Collaborate Disseminate
I’m using ufw on a debian server and apparently an attacker is able to circumvent the filtering rules. ufw uses iptables.
The server host http and mail services, and has an ssh port. I use a non-standard port for my ssh and… Continue reading How are my iptables rules circumvented?
How do I account for the traffic using iptables? E.g. How can I follow how many resources scanning a single host require, in terms of network bandwidth ?
Continue reading measuring network bandwidth during scan with iptables [migrated]
I am trying to open port 443 on Windows Server 2012 R2 and Ubuntu Server 18.04. I am scanning both of these in zenmap to see if port 443 is opened and it is closed on both of them. I would like for it to be opened
UBUNTU:
I … Continue reading How do I open port 443 or HTTPS in Windows Server and Ubuntu Server? [on hold]
I am trying to open port 443 on Windows Server 2012 R2 and Ubuntu Server 18.04. I am scanning both of these in zenmap to see if port 443 is opened and it is closed on both of them. I would like for it to be opened
UBUNTU:
I … Continue reading How do I open port 443 or HTTPS in Windows Server and Ubuntu Server? [on hold]
I’m learning how to properly configure iptables to fend off TCP port scans on a hosted Linux-based VPS — I’m not particularly interested in blocking this kind of attack, but rather in understanding why I experience problems … Continue reading Could an intermittent or "resuming" connection be caught as a TCP port scan attempt?
I am trying to play around to understand how SSLStrip+ works by:
$ cat /proc/sys/net/ipv4/ip_forward
1
$ sudo iptables –flush
$ sudo iptables –flush -t nat
$ sudo iptables -t nat -A PREROUTING -p tcp –dport 80 -j REDIRECT… Continue reading Experimenting with SSLStrip+ on the same machine
I want to monitor/sniff the DNS queries I make while I’m using a VPN connection with my OpenVPN client.
My initial motivation was to check if I’m leaking DNS queries; then using this page it seems I’m not leaking, but I still… Continue reading watch DNS queries while using OpenVPN.-
While setting up the Cuckoo malware analysis environment, most tutorials say that you should setup ip forwarding from the VM to the host OS which has Cuckoo setup. However after this step my internet stops working, and after … Continue reading Internet stops working when configuring IP forwarding when installing Cuckoo Dynamic Malware analysis environment
I’ve been trying to make sense of this for months now. If this is too broad, or more appropriate for another forum please say so. I would appreciate at least a lead to documentation, as I simply cannot make sense of this.
I … Continue reading Gateway firewall basics & managing multiple elastic IPs to non-http services
Assuming for a self-hosted webserver:
the webserver only hosts a static html website
iptables is used to reject every IP except a few known ones
only Port 443 is forwarded and the website requires SSL via client certificate… Continue reading Dealing with the dangers of self-hosting a webserver?