Tagged Questions

Typically software that runs to prevent network traffic from reaching a computer. Also a hardware device that works on a network level rather than running on a single computer.

learn more… | top users | synonyms

1
vote
1answer
11 views

Firewall rules ambiguous?

In the stock OSX firewall settings I can add applications to the rules table, and then give them a red dot (block) or a green dot (allow). I've got 6 apps in the table. Some green some red. But what ...
0
votes
1answer
31 views

Firewall: Add command-line tool to rules (mosh-server)

How can I add a command line tool I've installed manually to the system firewall? The tool is Mobile Shell (mosh) installed via the excellent Homebrew)? Specifically, I want to add a rule for ...
0
votes
0answers
23 views

SelfControl not blocking anything

I have used SelfControl to block the internet for some time, but now it won't block anything anymore. (Edit: Well, acutally one moment SelfControl blocks some sites, then allows them again, apparently ...
2
votes
1answer
185 views

Disable Little Snitch in Guest account

It seems that Little Snitch 3.4.1 is a rehaul of the old version and this solution to disabling it in the guest account posted here Disable Little Snitch in guest account? doesn't work anymore. When ...
0
votes
1answer
75 views

Cant access firewall in system preferences; firewall tab is greyed out

I have tried multiple things to rememdy this issue. I have tried enabling and logging in as root, tried to clone the system preferences app and accessing security and privacy from the view menu and ...
4
votes
1answer
86 views

ShellShock: Do I need to be worried about this on OS X Mavericks?

The title kind of says it all… I was in the process of bringing up a rather extensive set of Mac OS X Server machines when ShellShocked hit the world. As soon as I saw the news, I hastily began ...
0
votes
0answers
11 views

Firewall overwrite with wrong install version - How to fix

Hello. Not sure if this is an appropriate question here: Problem: Partially inaccessible computer. Due to firewall software overwrite (?) Need-Intent: Restore the machine condition & data. ...
1
vote
1answer
85 views

How can I add a ipfw forward rule to little snitch?

I use the following rules to connect to my nginx server on a vagrant machine: sudo ipfw add 100 fwd 127.0.0.1,8080 tcp from any to me 80 sudo ipfw add 100 fwd 127.0.0.1,8090 tcp from any to me 443 ...
0
votes
0answers
113 views

Opening Firewall ports on Mac OS X 10.9

I am attempting to open only a defined Firewall port on Mac OS X 10.9, for istance 1000 TCP. I know that Mac OS provides two different types of firewall: ALP and PF/IPFW. ALP allows only to control ...
1
vote
2answers
329 views

How to open a specific port in Firewall OS X 10.9.4

How do I open a specific port in the firewall? I can not use the "allow connections from application" as I want to open the port for Jenkins, that is not on the list...
1
vote
1answer
199 views

How can I tell Firewall to allow incoming connections for Python.app running Django

Each time I run my Django development server, I get a dialog to allow incoming connections. No matter what I do : Click Allow in the dialog box Add to the Firewall via the OS X GUI (both real and ...
0
votes
0answers
26 views

How to use macports with intego netbarrier installed?

Re: Mac OX 10.9.4 (and previous mavericks); intego X8 netbarrier; macports 2.3.1 I need help getting Intego's X8 netbarrier firewall software working with macports. Many, but not all, macports fail ...
0
votes
0answers
18 views

Why doesn't Apache show up under Firewall (System Preferences » Security)?

Why doesn't Apache show up under Firewall settings, and are there other programs that aren't showing up here? (outside of those that are inclusive of "basic internet services", e.g. DHCP, Bonjour, ...
0
votes
0answers
57 views

Is there a way to stop OS X opening NAT-PNP/uPNP holes for every open port on *?

With any luck, there's an easy work-around for this: curl ifconfig.me to find your external IP address sudo lsof -i4 -n | grep LISTEN | grep \* to find processes listening for connections from other ...
0
votes
0answers
82 views

pfctl rules to only allow OpenVPN connection?

I'm trying to lock down my internet connection for privacy reasons and have signed up with a VPN provider who does no filtering (quite opposite to my ISP). The VPN provider supports OpenVPN via UDP on ...
1
vote
1answer
58 views

Modify existing Little Snitch rule to be Effective in all profiles

I've been using Little Snitch for a while. I have several profiles set up (e.g. Home, Work, Public, etc). I've been working to generalize some of the rules. E.g. Instead of specifically allowing ...
1
vote
0answers
75 views

Open port 8888 for HTTP traffic from local network

I have my OS X 10.9.3 Application Level Firewall turned on (Firewall: On in System Preferences | Security & Privacy with Firewall Options: Block all incoming connections). ipfw show lists a ...
0
votes
0answers
81 views

Set DSCP/TOS IPv4 header for certain packets

I'm trying to set the value of the DSCP/TOS field for certain outgoing packets (for example all ACK packets) for all applications. I've looked through the pfctl/pfconf.org and ipfw docs/manpages but ...
0
votes
1answer
107 views

CrashPlan requests network connection on startup

Since upgrading to Mavericks, CrashPlan requests incoming network connections each time my MBP is restarted. I always click "Allow" and I've ensured that my firewall settings allow it, but I still get ...
1
vote
0answers
286 views

ntpd and incoming connections on OS X client?

I recently received a dialog box on my MacBook Air (10.9.2 Client) asking "Do you want the application “ntpd” to accept incoming network connections?". I have OS X's firewall enabled. Now, my ...
1
vote
1answer
309 views

packet forwarding on OSX mavericks

My MacBookAir(Mavericks 10.9.2) need to share my internet connection(wi-fi;en0) with BeagleBoneBlack(BBB) which are in 192.168.7.0 subnet over en6 interface. ifconfig $ ifconfig lo0: ...
3
votes
2answers
354 views

How to block internet access of all apps (except browser) when using 3g usb modem?

Is there any app that helps me to block all apps for accessing the internet when using 3g modem?
1
vote
0answers
44 views

How can I allow a “development” program through the firewall?

I have an application (java) that I compile/run through netbeans, I want to access it from a different computer. Opening a port might be the best solution, though if so I'd like to be a little more ...
1
vote
1answer
119 views

Free firewall and network monitor Application like the LittleSnitch? [duplicate]

I am searching for a good free firewall and network monitor as the littlesnitch but I can't pay for this app. I want a firewall that will protect me but more of that to monitor any connection in or ...
1
vote
2answers
2k views

Do firewall tools exist for OS X Mavericks for preventing brute force attacks?

Here's the deal: Over the last few weeks, I've noticed a large number of authentication failures for both the sshd service and the screensharingd service on my Mac OS X Mavericks server (running ...
1
vote
2answers
35 views

Enable internet only for specific apps

I will need to spend few weeks with no internet, but I will still have my mobile hot spot. So I wonder if I can prohibit all apps including OS (which I know will try silently to update something) from ...
1
vote
1answer
143 views

Blocking internet access for a specific application on Mac OS X

How can I block internet access to a specific application in Mac OS X? I need this to be done from the command line and hopefully use the ipfw terminal command. Specifically I am looking to toggle ...
3
votes
3answers
172 views

I have a service listening on a port, how do I open the port externally?

I have a service that is listening on a tcp port, and it is listed with this command: >netstat -atp tcp | grep -i "listen" tcp4 0 0 192.168.2.5.8070 *.* LISTEN ...
1
vote
2answers
326 views

Can't access certain websites

I'm trying to access the site http://www.svenskadomaner.se but it's unreachable from my MacBook Pro (OSX 10.8.5). The domain belongs to a web hosting company and it's not only this specific site I ...
1
vote
0answers
59 views

CalenderAgent: howto allow connection only if needed?

I use LittleSnitch, and there i can see that CalenderAgent makes still connection to Google and iCloud even iCal is closed. Because of several reason..., I want to allow CallanderAgent making ...
2
votes
1answer
1k views

What's the “built-in” firewall in OS X 10.9?

By "built-in" I mean the backend of the System firewall (System Preference->Security&Privacy->Firewall). Is it ipfw or pf? (I know that ipfw was the backend for previous versions of OS X). And, ...
1
vote
0answers
85 views

MacOS 10.6 firewall treats IPv4 and IPv6 packets differently

I'm develping a wireless MIDI controller. When connecting to a Mac running Mac OS 10.6, everything works fine, so long as the controller attempts to connect to the Mac using IPv4. When using IPv6, I ...
0
votes
0answers
134 views

Configure OS X Application Firewall to allow non-signed software with UDP protocol

I understand OS X has the Application Firewall which allows you to control connections on a per-application basis, rather than a per-port basis. I have developed an application that utilizes UDP and ...
1
vote
0answers
507 views

Mail.app can't connect to network (can't reach servers)

One day I woke up and could not use my Mail.app anymore :( Mail can't connect to any my account related server, either POP, IMAP or SMTP Why ? I don't know. In Log file I see that: When I try to ...
3
votes
2answers
400 views

What are the numerous incoming connections I see on public wifi for?

In general I have incoming connections disabled by my security software (Little Snitch). But even when I do this, on public wifi, I see numerous incoming connections for netbios and mDNSResponder ...
1
vote
0answers
509 views

No Jailbreak Firewall for iOS (iPhone) for iOS 7

Is there a non jailbreak firewall for the iPhone or is there some way to set one up, somehow?
1
vote
1answer
815 views

OSX Firewall: Forwarding Ports & Ignoring Non-Local Requests

On my production Debian server I use this to forward requests that come in to port 80 to a non-root process running on port 8080: sudo iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j ...
5
votes
2answers
7k views

Migration Assistant fails on Ethernet Mavericks-to-Mavericks migration

I have the following setup and am attempting the use Migration Assistant over Ethernet: Source machine: Early 2009 24-inch iMac running OS X 10.9 Destination machine: Latest MacBook Pro Retina ...
0
votes
1answer
1k views

Migration Assistant fails on FireWire Mavericks-to-Mavericks migration

I have the following setup and am attempting the use Migration Assistant over FireWire: Source machine: Early 2009 24-inch iMac running OS X 10.9 Destination machine: Latest MacBook Pro Retina ...
0
votes
0answers
27 views

Pf configuration for tor

How an I configure pf firewall to block all allow tor bundle? I have the rule : block pass out log on $_interface proto tcp to any port { 100, 200 } I have tor configured with config button ...
1
vote
2answers
104 views

Pf firewall logging

I have pf configured and working with rule sets that are logged. Where is pf logging to? How do I check these logs? How do I configure them?
2
votes
2answers
251 views

How to configure `ipfw` on Lion, Mountain Lion?

I'd like to configure and start ipfw on Macs running Lion, Mountain Lion. I found that pfctl is configured and started with: /etc/pf.conf /System/Library/LaunchDaemons/com.apple.pfctl.plist How is ...
1
vote
0answers
52 views

Prevent data on unsecured wireless, until VPN is connected [duplicate]

There's a lot of good advice around about avoiding connecting to unsecured wireless networks, and using a VPN (for all traffic) if you absolutely must use one. What seems to be missing from this ...
5
votes
3answers
306 views

Open ports. Safe?

My friend is currently running the default firewall with "Block all incoming connection" (except the basic ones like 80). I just scanned his mac for open ports and I found the following: Open TCP ...
0
votes
1answer
227 views

Block access from WAN but not from LAN

I have an OSX Lion box behind a router (firewall on in the router). On the OS X, if I switch the firewall on, I'm unable to access the web server running on this box from outside the network (i.e. ...
0
votes
1answer
135 views

How to isolate apps from the internet?

Can I completely isolate apps on mac from the internet, without installing any additional software ? I need a sort of firewall to isolate them thanks
1
vote
1answer
89 views

Sharing screen with Messages.app on Mountain Lion

Both computers are running OS X 10.8.4 When trying to initiate the screen sharing feature, the other computer gets the request, then clicks "Accept" but thats as far as we get. Then we see this: I ...
0
votes
0answers
302 views

What app is this ScannerEventWatcher.app?

After enabling the Firewall, I got this message: Do you want the application “ScannerEventWatcher.app” to accept incoming network connections? Clicking Deny may limit the application’s ...
0
votes
2answers
793 views

Is it possible to block a specific IP from attempting to connect to screen sharing?

I have noticed for some time that the shared screen icon flickers on and off on my menubar every couple of minutes (MacBook Pro, MAC OS X 10.8.4). I thought it was a glitch or a bug. I've checked the ...
1
vote
1answer
637 views

How to configure client OS X VPN (L2TP) connection so you do not loose access to intranet?

I am looking for a solution for configuring the VPN on OS X so you do not loose access to internal network. In fact I want to use the VPN only to enable access to different external services that ...