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Questions tagged [network]

Security of network infrastructure and network traffic. For questions about security of network equipment, topology, protocols, traffic, administration, and configuration. Related tags: [packet], [firewall], [network-scanners], [network-access-control].

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46 views

What ISP know about my local network when I use their ONU?

I have FTTP (Fibre to the Premises) and a GPON ONU given to me by my ISP. I know they can see hostnames and MAC of devices connected in ONU. If I connect my personal router to this ONU and then ...
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2answers
667 views

Firewalls vs DMZ

What's the difference between Firewalls and DMZs? These terms seem to overlap at time and I'm not clear on the difference. Maybe a DMZ is achieved using firewalls?
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1answer
147 views

Could my boyfriend be hiding his encrypted emails inside of my inbox? [closed]

is it possible that my boyfriend could be hiding his encrypted emails inside of my email inbox with my email address and I can't read them? And if it if that is possible is there way that I can ...
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185 views

Bad Connections Blocked

With a new Windows 10 computer, McAfee Livesafe is reporting nearly 20,000 bad connections blocked. I ran some tests from Gibson Research, including the UPnP Exposure Test and the All Port Scan. The ...
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0answers
33 views

Trouble connecting to LAN card (Lantronix Micro125) [closed]

I am having a tough time connecting to a LAN card (Lantronix Micro 125 'Embeded Device Server'). I can ping it, but the software I have to use to reset the card won't find it and the card doesn't show ...
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1answer
106 views

Can employer see your posting content on a public site when using their network on their hardware [duplicate]

Can the employer identify you as the person that posted on a website (you logged onto the system using their computer) if the computer is replaced by a new one?
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1answer
365 views

How a computer can infect others devices on the same network?

As I said in this post, my father is very careless about online security. Besides what I already said on that post, yesterday I saw in his android that the permission to install of third-party apps ...
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1answer
46 views

Testing Network layer encryption enabled or not

I am new to network security. I have a requirement to test whether the network layer encryption is enabled or not. How do I test this requirement? Are there any automated tools available?
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3answers
221 views

How to prevent an infected PC from infecting other machines on the same network? [duplicate]

My father is pretty careless about his security and this is not new. He even said to me that in the last year he used Tor to access some links just for curiosity because he read about it in some news ...
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1answer
74 views

Can we use network hub as an MITM sniffing device?

My intention is to analyze all network traffic which is coming to and originating from a network connected device I have. From the configurations of the device I am able to proxy all the HTTP traffic ...
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120 views

Google Home Hub Network Traffic on Port 8009

I noticed my desktop, that has never been used for anything related to google home or signed into the google account used to manage the Home Hub, that is on the same subnet was sending traffic to the ...
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0answers
113 views

Arpspoof not working properly

I'm testing MITM packet manipulation on the fly between two computers on the same switch, a layer 2 switch. I'm using a Kali Linux machine as the attacker and i have written a python script to ...
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2answers
306 views

Open ports on my NetGear router

I ran an nmap scan on my home router and I am seeing a ton of open ports. Is this normal? How do I go about closing them? $ nmap 192.168.1.1 Starting Nmap 7.70 ( https://nmap.org ) at 2019-03-16 20:...
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2answers
438 views

Does someone need to be connected to my network to sniff HTTP requests?

TL;DR Would a potential attacker need to have my Wi-Fi password and be connected to my network in order to read HTTP requests? Over the past year or so, I have made a few DIY home automation projects....
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1answer
376 views

Is it safe to use Orbot with the normal Firefox browser on Android

I noticed that when using Orbots "VPN Mode" that my normal Firefox browser works fine and when I visit check.torproject.org it says I'm connected even though I'm not using the Tor Browser specifically....
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22 views

Is this type of attack possible? [duplicate]

I'm wondering if it is possible for an attacker to spoof his IP address to look like mine. For example, in Facebook's connection logs, would it be possible for an attacker to log into my account while ...
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27 views

Nmap showing different open ports every few seconds [duplicate]

I'm running Nmap on an Amazon Web Services EC2 instance but between runs just a couple seconds apart, I'm getting new results. Is this normal? I'm seeing open ports then they don't show. I'm running ...
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1answer
118 views

Is using simultaneously a VPN on router and another on computer any good?

I know that the use of two VPNs on a machine is generally not advised for multiple reasons (security, stability, etc.) as well explained here : Connect through two VPN clients However I was wondering ...
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91 views

Loosing internet connection while connected to specific VPN server?

I have noticed a strange behaviour earlier today on my VPN on a specific server. When I run a trace route command while connected to VPN (on a specific countries server) my internet will not work for ...
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1answer
787 views

NMAP results inconsistent

I'm doing a NMAP scan that runs continuously. For some reason the results are not consistent. Sometimes it detects all the connected devices of the local network and sometimes only some of them. ...
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1answer
131 views

Is my VPN leaking or is this normal?

Hi when I am not connected to my VPN and do a route print I get one 0.0.0.0 entry in the Network Destination column. It has a gateway of 192..... When I connect to my VPN and do a route print I get ...
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1answer
130 views

Is it normal for my IPv6 to change?

My IPv6 is changing a lot, exactly three times in last three days (I saw on Microsoft's last activity), and all accounts that I keep login on my browser have disconnected. The actual IP is listed by ...
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1answer
42 views

Wifi usage and control [duplicate]

Can my messages and files either sent or received be seen by the wifi owner while am using their wifi? I am I'm some ones house and am using their wifi network for everything I do on Internet ...
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2answers
209 views

What are some examples of known scenarios of network attacks?

For example, it is possible that someone could spread malware with insecure wifi access point, but I don't realize how sending a bunch of network packets can result into a compromised computer if the ...
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1answer
57 views

Risk of giving untrusted IOT Device access to wifi

My issue isn't so common and I can't find an answer in the see of other IoT security issues. Let's say I have an IP cam, but I'm not even worried about someone being able to view the live stream, or ...
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29 views

How much VirtualBox device/ios emulator/blueStacks informatin can be logged/tracked by servers/ apps?

This question is intended to know if we can be tricked by Virtual devices emulators. How much logging information can servers/apps request to tell the difference? In the other word, Can we hide our ...
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125 views

Meterpreter Over HTTPS Proxy

I have a proxy server on the WAN as well as my box open to the WAN. I want this proxy server to (when it receives a shell), route it to my host so it can be the "man in the middle" between my ...
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1answer
101 views

Command injection with brace expansion

Does anyone have more experience with bash brace expansions when dealing with command injections that filters whitespaces? I am encountering most likely not a filtering engine, but an bad parsing ...
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1answer
31 views

Criteria for selecting fields and network protocols for fuzzing

I want to test a specific device connected to different networks using fuzzing. For each network interface, there are different services listening using different protocols, with open specification. ...
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100 views

IP blocking and TLS v1.3's Encrypted SNI

It is my understanding that TLS's version 1.3 would prevent censors or any other middlebox entity from knowing the SNI field and hence know what is traveling on the network, or which particular ...
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1answer
51 views

Finding how many filtered ports of a host that would be listed as “filtered” on Nmap

I just started working on nmap and was confused by this question. I'm unsure if I understood it correctly, so I appreciate your help with this. Using Nmap, find how many ports are filtered in testphp....
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76 views

Pros and cons of extending L3 to the network edge (routed access layer)?

Scenario: Greenfield network rebuild for a SMB distributed over ~10 small campuses with 1 fairly large central campus spread over ~ 100 Miles. You have almost no Cap-ex budget restriction (within ...
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1answer
185 views

Truly Disabling Session Tickets in Windows 10 Schannel

In windows 7, session tickets were disabled by disabling schannel cache, example: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL] "EventLogging"=dword:00000004 "...
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1answer
133 views

Do ISP’s in America keep IP assignment logs forever? [closed]

I read that the majority of ISP’s keep theirs for at least 180 days. However, does anyone know how long charter spectrum keeps theirs? Do ISP’s retain their logs forever even if they are using a DHCP ...
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2answers
159 views

Is AWS subnets enough for segregation of networks? or do we need VPC?

Is AWS subnets enough for segregation of networks with the all security groups? or do we need VPC to really issolate two application from each other?
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3answers
252 views

Roommate Network

I'm living with some roomies that I sort of know and occasionally I use their internet. I'm pretty computer savvy but know very little about networks. None of them are too computer savvy and I have ...
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1answer
135 views

Security auditing - disabling IP forwarding and ICMP packets redirects

I've recently started working as a security auditor and my mentor gave me some homework to write an Ubuntu security audit script so that I'll get to learn to use batch scripting and understand ...
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1answer
154 views

The Girl in the Spider's Web: SCSI hack?

In the movie, the main character is shown tapping into a network of surveillance cameras. She uses a SCSI connector which allows her to send the camera footage to a remote computer. I know it's a ...
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1answer
149 views

Windows Defender Network Protection component really aggressive, what to do?

Has anyone noticed that the Windows Defender Network Protection component (part of Exploit Guard) can be REALLY aggressive? Sometimes, in order to use a program, app or else, I need to set it to "...
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1answer
98 views

Can an unprivileged program modify an HTTP request response on the local machine?

Imagine you have a simple GET request going to server 123.456.111.222. Your client executable creates a winsock on the server IP (TCP) and sends the HTTP request (unencrypted) to the server. If a ...
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1answer
78 views

Can I spoof a specific AP of a network?

My college wifi requires a certificate installation and also is very unreliable. Therefore, I prefer using my mobile data when I am on campus. But the college has its own app for attendance taking and ...
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1answer
157 views

Techniques used by highly sophisticated entities to snoop on VPN or SSH traffic?

It is mentioned in almost every where that very strong agencies, and governments are able to watch the online activity of the people. Aside from techniques like attacking computer networks, and ...
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2answers
2k views

How to connect a Raspberry Pi IDS to the home router to detect intrusions network wide?

I'm configuring a raspberry pi IDS/IPS with ELK stack on a separate machine, my problem is to connecting it to the router in a way it can read traffic on the whole network and drop the suspicious ...
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1answer
61 views

network icon on lock screen, group policy

In an office setting, where it is an open space design, should I ensure that the laptop has 'Do not display network selection UI', enabled? Why or why not
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0answers
42 views

UDF Client, Socket Binding and Tags Hack - Need Help [closed]

Background For a long time now, I've been working to remove a persistent, if not permanent, malware presence on my computers and phones. Every attempt at removal has been unsuccessful to date, by me ...
3
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2answers
253 views

Is it dangerous to connect to a public unsecure wifi network a few seconds before connecting to a vpn?

This might be common sense but I just can't seem to get it. I purchased a vpn subscription for security ( I travel a lot therefore I am dependent of public wifi networks ). I have configured all the ...
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1answer
137 views

ARP poisoning NAC

I need some help in understanding the technique of Genians/Trustwave NAC regarding ARP poisoning. As seen here Bypassing Trustwave NAC, it looks like a good method, but I don't simply get it. With ARP ...
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1answer
108 views

How are victims targeted from outer networks (WAN)

I started getting more interested about security about one year ago, and from all the things I have learned up to this day I never knew how particular victims are targeted from the attackers from ...
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1answer
132 views

How do I know that the request and response is using encryption protocols in burp suite?

I know these things can easily be done on wireshark, tshark, etc but is it possible to know that the request I forwarded and the response I received is using protocols such as TLS, TLSv1.2, TCP, HTTP, ...
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32 views

Can my work's Wifi see the video I sent through Snapchat [duplicate]

So I accidentally sent a video over Snapchat at work using my works WiFi on my own personal device. To connect to the WiFi I have to put my work user ID and password in and I’m pretty sure some ...