1
vote
1answer
32 views

From the command line, how do I tell if a particular VPN connection is up?

Suppose that I have multiple VPN connections configured in System Preferences/Network. How do I tell if a particular one (identified by the service name in System Preferences/Network) is up, on the ...
2
votes
0answers
58 views

Does OS X support AnyIP?

I would like to assign a complete block to my mac as described in this question: Can I bind a (large) block of addresses to an interface? There it is explained that AnyIP is supported for IPv6 by the ...
6
votes
1answer
146 views

Software recommendation: Command line network analyser that shows owning process

I'm looking for something that is a mix of tcpdump, lsof, and netstat. I want to be able to filter like tcpdump, but have an additional column showing the process ID. At the end I'd like to be able ...
1
vote
1answer
429 views

How to force OS X to give a different IP lease with DHCP?

Is there a command line solution to get a different IP from a DHCP server? There are some solutions, like switching to BOOTP and back to DHCP, that will sometimes yield a new IP, but often the DHCP ...
0
votes
0answers
34 views

Why nc doesn't response even if the “w” option set?

For some servers: nc -w 1 -z x.x.x.x 22 doesn't work. It has no response, but is looking like very busy: only ctrl + C can help. So -w 1 seems to be a useless option, to specify the timeout. Does ...
1
vote
1answer
493 views

Disable loopback interface lo0 on 10.8.4?

For testing purposes (testing raw network speed over a number of cables) i have equippped my Mac Book pro with a Thunderbolt to Gigabit Ethernet Adapter besides the built-in gigabit ethernet ...
0
votes
1answer
58 views

Run a program without networking?

Is there a way to run a program on OS X (e.g., from the command line) but without letting it see the network? I can turn off and disconnect all networking, but then all my other processes will be ...
0
votes
2answers
33 views

Determining currently used NIC on CLI

I do a lot of work on Virtual Machines, and have several scripts to help me configure them quickly. I could fully automate spinning up a headless VM, except that I need to know the IP of my host ...
6
votes
2answers
676 views

“Airplane Mode” in OS X. Alternative command for `rfkill`?

This question is an exact duplicate of this post from superuser.exchange.com. I believe this is a valid question for both of sites and hope I am not (if any) violating stackexchange policies. ...
2
votes
0answers
105 views

“df” command making network requests?

I was watching Little Snitch for another process, and noticed df was making requests to various servers. I thought df was only for checking free disk space locally, but it appears to be doing more ...
6
votes
1answer
385 views

How do I emulate Internet Sharing from the command line?

I'm trying to set up my Macbook Air to share an OpenVPN connection for use while I'm on the road and don't want my iOS traffic to go over the open Internet. Sadly, Mountain Lion's Internet Sharing ...
4
votes
1answer
759 views

Is there a OS X equivalent for iproute2?

I am searching a command line tool collection like iproute2 on Linux. Network Utility is OK, but I would like it on the command line.
6
votes
2answers
3k views

What is the preferred method of command line domain name lookup (DNS)?

What command line command do I use to lookup a domain address? When looking at the man pages for nslookup and dig I can see a section saying that these utilities do not use the Mac OS methods of ...
5
votes
1answer
4k views

How to control AirPort wireless radio from the command line?

I want to know how to control (specifically turn off) the networking (specifically AirPort - I want to turn off the radio) from the command line (specifically from bash in Terminal.app, being run by ...