Questions tagged [lan]

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Comparing two ways to access home network remotely

I go from location to location sometimes and I want to be able to access my resources from my home network like SMB shares or my ProxMox server. Obviously, since these services are on my LAN, I cannot ...
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2 answers
106 views

Can devices in a WAN view/connect to devices in a LAN?

I live in an apartment building that provides cable internet via an ethernet cable that reaches my place. I connect this cable to my WAN port and distribute it internally via wifi through my password-...
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Do I need to create SSL for HTTPs over a local network?

I have a server that is accessed only via local network in my VPS, as it is local it does not have a domain, it is accessed only via IP (ex.: http://localhost/routine.php). This server will only be ...
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HDMI with Ethernet: Network Security Risk?

I recently found out that HDMI cables (v1.4 and over) have ethernet capabilities for higher res output, so I want to know one thing: Say I have a PC/laptop connected to the internet, and a monitor (...
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Is every packet in a home Wi-Fi which has say, AES password for connection, encrypted using the same password?

If there is an intruder in a LAN who knows the encryption type and password, will he be able to monitor all the packets which are in the LAN? Suppose someone on the LAN is visiting HTTP sites, which ...
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2 answers
635 views

Does VNC need hardening when inside LAN (home network)?

This is a very newbie question, but I would just like to make sure that I'm not missing anything: If I connect via VNC protocol to my various servers etc. inside my own LAN (home network), then should ...
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259 views

Avast Remote Access Shield is blocking unknown remote access attempts to my computer (Win10) coming from a MacBook device on my LAN. [Confused]

I need help understanding what is happening on my LAN and determine if a malicious attack is taking place. The "attacks" started to occur for the first time last night. This morning, I open ...
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3 votes
2 answers
314 views

How is my school blocking new Internet traffic after midnight?

My school supposedly cuts everyone's connection at exactly 12:00am. Although the network is still there, Windows shows the "no internet" sign when connecting to the network. However, the ...
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Is SSL Always Required When Communicating With Internal Client/Servers?

I'm in the planning/design stages of a project which will incorporate an internal server that communicates with internal clients. A quick summary of how this server will behave is as follows: end-...
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Unknown device on my home's local network. What to do about it?

My home router's configuration interface shows a device I don't know, connected via WiFi to my local network. According to the router's history, that device connected to it several days ago. It is ...
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Is a LAN to LAN with different subnet configuration secure?

I plan to implement the following network configuration : Internet [(cable A)] Router A (192.168.0.x)[(WAN:cable A)(LAN1:cable B)(LAN2:)(LAN3:)(LAN4:)] Router B (192.168.1.x)[(WAN:)(LAN1:cable B)(LAN2:...
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Risks of running network services on a LAN hardware firewall

I am planning to set up a dedicated hardware firewall like Protectli and run a pfsense on it. I already know that: it is a good practice NOT to have a wireless adapter on the firewall unit it is ok ...
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Is it possible to make a remote server part of VPN so that only machines within a domain network can access the server?

First, let me describe the problem I am trying to solve. I have a domain-based network. My Source Control server resides on this network. This meant only devices connected to the network (part of ...
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Using a WLAN router to create an access point

Would the local network administrator in my dorm be able to figure out that I'm using a WLAN router to access their wired internet connection? Assuming I'm not broadcasting the SSID.
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578 views

Unknown Google Account Signed into Browser

An unknown Google account is signed into Firefox on my Arch Linux machine. The computer is in my apartment (where I live alone) and I lock the screen when I leave. Some observations: The unknown ...
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1 answer
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What do people mean when they talk about "hackers gaining access to our network" (at home)?

Have I fundamentally missed something between the time when I sat with my 486 IBM PC in the house, fully offline, and today? Do normal people actually set up complex local networks in their homes ...
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How to encrypt data on local LAN (without Internet)? [duplicate]

I'm wondering what is the bank-grade encryption for traffic between a client (say, Windows app) and a server, both on local network. It looks like to use ssl encryption, they must have Internet access ...
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2 votes
1 answer
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End-2-End and server to server encryption over home network

I am setting up a private home management system containing several daemons/servers and a few clients to connect from. I am trying to achieve end-to-end encryption with the most monitoring and health ...
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1 answer
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Considerations for securing a computer on an open LAN? [closed]

Im about to move to a serviced office where they have an open LAN. Eg. no VLANs for individual companies. The room itself is locked so the main treats would be from cyber security, rather than ...
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1 answer
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Local area network multi-device network communication protocol

I am planning to build a local area network that will have one Master device and multiple Slave devices. The communication should be able to handle only ON/OFF functionality of the devices (devices ...
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2 answers
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Is using a network sniffer for host discovery a viable option?

Would a packet sniffer like tcpdump be effective for network host discovery and if so how effective is it compared to more active methods such as the infamous network mapper nmap?
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1 vote
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Need to encrypt RTSP over LAN

I tried googling everywhere, but got no help with what I needed specifically. Let's say I have several IP cameras on a local area network. This LAN will NOT be connected to the Internet. The IP ...
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-2 votes
3 answers
798 views

How can I stay anonymous in a LAN without Internet access?

I need to perform attacks (SQL injection) on a server. I thought of using a proxy to be anonymous, but the topology is a LAN without Internet access. I have no idea of the protocols used in the ...
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2 votes
2 answers
251 views

If two servers are in the same private network, is it better for them to talk to each other through HTTP or HTTPS?

Is anyone kind enough to tell me what actual companies do about the matter? This is assuming the company doesn't run the risk of having insiders sniffing the packets.
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Securing connections to a web server hosted on a LAN

I am hosting the same website in two locations: A public location https://mysite.com (AWS hosted) A location on a LAN with local DNS https://mysite.local. mysite.com is a service which targets ...
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How safe is it to allow key-based SSH access within LAN?

So this is my setup: We have a few machines in a LAN, used for computation, which me and my colleagues access from the outside with SSH. All our accounts on the LAN machines are managed and shared ...
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1 answer
186 views

Are Routers Liken to a Firewall? [closed]

When my ISP came to set up my fiber internet, I told the technician I didn't want a router included within my wired network. He successfully managed setting up the ONT(Optical Network Terminal) ...
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2 answers
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Threat of a Windows XP machine connected to a local network via WIFI (today in 2018)

After seeing this question I am wondering what could actually happen if a Windows XP machine was connected to a local network via WIFI. Imagine the machine will be used to browse the internet, read ...
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3 votes
4 answers
1k views

I started to learn about MITM attacks, and I can't figure out few things

I just started to learn about MITM attacks, and I can't figure out few things. I have few questions and appreciate all the answers. If the attacker is already in my LAN why does he need to trp to arp ...
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2 votes
2 answers
5k views

Why is NAT referred to as "the poor man's firewall"? [duplicate]

How exactly does NAT protect a network? How does it relate to a firewall?
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-1 votes
2 answers
886 views

Can an infected device within the LAN still be a threat if turned off?

Scenario An attacker successfully infiltrates the LAN and infects a device that acts as a future bridge. Once inside, the infected device can communicate with a malicious source outside of the local ...
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7 votes
1 answer
2k views

Second router setup for secure subnet

I have a BT Smart Hub as my router which has no guest network functionality, I also have a Netgear Nighthawk D7000. Initially I attempted to use only the D7000 and take advantage of the guest wifi ...
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1 answer
170 views

E2E Encryption in a LAN

I'm looking to protect data in transit around the LAN from file servers both Linux and Windows based. I think the correct solution is IPSEC as I want a blanket solution for both types of operating ...
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0 votes
1 answer
95 views

Process of finding device hostnames on LAN

Is there a reliable way to retrieve hostnames from LAN devices without having to install extra software or performing nmap-style OS fingerprinting? I'm ideally looking for either a protocol that has ...
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1 vote
0 answers
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Spoofing an IP/MAC address to avoid ICMP Destination Unreachable being sent back [duplicate]

As far as I understand UDP flooding the idea is to send UDP packets across all ports from e.g. Alice to Bob, and get Bob's machine to check who listens to certain ports and generate many ICMP ...
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  • 111
1 vote
1 answer
457 views

IP Address leak on LAN scan

I am using VPN and encrypting my web traffic through them. However, When I do Lan Scan I can see my real ip address. All other websites, IPleak.net, WebRTC leaks, DNS leak, Email Leak and IPv6 leak do ...
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2 votes
4 answers
6k views

How exactly do you protect against ARP spoofing in large LANs?

No matter how much I google I can't get a definitive answer. Static ARP entries: Static ARP addresses prevent only simple attacks and do not scale on a large network, since the mapping has to ...
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7 votes
1 answer
12k views

Wireshark can't decrypt WPA2 LAN traffic

I want to decrypt my own network traffic. I have Linux Mint on Samsung Laptop with a AR542x Wireless Network Adapter. Open Wireshark, start capture in promiscuous mode & monitor mode and I ...
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13 votes
1 answer
3k views

IP address assignment for LAN

Does it make any difference from a security perspective to use any other IP address ranges than RFC1918 addresses within LAN segments?
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2 votes
1 answer
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blackbox pentest newbie - find valid internal IP adress from unknown range

I`m a beginner and would like to know, how can you find a valid IP adress to start your scan, if all you have is the LAN cable....nothing more. No DHCP is enabled. Any hints or clues on how to figure ...
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