Collaborate Disseminate
Two days ago I built a Debian 10 server in the United States for use as a file server for my web application. When I created the server, I installed the fail2ban package and configured a basic, minimal firewall using the following rules:
… Continue reading Does this iptables entry indicate someone’s trying to break in?
I created a hotspot on wlp2s0 and connected an android device, whose IP is 10.42.0.62.
I am trying to route my all packets from my wlp2s0 interface to burp proxy which is running on 8080. I also enabled invisible proxy, but still no luck
I… Continue reading Local Burp Proxy not showing routed packets
I’m trying to understand iptables commands in a university course. I have many examples of how it works but they’re too trivial, in particular I have just examples where the iptables software is on a single machine that needs protection. B… Continue reading Iptables managing a LAN
I want to block traffic that contain specific string “anypattern”.
I know that the right iptables rule for that is:
iptables -m string –algo bm –string “anypattern” -j DROP
The problem that the data could be split to many TCP sequenc… Continue reading iptables block fragmented flow that contain specific string
How do you prevent someone from doing an TCP reset attack between client and host without having acess to host?
I am trying to solve a CTF for fun and learning purposes.
In one of the challenges I establish a connection wit… Continue reading TCP reset attack / forged TCP reset prevention
I have spent years struggling with masquerading on LuCI. I have WAN (over broadband modem), local servers with Static IPs (DMZ) and a LAN with 192.168.xxx.yyy.
Obviously I want two zones: outside (DMZ, WAN) and indoors (LAN… Continue reading Masquerading/LuCI
Ubuntu 20.04
iptables 1.8.4-1
I experienced a situation where a remote system seemed to be able to slip through the first iptables rule of a Linux server located behind a NAT router:
-A INPUT -s <remote_ip_addresses_ran… Continue reading Has a remote rogue DNS client managed to slip through the first iptables rule of a Linux DNS server?
I want to set up a MITM-scenario as an exercise for myself. My setup looks like this:
Internet <——–> Laptop <———-> Client
At this stage I just want to route the traffic from my AP to the internet, without monitoring … Continue reading MITM setup using airmon-ng, iptables, and isc-dhcp server
I read some posts which say Raspberry Pi connected directly to the internet is unsafe and various precautions should be taken. My main purpose is to avoid any attacks/breaches.
Usage of the Raspberry Pi:
As a router
Access… Continue reading Are these iptables rules safe for a SBC connected directly to the internet?
Researching to build a internet management system for organizations such as libraries, lodges, college dorm rooms, hostels and small business like diners, cafes, pubs. Free Wifi networks with public or open passwords always g… Continue reading Which Tools are required for internet management system [on hold]