How to detect a firewall used
I was scanning a network with Nmap.
I’m looking for advanced commands for detecting firewalls.
Category Archives: firewalls
Network Segmentation – Single Firewall VM vs Multiple
I am currently implementing a new network with different segments. The separation of those segments is achieved using VLANs. To enable some segments to communicate with each other and to be reached from the internet, a firewall is planned…. Continue reading Network Segmentation – Single Firewall VM vs Multiple
No root firewall vs any spyware / malware
I am wondering about the effectiveness of no root firewalls as a solution against any type of spyware / malware. Particularly on an android device.
No root firewalls like this one here (aptly named) NoRoot Firewall is an application level … Continue reading No root firewall vs any spyware / malware
Writing effective UFW & IpTable rules
I am quite new to UFW and IpTables and I am trying to understand what kind of rules we should look to implement to keep a web-application secure. The current scenario I am testing myself in is that I am writing rules for an application lik… Continue reading Writing effective UFW & IpTable rules
UFW vs IpTables for web application security
I am trying to better understand measures that can be used to protect a web-application. I’m trying to determine which would be more effective, implementing a UFW or using IpTables.
From my perspective, they are both as effective as each o… Continue reading UFW vs IpTables for web application security
Best practices for home hardware [closed]
I currently have a limited setup and really want to tighten up the privacy and security, and I am troubled with the patterns of configuration, my current setup is as:
Spectrum DOCSIS 3.0/1 (Modem)
Netgate 2100 (Firewall + VPN)
Linksys 180… Continue reading Best practices for home hardware [closed]
The router (that my PC is connected to) is continuously attempting to connect through TCP80. What would be the reasons?
I have no access to the router nor do I have any administrative access to this local network. But every 5 minutes the router attempts to connect to my PC through port 80/tcp, and it attempts exactly 4 times each time (and tries again 5 min… Continue reading The router (that my PC is connected to) is continuously attempting to connect through TCP80. What would be the reasons?
How much network noise is normal? [closed]
on my Ubuntu VPS I am getting a lot of requests and portscans from foreign sources. They are all blocked by UFW. However my question is, if this much "network noise" is normal or is my server being targeted?
Here is the UFW log:
… Continue reading How much network noise is normal? [closed]
Couldn’t validate TLS certificate – Nord VPN
I received this notification from Nord randomly. Should I be worried? Is there something I can do? Am I being hacked?
P.S. clicked Don’t trust
EDIT: I tried connecting from mobile data and am receiving a different notification, so the ISP… Continue reading Couldn’t validate TLS certificate – Nord VPN
How can malware or a hacker penetrate a firewall from external perimeter?
How can malware or a hacker penetrate a firewall in a router/AP or a dedicated firewall without "help from the inside" (running malicious script on a computer, forgotten open ports with port forwarding, configuration mistakes etc… Continue reading How can malware or a hacker penetrate a firewall from external perimeter?