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.

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3
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2answers
464 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 ...
3
votes
1answer
1k views

How can I enable DVD or CD Sharing with the Firewall on?

I'm trying to enable "DVD or CD Sharing" in the System Preferences. When I enable it, it says that the Firewall is blocking it. If I go into the Security > Firewall settings, I see that the first item ...
2
votes
1answer
382 views

Configure ipfw to filter by ip range

I am a Linux user and very new to OSX. I have an OSX 10.7.5 "Lion" server that I am configuring as a webserver. I only have shell access. I am tryin to configure the firewall, but ipfw is quite ...
1
vote
1answer
15 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 ...
1
vote
1answer
149 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 ...
1
vote
1answer
283 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 ...
1
vote
1answer
350 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
372 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: ...
0
votes
1answer
75 views

Yosemite Server, adaptive firewall not stopping screensharingd attempts?

I'm not certain if the adaptive firewall in Yosemite Server 4.0 is just not working or just not working for screensharingd. I have a mac mini server in a colo and get lots of attempts at ...
0
votes
1answer
98 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
1answer
117 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 ...
0
votes
1answer
121 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 ...
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
1answer
103 views

How can I permanently suppress the firewall access prompt while developing a server program

I have a server process that I am developing that opens listening TCP sockets. Each time that happens, the firewall opens a dialog with the text "Do you want the application “server” to accept ...
0
votes
1answer
84 views

How can I disable the firewall on OS X after forgetting how I set it?

I have enabled an option on my mac to ask for permission every time I open an network application, But I can't seem to find out how to turn it off. Where would I disable the below dialog?
2
votes
0answers
207 views

Why does my firewall block connections even when it's off?

This most notably happens with iChat. I don't use a firewall, never have on this computer. When I first started using iChat (when Skype 5 came out and sucked hardcore) I couldn't video chat with ...
1
vote
0answers
94 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 ...
1
vote
0answers
46 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
0answers
64 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 ...
1
vote
0answers
92 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 ...
1
vote
0answers
543 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 ...
1
vote
0answers
570 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
0answers
29 views

Enforcing firewall (native or 3rd-party)

We're currently doing PCI compliance, and one of the requirements is that mobile devices that have access to systems involved in processing card data have personal firewall software installed which ...
1
vote
0answers
2k views

FTP: active vs. passive, command line vs. browser

Here's a weird one for everyone. I'll use AskDifferent because my test bed is on a Mac, but I don't know that the underlying issue is specifically Mac. My Mac is behind a NAT wall. Let's call my ...
1
vote
0answers
509 views

Macbook Pro 10.7.5 I have internet connection but can't open any page

I need some help. My internet was working fine and all of a sudden I am not able to open a web page. I went through some of the steps you recommended to other users, such as adding DNS 208.67.222.222 ...
1
vote
0answers
712 views

How to open port 8080 on external interface?

I am running a server on port 8080, which I can access fine as localhost:8080 or 127.0.0.1:8080. However, assuming my IP address is 192.168.1.15, how can I access the port using 192.168.1.15:8080? ...
1
vote
0answers
103 views

Ip blocked since I updated my Mac to Mountain Lion

Since I've upgraded my mac from lion to mountain lion, the ip 5.9.31.48 (api.shellycloud.com) appear to be down (ping said that "Host is down"). So I think that there is somewhere a firewall rule that ...
1
vote
0answers
2k views

How do I use pf/IceFloor to block an outgoing connection to an IP address?

I am running an application that regularly phones home and reports a little more information than I'm comfortable with. I would normally add the reporting server's hostname to /etc/hosts, but the app ...
0
votes
0answers
60 views

Forwarding IP address on Yosemite

I've been trying to redirect ip address 1.2.3.4 to 5.6.7.8 using IceFloor and PF rules. I have tried the following: rdr from any to 1.2.3.4 -> 5.6.7.8 This does not make a difference and ...
0
votes
0answers
30 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 ...
0
votes
0answers
13 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. ...
0
votes
0answers
134 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 ...
0
votes
0answers
29 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
68 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
99 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 ...
0
votes
0answers
90 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
0answers
141 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 ...
0
votes
0answers
330 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
0answers
269 views

Can someone help me with errors in my pf.conf file? OS 10.7

I keep getting errors about the order of my rules and that there are syntax errors in my pf.conf file, and after troubleshooting for days, I thought I'd ask for some help. Please take a look and let ...