IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [lan]

41 questions
13
votes
1 answer

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?
cyzczy
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7
votes
1 answer

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 feature but I couldn't get the setup right so that…
Stibstibstib
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7
votes
1 answer

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 receive all the packages around me. The problem is that I…
user135023
3
votes
2 answers

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 strange thing I have been noticing is that although the school…
Andy_ye
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3
votes
0 answers

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 named "PC-24". I know for a fact that this device is…
Hey
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3
votes
4 answers

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 spoof or dhcp spoof, can he just sniff all the…
Mc As
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2
votes
1 answer

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 check processes I can in order to create trust in…
Xcrowzz
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2
votes
1 answer

Considerations for securing a computer on an open LAN?

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 physical. Im trying to thing through the possible…
sam
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2
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2 answers

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?
TheLinuxPro
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2
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2 answers

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.
Brobbry
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2
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2 answers

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 via LDAP (resides in the LAN, but is only…
nikitautiu
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2
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2 answers

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 and write documents, so think of the usual basic…
reed
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2
votes
2 answers

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

How exactly does NAT protect a network? How does it relate to a firewall?
Kellen Stuart
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2
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4 answers

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 be set for each pair of machines resulting in…
Leftover
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2
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1 answer

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 out a valid IP for usage? Thank you all for your…
honeypot2k
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