the same wireless SSID as revealed in below screenshot: ...
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16 views

I forgot my iphone ip address [closed]

I've accidentally changed my wifi IP address in cmd while trying to access private DHCP by using the ethernet cable but I couldn't access either. After disconnecting the ethernet, I try to use my own ...
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18 views

iMac receiving Mail, connected to wifi but no other connectivity

I have a 1 year old 28" iMac. Worked perfectly until last week. Says it is connected to home wifi network but other than Mail being received, nothing else wifi related will work (safari, firefox, can'...
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15 views

Mac can't ping anything outside subnet on ipv6

I've been running into an odd issue lately as I deploy IPv6. I have several subnets that are IPv6 enabled and both Windows and Linux clients work fine on them but for some reason, Macs are ...
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2answers
34 views

Script Wi-Fi SSID switch if on SSID “X”

I'm stuck on a script to switch a Mac to a different SSID if its already connected to a certain SSID. What I need the script to do is: Check what SSID the Mac Wi-Fi is using If it is on SSID called ...
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15 views

After unused for a while, MacBook Pro can't access internet and gets the spinning ball of death

Here are my stats and a brief summary of the problem: MacBook Pro 15 inch Touch Bar 2018 (MR932. Core i7 2.2 GHz, 16 GB, 256 GB, Radeon Pro 555X) running Mojave v10.14.6. Sometimes after unused for a ...
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1answer
38 views

SSH daemon listens on both IPv4 and IPv6, but I can connect only over v6

Ok, maybe I'm weird or something, but I can't figure this one out. MacOS Mojave, native IPv6 from my ISP. As you can see, sshd is listening on both v4 and v6: alluminium:~ root# netstat -an | grep ...
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1answer
47 views

My MacBook Pro keeps disconnecting from a working wifi network. Genius can't figure it out. Any ideas?

The wifi is fine. My MacBook just disconnects. As soon as I click back on the network, it immediately connects again. It is just disconnecting from the network. I have disconnected every peripheral, ...
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1answer
169 views

Safari giving “kCFErrorDomainCFNetwork error 303” when visiting a site

I am currently having problems visiting archive.org example link Safari 12 (and 13 b4) on Mojave shows the following error: kCFErrorDomainCFNetwork error 303 Things I've tried: disable all ...
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1answer
70 views

How & why do “0.0.0.0” connections get a response?

I have a lot of bad guys in /etc/hosts pointing to 0.0.0.0 If I use host to check the domain name, I get an actual IP address instead of 0.0.0.0 What I expected the resolver to give me is the same ...
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1answer
16 views

VPN with mac mini reachable locally but not from the Internet

I have a Mac mini that I'm trying to make ssh-reachable when I'm in a coffeeshop outside on the Internet (How do I convert my mac mini into a remote server?) so I can run more computationally ...
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21 views

Must disconnect then reconnect to wifi otherwise it times out

My MacBook Pro, Mid-2015 w/ Retina Display, running macOS Mojave 10.14.6, very very frequently times out when it tries to load web pages. It says it's still connected to the wifi network, but the ...
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16 views

How to Configure EndPoint Security VPN in order to route some traffic to it?

I'm using EndPoint Security VPN software in order to connect to VPN. Once it's connected I can not access any webpage, but I can still connect to the Client's environment. How do I configure my mac ...
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1answer
41 views

How to flush the DNS cache on macOS?

I've read that sudo killall -HUP mDNSResponder;sudo killall mDNSResponderHelper;sudo dscacheutil -flushcache should flush the DNS cache on OSX (macOS Mojave). However, this command kills processes ...
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1answer
26 views

Problems with network connection after switching USB LAN hub (despite using wifi connection) [duplicate]

I have a 2018 MBP running 10.14.x I had it connected to a thunderbolt / USB-C to ethernet hub, this model. Which i was using as a USB hub and ethernet adaptor. I recently moved desks and started ...
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2answers
21 views

How to detect network connectivy on an interface?

I have moved to a new location, and my Mac Pro 2013 running Sierra 10.12.6 is currently using the Wi Fi. I would like to hardwire it. Now, there is a wiring closest with a bunch of poorly labeled ...
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49 views

Finder Search not working when searching network drive shared with SMB connection on Mojave 10.14.0

We went through the nightmare of finding out that 10.14.5 Mojave did not allow other Macs to connect via SMB without freezing client's Finders and/or not connecting or dropping connections. To fix ...
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1answer
86 views

How can I cut off/block all traffic when I lock the screen (and resume when unlocking) in MacOS?

Looking to block all network traffic anytime I am away from the computer. I tried putting the iMac to sleep every time I step away and changed the sleep mode to hibernation as well changed energy ...
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29 views

How to set system-wide DNS server settings on macOS, not for each network?

I'd like to set one DNS server IP that my Mac should always use, but currently I have to repeat the same process every time I connect to a new network: System Preferences > Network > Wi-Fi > Advanced ...
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11 views

Unwanted activation of Parental Controls on network accounts

I am very confused about this issue and I don't know what to look for. We are using MS Active Directory Accounts on our MacBooks. Since last week the parental controls were activated on all network ...
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1answer
29 views

How to open the wifi sign-in page when it doesn't pop up automatically

One time I was at a hotel and I couldn't access the free wifi because the sign-in window didn't pop up. Since every webpage has a URL, is it possible to get to the wifi sign-in page through a browser ...
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0answers
21 views

F5 - MacOS - Error Code, Routing Table Cannot Be Patched

I've been having issues with connecting to F5 VPN with the newer Macbook Pro with the i9 Processor 15" running the Mojave macOS. It goes through the checks ok and before it connects it disconnects ...
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1answer
40 views

Network packets dropping for a few seconds every 3 minutes

I've been having this problem for a few months now, and have not been able to figure out what the problem is. I've noticed that when I'm on a video conference call, every few minutes, the video and ...
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10 views

Do packets routed to another interface using `pf`'s `route-to` option on macOS actually pass the given interface?

Do packets routed to another interface using pf's route-to option on macOS actually pass the given interface? I've read that pf's firewall rules only applies to packets that (physically) pass the ...
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2answers
54 views

How can I figure out why a MacBook Pro running Mojave causes network issues with our corporate Wi-Fi network?

We have a been problems with new Macbook Pro and Cisco Wireless. We able to see that some time the Macbook assuming the IP Address of network default gateway. Looking for mac address of the default ...
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0answers
34 views

Unable to use Remote Desktop to connect to Windows 10 virtual machine on macOS host

I am using a MacBook Pro with macOS 10.14.5 and VirtualBox 6.0 (with Extension Packs) to create a Windows 10 virtual machine (downloaded from https://developer.microsoft.com/en-us/microsoft-edge/tools/...
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38 views

DNS on VPN does not work

I have an Azure Point-to-Site VPN over IKEv2 configured and it works well. The problem is with DNS. DNS adresses are filled in Advanced tab of the VPN connection but it does not resolve anything. ...
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90 views

Windows client cannot access SMB file share on macOS Mojave

I am trying to get my Windows 10 PC to access a file share on my MacBook running macOS Mojave. I enable File Sharing on the Mac, give my account read/write privileges to a file share, and enable ...
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1answer
27 views

Network interface fallback?

I have 2 internet interfaces: Ethernet and Wifi. Ethernet is the office network (read: completely closed) and Wifi is way more permissive. The ethernet is used for back-office systems (internal ...
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53 views

Issue with WiFi and MacBook Pro when connected to external Monitor

I have recently been having issues with my WiFi connection (on both 2.4 GHz and 5 GHz networks) when my laptop is in clamshell mode and connected to an external 4k monitor. I use a USB-C to HDMI ...
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1answer
21 views

Why can't I create new network connections after enabling PF with a simple custom ruleset using `pfctl -f`?

Why can't I create new network connections after enabling PF with a simple custom ruleset using pfctl -f? I'm reading the official FAQ tutorial for OpenBSD's PF firewall, also used in macOS. I've a ...
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2answers
150 views

Does “Reset Network Settings” affect all devices?

If I reset my Network Settings in iOS/iPadOS, and so lose all my WiFi networks/passwords, will my other iOS devices also lose them? The reason I ask is that WiFi networks appear to be stored in the ...
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28 views

How to control iPhone “Personal Hotspot” via Terminal

I'm a recent convert to Alfred and want to build workflows to connect and disconnect my MacBook to my iPhone's Personal Hotspot. Are these commands easily available in Terminal please? I've looked ...
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0answers
33 views

My IPhone 7 is not connecting to the wifi

My iPhone 7 is not connecting to my office wifi, but my iPad Mini and Android devices are able to connect. The problem is only with my office wifi, I am able to connect my home wifi. Steps I did to ...
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1answer
30 views

Connect to a VPN server through a Raspberry (connected VPN client)

I'm trying to connect from my MacBook to the VPN server, which is accessible from the Raspberry as it's a connected VPN client. MacBook (172.25.0.139) ---> Raspberry (172.25.0.14) ---> [...
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0answers
43 views

Create Local Network Directory User on OS X server via Terminal

I found this post: How can I create an Open Directory network user with a command? but it didn't have any answers on it. I know there's a way to create a local network directory user, but I cannot ...
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0answers
74 views

Was my Macbook Pro remotely accessed?

I'm running Mojave on a Macbook Pro. A while ago, my screen started randomly scrolling down by itself while I was using Safari, and the problem persisted for a few seconds. The scrolling seemed almost ...
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50 views

Starting VPN Connection without Keychain Password Prompt

My IKEv2 VPN client certificates are stored in Keychain. When I initiate a VPN connection, I'm immediately prompted for my Macbook administrator account password before access to the Client ...
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22 views

Mac ping seems to cache DNS, how to stop this behavior

I have a split DNS situation happening. I have updated the DNS record on both local and public DNS servers. nslookup recognizes that the A record has been updated: user@MacBook-Pro:~ $ nslookup ...
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3answers
184 views

Wi-Fi really slow on Mac until I reboot

I have a Mac running Mojave 10.14.5. I have an issue with the home Wi-Fi. I have a 400Mbps internet connection. When I start the laptop, the Wi-Fi is fine and I'm getting expected internet speeds (...
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64 views

How to assign a permanent static route to an interface on macOS High Sierra?

I have found plenty of hints on the web to create permanent static routes to a particular gateway IP address, but I unfortunately I did not find a way to create a permanent static route to an ...
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53 views

How to flush the DNS cache of Safari on macOS Mojave without restarting the system?

I've experimenting with configuring dnsmasq on macOS for Apache vhosts instead of creating entries in /etc/resolver/<domain> for each domain. In my case, I configured dnsmasq to resolve .dev to ...
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30 views

How to set up a VPN connection via terminal?

I found How to create a VPN connection via terminal? but this isn't really what I'm looking for. I regularly have to set up new computers for new users that need to connect to our VPN and I'm trying ...
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1answer
71 views

Why would port 19421 be open on an iPhone?

Following up on the Zoom vulnerability, I decided to run nmap and scan my local network for devices with port 19421 open. One of the devices turned out to be my iPhone! What service would use that ...