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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13k views

House owner can see who's connected to WiFi; what more can he see?

I live in a rental house, and use the house-owner's wireless network to connect to the internet. The owner can see who is connected to his wireless network and I had a few questions regarding this ...
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1answer
330 views

Maximum protection on a computer network?

I would like to secure as much as possible a computer I am using to sync sensitive data files from work to my home pc. The syncronisation is being done by only 1 software is there a firewall to allow ...
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3answers
543 views

Repudiation in Copyright Infringement (BitTorrent)

Seeing this question : How can alleged illegal downloading be detected? sparked a question I have had for a long time. How does repudiation/non-repudiation work in such cases ? Argument: It is known ...
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2answers
71k views

Router admin password was changed, how did this happen and how to prevent [closed]

Internet was extremely spotty for about a week. I was on/off cycling the cable model and router almost daily, before I tried to sign into my router (198.162.1.1). When I did I was presented with a ...
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3answers
4k views

Identify a process that uploads data

I am using the tool "Internet Traffic Agent" to monitor my in- and outbound traffic. It shows me clearly that over a period of approx. an hour, some process on my machine is uploading data, about 200–...
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5answers
4k views

Cannot identify or block unknown MAC addresses (Part 2)

Previously, I mentioned 5 unknown MAC addresses often connecting to my router, and noticeably causes my internet to be slow. Router: Tenda D303, Location: India, Connection: BSNL Unlimited 1Mbps ...
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2answers
267 views

Has networking using multiple “unrelated” connections to share an encrypted data stream been researched?

I'm not exactly an expert, so I'm hoping you'll give me the benefit of the doubt and try very hard to make sense of this... I've been thinking about a simple measure, which I'll call Multiple ...
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2answers
323 views

Which private-key encryption should I use for server to server communication?

I am tempted to write my own which covers: Checksum to ensure data is not tampered with. Long and multiple rotating keys so that it is (practically) impossible to decrypt. Will use /dev/random for ...
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3answers
968 views

Why there are uninvited incoming packets to my ADSL connection?

To verify this, I boot my PC from Kali Linux live distro. Before establishing ADSL/PPP connection, I start Wireshark and listen on any pseudo device. Then I create the connection to ISP network. ...
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1answer
307 views

Can accounts still be logged onto if Password Caching is not enabled?

This is kind of an extension of my other question.. If you were not storing any of the passwords locally (caching disabled), would a user some how still be able to circumvent around this security ...
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1answer
3k views

Does a network behind a NAT\modem firewall need a firewall?

Would it be justified for a business that is behind a SOHO router\WIFI to run a firewall such as PFSense, or is the firewalling capabilities in the router "good enough". For the most part the router ...
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1answer
573 views

Is using a local DNS cache server more secure than using a DNS server from a router?

Is using a local DNS cache server imore secure than using a DNS server from a router?
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1answer
3k views

syn flood size per second

Given the size of a TCP packet is 60 bytes, there is a SYN Flood attack on a computer made ​​by a 100 Mb bandwidth, the question is how many syn packets are sent in a second? Is there any formula for ...
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1answer
2k views

How to write Snort rules based on MAC address?

I would like to create Snort rules based on MAC addresses instead of IP addresses. Most devices on the network are DHCP assigned, and I would like to ignore certain traffic (ex: Dropbox) for some ...
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2answers
596 views

Shared Database and PCI Compliance

Say we have a cloud based web application which is SaaS. This application is to be made PCI compliant as a service provider, as client card data passes through the application. This application uses a ...
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2answers
4k views

How do APN hacks work?

I've been going through speed caps bypass of Indian ISP using APN hacks which involves either changing sever field or proxy field or ip-versions MNC. I am just curious how APN works in this case. How ...
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2answers
881 views

Separate networks on one modem for security reasons

I'm not very familiar with networking issues, but my current project requires me to create an environment in which I will have 2 clients, but client 2 cannot see where client 1 is connected to and ...
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4answers
909 views

Which of the TLS/SSL and IPsec protocols is effective?

Which of those two protocols is the most effective for sending data from a client to a server on a local network (knowing that I aim to use it for FTP traffic)?
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1answer
977 views

Intrusion Prevention Systems: NIPS vs NBA

I was going through the wikipedia article on Intrusion Prevention Systems. It states two of the four types of IPS as follows: Network-based intrusion prevention system (NIPS): monitors the entire ...
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1answer
122 views

For SSL certs, is some sort of connection to the issuing CA (or other network resource) required for the SSL connection to be established?

I was reading an article on creating a certificate authority, and came up with this question when I came to the section entitled "Distribute your certificates and CRL". Background: I am deploying ...
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2answers
117 views

Why do firewalls focus on tcp and udp?

From what I can see, most firewalls seem to focus on tcp and udp. Why is that? Is it impossible or at least very unlikely for malware to use other protocols/custom protocols?
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1answer
832 views

Network isolation for a single device

I'm planning to set up a local server (Minecraft) accessible by only one other person connecting from a static IP. It's on a dedicated machine that I can easily wipe (Raspberry Pi). I'm looking to ...
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1answer
450 views

Does SSLSTRIP in MITMF only works when the victim visits for the first time?

I just started learning MITM attacks and I use MITMF to perfom these attacks. I have one question regarding to sslstrip. I notice that sslstrip only works when we first clear the cache and history in ...
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1answer
302 views

Starting a new job after working at home for years. How to best protect data, secrets, and privacy in the workplace?

I have just started interviewing for new computer job after years of working from home. At home I feel very secure with how I protect myself from data loss and keeping my secrets secure. I backup ...
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1answer
494 views

What's a least-privilege way to allow node.js to access network adapters on Linux?

Linux naturally restricts all but superuser from pulling traffic directly from network adapters. In the case of Wireshark/dumpcap, setuid root is used ONLY for dumpcap, restricting the privileges ...
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1k views

How do I map all active wireless devices inbound?

In any residential building, there is a multitude of WPA2-protected wireless access points. Yesterday I was at a friend's and attempted to launch aircrack-ng against their AP (with permission). I was ...
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How do you secure your PC and Wifi at a shared office/co-working space like WeWork? [duplicate]

I'm fairly good with PC's but no expert. I'm at a WeWork (coworking) and connecting to WeWork's wifi network. There are a bunch of tech startups, so quite a number of people who could potentially ...
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2answers
867 views

RaspberryPi3 wont show fake AP created by Airbase-ng

Im using Aircrack-ng suite to apply an evil-twin attack with my RaspberryPi3 operated by Kali-linux on another RspberryPi3 with Raspbian Jessie. The steps are as followed: 1.configuring the apache2 ...

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