pfSense + snort is AWESOME, quick look at IPS/IDS (For Free)
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- Опубліковано 10 лип 2024
- Hey there guys, so my journey into pfSense continues where I have played around with some of the IDS/IPS functionality on it to see how easy this may be to configure and get working. So this tutorial will just be showing you how to install the snort package and how to perform a very basic configuration of it to start your own IDS/IPS journey.
I highly recommend reading the documentation from pfSense & snort to ensure your configurations matches your own needs. (Links in the pinned comment)
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Details about the video:
Timestamps:
📕00:00 - Introduction
📕01:10 - Resource Recommendations
📕02:09 - Installing snort
📕03:40 - Configuring snort
📕18:30 - Testing snort
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As most things I suggest that you always review the documentation if you run into any snags or want to add any additional configuration to your setup :)
Netgate snort docs:
docs.netgate.com/pfsense/en/latest/packages/snort/index.html#snort
snort:
www.snort.org/#get-started
you spelled wrong the "deprecated" the c is more like "k" than "s"
Thank you man for making this video, learning so much! Much appreciated it!
Awesome video man!
Thank you so much for making this lovely video!!
Great video. Really helped unravel the mystery of setting up snort.
Howzit bru! Thanks for saving me hours and hours of time. It's so much quicker to set things up properly first and then try and break them than to not be sure if you built it broken in the first place!
Please keep doing loads more like this :)
I've been using PfSense for some time now and thanks to you I get to learn more tricks, thanks! :)
Thanks for putting this out here. It was very informative and helped me with setting mine up.
Your the only person I can understand fully and slow enough to get it done correctly thank you 🙏 ❤ not many tutorials out ❤❤❤❤
thankyou so much bro the tutorial
great video juststarting out in pfsense
I love these videos. pfSense - you normally need to get the hardware, and Mikrotik I just think is very competitive in terms of performance as a router / switch etc.
Thank you so much you are doing great.
very informative thanks
Thank you sir!
Hello sir,
Just wanted to thank you for all the quality videos. Learning a lot from your channel!
Very much enjoy your presentation style!
Thank you for the kind words Clint, appreciate the feedback :D!
$29.99/year for the personal license for Snort definitions is a good deal. It does allow you to stay on top of new threats. While I have been using Snort for a while, it is worth noting that Snort in pfSense is single threaded where as Suricata is multi-threaded. For my home network / lab, Snort hasn't been an issue, but I suppose it could be an issue depending on the size of your network and amount of traffic you are passing. Hopefully Netgate is able to get v3.x of Snort running on the platform now that it is multi-threaded. Since the WAN is a default deny all incoming unsolicited traffic, I'm not sure what benefit you'd get by adding that interface for monitoring, unless there are purposely open ports possibly. I've normally seen it on internal networks for isolating hosts with issues.
i love ur channel just found it today big fan u do an awsome job of explaning
Thanks Louis, I appreciate the support!
Snort up and running.
Many thanks
Very informative. Thank You.
DrLegend approves this video. Hey just wanted to say that your video was great and easy to follow. A+ for content, A+ for instructions, A+ for easy to follow.
thanks for the hard work
Thanks Dr, you're a Legend!
Firstly congrats for your comprehensive video tutorial
i am wondering if anyone has been using snort in combination with squid proxy in pfsense (in a business environment) ? do we expect any extra latency on network in case we use both of them
Thanks for the effort and time you put on this very help tutorial.I just recently installed snort on pfsense. Now it constantly blocks the IP address of freebpx installed at vultr cloud. When I removed the snort blocked list it blocked it again.
Big Like
If you're having issues with time out and error 0, check your dns settings under system>general setup. I had mine pointing at an old IP for my pihole+unbound setup. And check the logs of that DNS if you have it set right. Might have those providers blacklisted by accident. MMV
Thanks for the great video. I have a question: does it make sense and is it safe to use SNORT and PFBLOCKERNG on Pfsense at the same time? Won't this cause some conflict?
Can you please do a comparison between pfSense and Untangle and which is good for a home user.
Thank you for the video..I am not able to ping the public IP from my Kali..is there anything I am missing?
An idea for a video, setting up Crowdsec and pfSense, it is doable with a bit of creativity.
What i have some vlan interface.? Should i select them for snort?or just wan int?
Thanks for this, very helpful. Question: If you're not running any type of web services and no server at the office, do you still need any IDS/IPS? Is firewall enough since there is not server to protect?
Hmmmmm this is a grey area, in theory firewall rules should be enough to protect anybody. The thing about IDS/IPS it can also pick up interesting traffic even from your LAN. A user clicking a malicious link is more often the cause for unauthorized access to your network. So if the firewall can pick up that this user is connecting to strange sites and can block the user's connection you can effectively cut off access to a backdoor a hacker may have inside your network.
This may actually sound silly, but for the most part proper training to users about not clicking suspicious links no matter how legitimate an email or post online seems will drastically improve your security.
Hi, how to restrict client try to use tether their device using pfsense captive portal using snort?
i cant seem to test my snort from an external network
Can you do a simulation of pfsense using MPLS VPN tp connect two offices?
I have tried changing the rule category to IPS policy but it keeps being reversed to auto-flowbit rules despite applying . 14:58
Using pfs and want to control access to apps as well as web sites which use encrypted urls. Many opinions out there but no definitive answer. What package would be an ideal solution to meet the need, snort, suricata, pfblocker, or squid?
السلام عليكم اخي ممكن سؤال كيف يمكن منع التهديدات في snort
how did you manage to get internet access to your ubuntu running through pf sense? I'm currently struggling with this
Howzit Meneer Berg,
why did you decide to go for snort instead of suricata? As far as I understand snort is single-threaded and suricata is multi-threaded which should have a significant impact on performance.
I used to run pfblockerng and suricata on my pfsense router (HP T620 plus thin client) but decided to disable suricata as I noticed a drop in network performance due to the additional packet inspection. Maybe my hardware is just not powerful enough. ^^
Howzit :D!
To be honest I looked at snort since this is the first thing that's referenced in the pfSense documentation when it comes to IDS/IPS so that's why I made a video on that. From what I understand OPNsense runs Suricata by default so should see a video on that in one of my newer videos. Although I first want to make a video on Zerotier
You first setup with Security predefined will block the port scan. You were in the wrong place to look for the alert. You selected the Alert tab, but must be the Blocked tab
Thanks for the clarification.
rabi yfadhlek sa7bi
If all ports on my wan are blocked then does this not really do anything for me?
You can run snort against any interface, you could use your LAN interface as well and it should detect any strange traffic and deal with it according to your rules
Pfsense use as enterprise core router isp
I follow your guide, but some legit ip got blocked
Create a how-to video for having pfsense with snort and MikroTik as router.
That's exactly what I've done in this video :), the public IP resides between the MikroTik and pfSense firewall. The MikroTik is handling the routing the the internet.
@@TheNetworkBerg What benefit are you getting having the MikroTik handling the routing to the internet verses using the pfSense for direct internet breakout through the pfSense WAN port?
@@JaZzDeOliveira not really that much, though it is preferred having a router be a router and having a firewall be a firewall. ie I cannot do MPLS on the pfSense, but I also cannot do IDS/IPS on the MikroTik.
I think this is a pretty typical setup, though it's definitely not needed and I could just be running the WAN exclusively off of the pfSense.
(Which I might even do in future videos.)
You should put snort on your LAN side, not WAN. That way it will show you exactly what internal IP address or device is giving you problems
To be honest you can use it on either one or both/more interfaces at the same time. It really depends on what you want to use it for :)
@@TheNetworkBerg Yes and No. If enabled on the WAN the assumption would be you have services opened (port 25 or 3306) something like that otherwise, you are wasting cpu cycles on traffic that by default pfsense would drop anyway without a permit rule. So rule of thumb is always run it on the LAN and enable on the WAN if you internet facing services.
I have installed an ELK but I can't find how to collect the log when snort is installed from pfsense...
why my firewal/NAT/1:1 didn't have anything , and I can't ping to WAN by another virtualmachine, please help
Just comment on the "WAN Rules", selecting a policy under "Category Selection" will allow the admin to disable/enable a rule.
The effectiveness of the IPS is very limited in 2022. Majority of traffic is encrypted which the IPS cannot pick up and it picks up only known threats. Zero days an IPS wont save you but then again, if on pfsense running pfblockerng with IP block lists and dns sinkholing is more effective than using 30 day old rules (unless you are a snort registred subscriber).
Agreed. Zenarmor with SSL inspection via MITM on the LAN interfaces might be interesting, but unfortunately it won't work for devices that use certificate pinning.
So setting rules to download lists every hour in pfblockerng is better than this snort (freeware). Did I understand that correctly?
I thought Snort, on pfSense, is useless without being able to look within encrypted packets?
This is correct. Both Snort and Suricata aren't useful at all anymore these days, because basically everything is encrypted.
thats the downside to any IPS has nothing to do with pfsense.
@@PowerUsr1 that's not correct. Palo Alto, for example, have IPS process packets that have been passdd to it followong decryption.
@@epictetus8028 You said it just now...after decryption. As I said, Any IPS can detect malicious content if its unecnrypted. Im not following what you are trying to say here. AIf you are doing any MITM if its on a PA or a PFsense then the IPS can use the signatures otherwise as i stated there is no IPS that can read encrypted payload.
@@PowerUsr1 read my original post. PfSense is unable to send decrypted packets to Snort. That was my point. Palo Alto and other firewalls can.
memory is cheap, buy more
Excellent information here so I added it to my cybercentric T-channel (FlynnInfoSec1). As a recent NG6100 owner it is nice to have such a great resource!
can the cpu in the ng6100 handle snort or suricata?