IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [ethernet]

39 questions
73
votes
7 answers

Preventing Ethernet over power

I'm an electrician doing a job at a secure site. The client is concerned that someone could plug an Ethernet over power (EOP) connection into the switch and then connect elsewhere in the building. Is this possible and if so, how can I prevent…
phil
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33
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3 answers

Can malware be transmitted via a USB charger plugged into a wall socket?

I have a smart phone that I often plug into a wall socket for charging via a small adapter that rectifies the AC to DC power and transforms the voltage from line (120V or 240V) to 5 V DC, probably using a switching power supply. Standard stuff. I…
Stone True
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26
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3 answers

How to check if a Wi-Fi network is safe to connect to?

I always feel scared to connect to hotel, airport Wi-Fi etc. I feel that if the Wi-Fi router is hacked, my personal information can be collected by a hacker. How can I determine if a Wi-Fi network is safe to connect to? Also, what can an adversary…
black panther
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8
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2 answers

How to track down a rogue laptop connected to an un protected ethernet socket in a big organization?

I would like to know ways of detecting rogue laptops connected to Ethernet sockets not properly secured in a big organization that has a plain network segment. I know that this can be prevented using some techniques like MAC filtering, but suppose…
kinunt
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6
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3 answers

Can an attacker sniff physical network traffic through WiFi?

So, I am wondering - is it possible for an attacker to sniff traffic on an Ethernet connection if they are not physically plugged into the modem/router hardware but they are connected through wifi? In this scenario the attacker is connecting via…
user_loser
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5
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3 answers

Ethernet over power: security aspects

Our company is moving to another facility which has no LAN cabling, therefore we are considering using ethernet over power. We would like to avoid our data being transmitted out of this facility and also that only authorized people logically "join"…
Malo Polsky
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4
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2 answers

Ethernet security

I have a simple question that many people probably have and yet there does not seem to be a topic on this. I am visiting a company for a meeting and I have my laptop with me. This company is our competitor and I have some private data in my laptop.…
eli
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4
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5 answers

Encryption for home ethernet?

I recently had my home wired for gigabit ethernet, which is awesome, but left me with a short ethernet run that is actually outside the walls of my house. How can I secure this link against someone splicing in? Ideally I'd like to attach something…
Drew Shafer
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3
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1 answer

Security criteria for selecting a network switch?

I am looking to purchase a switch with 24+ ports. The set of security criteria that I should bear in mind when selecting a switch is not clear to me. I have tried to take other networking security issues into account already, and I'm only asking…
taltman
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3
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1 answer

Security onion only Seeing broadcast traffic and its own traffic

I am attempting to test my new security onion install. I have it set up on a static IP Ethernet adapter in a virtual machine with an IP of 10.0.3.47 When I go launch Sguill, it seems to work well enough, but it only sees traffic broadcasts to…
mberna
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3
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2 answers

Is a wired public network more secure than a wireless public network?

I use wireless and wired networks at my university (which do connect to the Internet), both of which I connect to using my own computer. To access the Internet from these networks, students and staff must login to a portal and enter institutional…
Daniel
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4 answers

Spoof another IP address in the same network,will the spoofing source get the response?

I have read some articles about IP spoofing. Briefly speaking, IP-spoofing means the attacker uses a fake IP address in the IP header, to pretend this IP packet is sent by another machine. The attacker can use it to do something like…
柯鴻儀
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2 answers

How can I tell if my ethernet connection is being sniffed?

I read in another post that wired traffic is not protected: The only real additional threat that a malicious network administrator would pose, is that they have access to the wired side of the network also. On the wire, traffic is not protected…
user7149
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2 answers

Is bugged CPU mean "gameover" for whole Computer?

I'm looking for answer on such question. Imagine that CPU bugged on the factory simply like Blue Pill, but for the network's interconnections. How exactly firewall of OS could protect station against Hardware Trojan Horse intercommunication? E.g.…
polar bear on the white snow
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4 answers

Can anyone tell if a wireless router is plugged into an Ethernet port (without actually seeing it)

In a large network if there is an Ethernet port in the wall, is it possible to tell if a switch or wireless adapter is plugged into it? (I'm talking about the cheap home routers - with the built in switch). In other words would packets appear…
Celeritas
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