firewall

I'm using a fairly strict PF ruleset on a server and I am having trouble with updating the system. I have port 80 and 443 open (http and https respectively) but I get a "No address record" error when I try to update the repositories. I also have port 21 open in case it used ftp, but it...

Hi All , I need to audit the rules and settings of a FreeBSD firewall against best practice ""my first time", the client has sent me a text file . Is there a software I can use to make this analysis? If not, what is the best process for auditing this FreeBSD firewall? Thank you

Having read, and re-read Chapter 31. Firewalls, I'm hugely disappointed in the lack of clear direction offered by the author. As a reference, it's not horrible, but for someone looking to turn on the firewall so their workstation or server is relatively safe, it's not good. I'm not a new user...

OK. I've read man firewall and Chapter 31. Firewall and I'm still a bit uncertain about which firewall to choose. Here's my use case: I have FreeBSD 13 installed on my Lenovo Thinkpad T-430. I alternate between the ethernet connection and wifi. Either way, I only use IPV4. I would like to be...

Hi, guys! For a while I used for my whmcs setup composed by apache + mod_php as backend and nginx as reverse proxy. I was thinking i'm safe until someone with few proxies succeed to open enough connections and apache eaten whole amount of RAM (2GB). Any idea how to block this kind of...

Howdy, I recently started using pf (FreeBSD 13.0) as my home FW with very basic rules: lan="bge0" wan="bge1" set loginterface $wan set optimization normal set block-policy drop set skip on lo0 scrub on $wan all nat on $wan from $lan:network to any -> ($wan) block drop log all pass in on $lan...

I have a new FreeBSD 13 PC behind a firewall and need to connect to a SOCKS5 proxy to "go out". How do I configure the operating system to proxy to a fixed SOCKS IP address and fixed port?* * So all applications will just "go out" without configuring each one individually.

Hi, hardware gurus! How exactly BSD pf performance (in matter of low latency, high PPS, etc) depend on bus frequency, main CPU frequency and L2/L3 cache size in multi-package (mean physical multi-CPU, like Intel E5500/5600, E5-2000 series) server systems that intend working as border firewall...

I am looking for best practices and see if anyone else is successfully running a similar environment. Have FreeBSD server that is basically a LAMP environment. That is living on a public IP address and using IPFW to block everything except 80 and 443. That is all working very well without...

Posting this from a phone on mobile network. I tried accessing forums.freebsd.org from my computer connected by wire, from different browsers and by another device connected to wifi from the same network. Forums.freebsd.org is still not reachable.

The purpose of this post is to try and clarify a few basic ideas in packet filtering that I'm having trouble reducing to firm principles in practice. 0. PF lives in the kernel and handles all packets as they pass between NI(C)'s and daemons 1. Packets are identified by the NIC of origin and...

Hi all, Could somebody with some knowledge and experience have a look at my pf.conf before I start using it, to make sure I'm not doing anything stupid with it? I am using FreeBSD 12.2 on a laptop connected via wifi to my ISP router and the VPN provided for work. I am using OpenVPN and...

Hi! I was not sure if I should put this to networking or off topic. I am looking for a relative cheap ITX motherboard and computer case which can handle 2x8 PCI-E cards with bifurcation without cutting metal or other kind of tinkering. I'd like to have something small for my home network, but I...

Hello everyone, I'm having little problem with my setup of FreeBSD and Softether VPN. I want to be able to make connection with my VPN Server while firewall_type="closed". I thought I had to add these rules: add allow udp from any to any 67 setup keep-state add allow udp from any to any 68...

As my rules get more complicated, i've gone from "from any", to "from ip-address", to "from en0". What I noticed is that when I specify via en0/en1, `pf` makes a rule for every IP address on that interface. Even though other IPs in my setup are covered by other rules. Including IPv6 addresses...

Hello, I've read a number of other threads and resources (here and elsewhere) but I can't seem to get the correct combination of things to make my scenario work. Some info seems to be outdated or I'm not sure how to fit it in. Maybe it just isn't possible. Hopefully this isn't completely...

According to the reddit post, the kid made a server, and used ssh to connect to it. He had a version of firefox that ran on the chromebooks/PCs on a flashdrive that routed the requests to the BSD server rather than the schools dns filter. I have putty connected, the firefox and flashdrive is...

Hi. I have very simple setup. One windows PC and one FreeBSD server with samba share. I don't need anything regarding windows network management, printing, netbios etc. Only one share. There is my smb4.conf: [global] server string = My Samba Server netbios name = my-samba workgroup = MYHOME...

(Sorry for being a noob, It's my first time on the forums) Hi, I am using a custom firewall rules script, It supposed to block all connections other than the ones specified here but well, it doesn't here is my script: IPF="ipfw -q add" ipfw -q -f flush #loopback $IPF 10 allow all from any to...

I have (courtesy of fail2ban + nginx) tables of IPs I would like to stop from accessing the server in any way (ssh, web, etc.). When they try to ssh, pf blocks them like it should. When they access the webserver directly, they get blocked. But when they access via a proxy, I have no idea what...