pf is the OpenBSD Packet Filter, a feature-rich IP-layer firewall used on FreeBSD, NetBSD, and Mac OS X, as well as in the pfSense open-source firewall appliance software.

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3answers
505 views

How can one redirect to a new host all traffic destined for an old host?

We're moving a bunch of services, say from 1.2.3.4 to 5.6.7.8. In order to test that the new services are correctly configured, we'd like to redirect (to the new host) all traffic destined for the ...
3
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1answer
3k views

Enabling pf for transparent proxy on Mac OS X Mountain Lion

I'm doing some usability testing of a web application and am attempting to debug and record some SSL sessions using mitmproxy as a transparent proxy and for some reason pf under Mac OS X Mountain Lion ...
2
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1answer
106 views

PF redirect rule: how to limit the rule to specific user

I was trying to setup a PF redirect rule to force all web traffic from a specific user account to go through a web filter on a shared computer. With iptables, I can use --uid-owner option to limit ...
2
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1answer
231 views

Is there an equivalent of LinuxIMQs in BSD?

Is there an equivalent of LinuxIMQs in BSD ? From linuximq.net: The imq device has two common usage cases: Ingress shaping: With linux only egress shaping is possible (except for the ingress ...
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1answer
601 views

openbsd pf squid transparent proxy using a bridge

I want to use OpenBSD 5.7 as a filtering bridge in front of my router, and as part of that run a transparent proxy (squid 3.5.1) to manage web access. I have set up the openbsd machine as a bridge, ...
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1answer
202 views

FreeBSD pf with NFS

I'm having trouble establishing new NFS connections when my pf is turned on. When I turn off pf on the server and client I'm able to mount with no trouble. I tried keep state and flags S/SA on the ...
1
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1answer
203 views

Local transparent proxy OS X pf

I was trying to create local transparent proxy using this pf rules: rdr pass inet proto tcp from $Out to any port 80 -> 127.0.0.1 port 3129 pass out on $Out route-to lo0 inet proto tcp from $Out ...
1
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1answer
440 views

Command to set dscp / ToS value on outgoing packets for OS X Mavericks?

I want to set a certain DSCP (or ToS) value on all packets sent over port 22. I have an iptables command to do so, but Mavericks only has the equivalent of pfctl and I can't figure out how to ...
1
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1answer
94 views

Mac OS X Firewall isn't firewalling

Rather confused by the results I'm getting on a Mac OS X Server running 10.8. I have an app that is running a web server on port 8000, which I want to be visible only to localhost. This seems ...
1
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1answer
252 views

Limit ftp connections with pf firewall at FreeBSD

I want to limit simultaneous FTP connections to my FreeBSD server with the pf firewall. For example that only 10 simultaneous connection are possible to the port 20 or 21 from one source IP. I use ...
1
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1answer
222 views

How to filter TCP packets based on flags using Packet Filter

Well, I didn't know exactly how to ask this question, but I know that you can use the keyword flags to especify which flags you want to filter. According to the documentation of the Packet filter: ...
1
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1answer
283 views

PF firewall rules help

I'm having a heck of a time creating a pf ruleset for FTP. What I'm trying to do is : Only allow $WHITELIST to connect to FTP port 21 Open ports 49152 - 65535 for Passive port range Can anyone ...
0
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1answer
22 views

Redirection of pfctl on OSX gets error

I want all my traffics are redirected to SOCKS proxy on 127.0.0.1:1080. I added the rule below to the end of /etc/pf.conf according to this tutorial: pass on en3 proto tcp from any to any rdr-to ...
0
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1answer
342 views

traffic shaping on OSX 10.10 with pfctl and dnctl

I am trying to do traffic shaping (throttling) on Mac OS X 10.10 via pfctl and dnctl. I have implemented a simple test server and client with netcat (nc) and a synthetic random payload file to verify ...
0
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1answer
287 views

Forwarding IP address using pf

I'm trying to forward an external IP address to another external IP address with pf. The equivalent iptables command would be iptables -t nat -A OUTPUT -d [ipaddress1] -j DNAT --to-destination ...
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1answer
1k views

port forwarding with pf on Mac OS 10.9

I have to setup a port forwarding on Mac Os 10.9. The mac is connected to a OpenVPN, and I need to get access to another machine on the private network of the mac through that VPN. Apparently, Mac OS ...
0
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1answer
859 views

pf - redirect rule does not work

I'm using pf on FreeBSD 9. sshd is up and listening on loopback only (127.0.0.1). Trying to use redirect rule to allow network hosts to connect via ssh. set block-policy drop set skip on lo0 scrub ...
0
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1answer
475 views

pf not execute udp port specific block rule

The traffic I want to block can be sniffed as below with tcpdump: 19:16:22.391164 IP 95.95.95.95.2036 > 10.10.10.10.443: UDP, length 8192 So I wanted to write a rule block any udp destination ...
3
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0answers
123 views

pfSense Internal Traffic Policy Based Routing

What is the current and correct way to apply policy based routing to pfSense internal traffic (originating from the firewall itself)? Creating a floating rule with the WAN interfaces selected, ...
3
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0answers
135 views

How to split traffic through two different network adapters based on TCP port in OS X

I have a scenario where we will be using a Mac to stream video content to an RTMP server. This RMTP service provides 2 ingest URLs so that you can upload the same video content twice and have ...
3
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0answers
172 views

How to divert all OUTBOUND tcp traffic on port 1935 to localhost?

Mac OS X 10.10.3. I'm trying to use rtmpsrv. In order to do that, I have to redirect all outgoing tcp traffic on port 1935 to localhost. I tried: sudo sysctl -w net.inet.ip.forwarding=1 echo 'rdr ...
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0answers
28 views

Using PF under OSX but skipping local interface

I'm using PF under OSX to force the OS the make all external connections via a VPN to Ipredator. However, as soon as I start PF all local connections are blocked even though I thought I told PF to ...
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0answers
204 views

Openbsd 5.7: IPv6 advertisement not working

--context-- I have a Sokeris with 8 interfaces: em0 is connected to a bridge router (ISP) and em2 is connected to my DMZ network (web servers). I got from my ISP a /56 prefix and 2 DNS IPs but no ...
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0answers
62 views

PF rule for Continuity

So it looks like the Continuity on OS X 10.10 creates network interface on the fly (utun2 here) and my PF blocks it, so that I can't make/answer calls. I'm not an admin, just use the IceFloor for PF ...
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0answers
98 views

PF Firewall Rules Help - Block IP Hammering

I'm having an issue where someone is using a VPN / proxy to hammer my server. They will pick on random URL from my website and perform ~20 requests per second to it. Once I ban the IP address, a few ...
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0answers
81 views

Restrict “open” ethernet traffic to OpenVPN Traffic only when on a certain network

I would like to set up a pf or ipfw firewall rule on my Mac OS X 10.8 notebooks so that all Traffic on wireless and cabled networks is restricted to calling "home" through OpenVPN when I'm not in the ...
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0answers
49 views

Openbsd set connect on PPTP server behind packet filter

I have firewall on OpenBSD use Packet Filter and behind him MS Windows server with PPTP server. I need allow connect this PPTP server from internet. I set in OpenBSD: net.inet.gre.allow=1 ...
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0answers
114 views

pf.conf DNS dual redirect to dnscrypt-proxy. Just need confirmation my code is correct

I have 2 isolated LANS on my gateway. They are blocked from communicating to one another in pf by: block in log on $int_if from "192.168.1.0/25" to "192.168.1.128/25" block in log on $int_if from ...
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0answers
70 views

How to manage overload of ICMP with PF?

I would like to make a basic managment of ICMP overload with packet filter on FreeBSD. The function I would like to realise is:     if target receive too many ICMP from a given source IP address,   ...
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0answers
96 views

FreeBSD - How can I let server A get web access via server B over a specific port?

Setup: Server A: FreeBSD 10 - IP: 100.100.100.100 Server B: FreeBSD 9 - IP: 200.200.200.200 Both servers use pf.conf. Desired result: I want server A to be able to get web access (port 80) via ...
0
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0answers
412 views

PF, redirecting SSH to internal VM

I run a FreeBSD server with VirtualBox on it. There's a VM in there I'd like to contact via SSH directly using Port 20000. Client and FreeBSD server are connected through OpenVPN via tun. The ...