Network Security - securing network infrastructure and connections

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1answer
367 views

How the shopkeepers are getting MAC address of wifi enabled smartphones

It is clear that some big mall's are tracking all the wifi enabled mobile phones before they are connected to the network..how can it been done? I have the similar issue.. how to get the MAC address ...
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3answers
402 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
3k views

How to get MAC addresses of devices which are not in the network

Can I get MAC addresses of devices (mobile phones) which are near to my network but not connected to it? (Linux) I have been trying to get the MAC addresses of devices connected to my network through ...
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1answer
151 views

Are there any free, premade penetration testing labs? [duplicate]

I've already assembled a lab consisting of Kali, Metasploitable, and a Windows XP machine, but are they're any premade lab solutions available that offer up a bit more complexity or even predesignated ...
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6answers
1k views

Alternative to VPN

We have a network that is completely closed to the outside world. It needs to be. Problem is we need to remote into a server on this network once in a blue moon for diagnostics. We've discussed ways ...
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2answers
41 views

Will separating internet activity and offline activity secure a host?

Let the diagram below be a representation of a LAN. - let R be the interface between the LAN and the internet. - H be host connected to the LAN. - F be a firewall implemented using a virtual machine ...
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3answers
192 views

What are reasons why one shouldn't run Tor at a network level?

I've been considering proxying all web traffic on my network transparently through Tor and dividing up my bandwidth to share with the rest of the Tor network. Practically speaking, what are some of ...
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5answers
1k views

What firewall settings on a Macintosh are the most restrictive, while still permitting casual internet use?

I don't want this to be subjective, so I'll try to make the requirements as clear as possible. On a Mac with Snow Leopard, how can I set up the firewall rulesets that allow ONLY: Using the internet ...
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4answers
155 views

Comprehensive audit of firewall - is Internet truly not accessible?

We have many Linux servers in several co-locations over the world. By design, these machines generally should not be able to access the Internet. Depending on location and role, some sites may have ...
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3answers
322 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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3answers
219 views

Could a neighbour see my traffic when we have cable Internet?

Is it possible that a neighbour could see my traffic (*), when we both have cable Internet? Or: Under which conditions might this be possible? I would assume, "Never!", but after reading these two ...
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3answers
24k views

How to bypass restrictive mac address filtering on home network (not malicious)

Background A short sketch of my situation before I formulate my question: I am on a large home network, which is privately administered by a couple of admins. The network consists of a lan and a ...
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1answer
59 views

WLAN disconnected for sure?

If my PC has NO on-mainboard WLAN and there is NO WLAN-adapter card and NO USB WLAN-stick installed, how sure am I that there is really no WLAN connectivity possible ? I.e. can I really disconnect ...
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6answers
1k views

Defamatory post - obtaining evidence tracing perpetrator right to his laptop

A month ago, someone posted an ad with my personal details, including my home address, my phone number and my photo on an ad with very a very defamatory write up. What followed was a week of calls ...
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2answers
197 views

Can pipe | shell | nc > pipe achieve remote shell?

In one of the articles I have came across an exploit of Dell devices that said when you trigger the following line of code (executed somewhere in php) you will get a remote root shell : mkfifo ...
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2answers
140 views

Getting detailed information about an infected website

I have a set of bad URL's. I want to know the nature of infections affecting these URL's . Running an online scanner such as VirusTotal gives me some basic information from various engines about the ...
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2answers
359 views

wireshark does't show HTTP requests from other devices

My machine along with several other machines are connected to wireless router. When i open some http page on same machine(M1) where wireshark is installed, it captures the packets such as HTTP GET or ...
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1answer
117 views

How to deal with websites with poor encryption?

I'm trying to access a website over HTTPS. However, it appears that it uses weak encryption: specifically, RC4. Is there a way to improve the security of my connection to the website? I've been ...
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0answers
158 views

802.11 Authentication/Association and WPA/WPA2 authentication (Four-way handshake)

So I have read that 802.11 standard requires stations and APs to go through the authentication and association before communication can take place. I also know that WPA/WPA2 has its own authentication ...
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4answers
271 views

What are the main security considerations that must be taken into account if you intend on creating a (localised) whistleblower website?

Also: Is it something that can be achieved with limited funds? I ask because I am intrigued by the obstacles that are in place.
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0answers
41 views

Multiple Independent level of security vs Multi-level security

I am looking for a way to isolate two different networks from each other. Suppose we have 2 different network (public and private). I am looking for a way to connect to these two network via single ...
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2answers
489 views

Has there been any documented cases where hackers have hijacked the phone number to a business?

Has there been any cases where hackers have taken over the phone number to a business, by creating a phone number in the same area code, setting up a virtual PBX / Asterisk system, routing all calls ...
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2answers
1k views

Unidentified public network sending traffic through my computer

I'm having a problem with one of my computers. I suspect it's being used for something malicious. A few weeks ago my internet connection went down, I called my ISP and they told me that no MAC ...
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7answers
327 views

How does an IDS identify a computer ?

How does an IDS identify a computer on the network. I mean do IDS' actually check whether a device is actually what it claims to be ? If so what factors does it check (MAC etc) ? For e.g. if a ...
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2answers
1k views

Do Simple Linux Servers Really Need a Non-Root User For Security Reasons?

Playing devil's advocate, Let's assume I purchase a Linux server from a hosting provider. I am given a password for the root user and am told I may login using SSH. The only purpose this server has ...
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1answer
129 views

What good does the Kerberos Authentication Server

I currently try to understand the Kerberos protocol. And I think I understand the parts of it. How Alice gets a ticket from the Authentication Server to authenticate herself to the ticket granting ...
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1answer
168 views

Cryptic threat names

I have logs from a security appliance from Damballa which has cryptic names for threats observed in a network which I am trying to make sense of. Some examples of these threats are "RedTreeBruisers" , ...
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3answers
651 views

How to check if URL/ IP belongs to a zeus bot

I have a set of URL's which might be Zeus hosts / C&C servers since my security appliance says so. Is there a way to check if these really belong to Zeus?
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3answers
3k views

Nessus vs third-party scans

As part of our PCI-DSS compliance process we get scans done by a third party. Based on the form and wording of the output, it's pretty clear they're using Nessus for most of their heavy lifting. Same ...
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1answer
88 views

Is there a way of determining if tor is running on a remote machine?

In most of the companies, IT guys block some sites and by using TOR or other VPNs people walk around these blocks and gain access to blocked content. My question is, assuming TOR is running on ...
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4answers
456 views

How does one go about network forensics investigation with no prior knowledge?

I am being asked to perform a forensics investigation on a network. The reason being that for the past few months strange things are happening on the network. VLANs are being deleted, configuration ...
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0answers
187 views

Proxy via pfSense and exclusions for DNS

I have posted this to NetworkEngineering.SE, as that seems the more suitable audience for this question. I will leave this question open here but am happy to see it closed. I just did not want to ...
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0answers
90 views

Disable HNAP on D-Link router

I'm concerned that Home Network Administration Protocol (HNAP) is a serious vulnerability that exposes consumer network routers to remote management by malicious entities such as government ...
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1answer
118 views

Are Internet speed tests an attack vector?

I've been performing lots of speed tests lately due to, among some other random things, an Internet programming class and getting Google Fiber hooked up. Then I realized that SpeedTest.net uses a ...
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4answers
635 views

Has my network/computer been breached?

I'm not sure if this is the right site to ask, so I apologise if it isn't, but here goes. A while ago I started noticing some odd behaviour. My Gmail account was compromised, it seemed, and I had to ...
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3answers
1k views

Advantages of separating Web server from Database

What are the security advantages of installing the database of a web application on a server other than the one containing the web server?
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2answers
105 views

Proxy traffic via MITM script

I want to log and modify outbound traffic on a Linux machine. I currently have one program that sends requests out to the internet, I would like to process these requests and their responses via ...
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1answer
56 views

Bridged routers security

I am trying to secure my network from some infected computers(the owners dont seem to understand what security means) So I have a second router to make a bridge. What would be the best approach at ...
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3answers
6k views

Config Server Firewall: What Outgoing ports need to be open for wget and apt-get install?

I am just configuring CSF and I have to specify my outbound ports here. I am trying to close as many as possible leaving only what I need open, however what do I need to leave open for wget? # Allow ...
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2answers
135 views

What if I've been hacked and my IP is static? [closed]

My computer has a rootkit of some sort and the attacker can see everything that I do on it. I need it to do something related to banking, so I have to secure my computer first. I have a CD of windows ...
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4answers
725 views

A firewall without any extra features [closed]

I have Kaspersky Internet Security (KIS) installed on my system. I always keep it disabled, yet using a few practices, I kept my system virus free for years: I disabled autorun using these tricks; I ...
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0answers
78 views

What causes wifi network connections to timeout? [closed]

i was wondering what actually causes wifi network connections to timeout. for instance, say my laptop is connected to my wifi and i yank the battery out such that my laptop can't send any proper ...
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1answer
51 views

How to calculate CVSS of an attack so that it matches those in CVEs?

I have drawn an attack graph for a file-sharing application (eg. Dropbox) where a database stores details of virtual machines Eg. memory space left, etc. I've listed some possible attacks: The ...
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3answers
43 views

Splitting IP suite?

Is it possible to split the TCP/IP suite layers? I mean to get the original data packet with its all headers & trailers out of the Link Layer before delivering them to the physical medium, and ...
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2answers
259 views

Isolating host machine from external network

How to prevent a host machine from sending/receiving packets with the following network configuration: eth0 - physical NIC :: not configured; tun0 - virtual NIC for VM which role is the gateway for ...
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1answer
202 views

How should IPSec be configured to provide a protection at least as good as my current Stunnel configuration?

In private network (as in using a private IP address space) at a cloud provider, other customers have access to the same private network. I have secured the communication between many hosts and ...
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3answers
914 views

Detecting(and locating) rogue DHCP server on a local area network

How would we detect and locate a rogue DHCP server on our local area network?
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2answers
220 views

What could be the reason for the high traffic on the local network? [closed]

In our small company we have very high traffic outbound from local network to server which is getting blocked, and slow downs our server respond time. Especially at night. I am not security ...
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1answer
161 views

How CDN operator will decide content fo me if i am using google public DNS [closed]

As i saw most of the internet is being load balanced even at DNS . And DNS load balancers takes decision on behalf of client's DNS . So I Am just curious to know if i will use 8.8.8.8 as nameserver in ...
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5answers
23k views

Is it still unsafe to email credit card number nowadays?

We all know not to do it, but someone emailed my credit card number and cvv code to my gmail. I'm wondering if the risk is so low I don't have to call to cancel my card. The email is sent from a ...