Network Security - securing network infrastructure and connections

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1answer
78 views

Is it possible to sniff traffic of a remote network? (With admin access to router)

Me and a friend of mine are simulating a widespread scenario where router configurations are untouched (default passwords) and are visible from the internet. Him, acting as the victim, will constantly ...
3
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1answer
70 views

Ideas on how I can fragment captured network traffic?

I am trying to create a lab environment where I can analyze common IDS solutions (starting with Snort specifically) and their ability to reassemble fragmented IP trains. I have a collection of ...
3
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1answer
116 views

How to sniff [possibly encrypted] TDS protocol data from the host the client application is installed on?

Let's say, there is an .NET application on a windows 7 host where I have administrator's access rights. The application works with remote MS-SQL server which I don't control, it also seems that the ...
2
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1answer
65 views

running botnet for analysis

I a very curious to understand botnets practically. I want to run a p2p botnet (storm or waledac) for analysis and learning. I have mainly two issues: Where can i get access to binaries of either ...
2
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1answer
341 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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1answer
63 views

Segregating a Printer in my Enterprise Network

I have a EAP-TLS network at home which I've managed for some time now. I just got a new Brother HL-5470 printer so I can finally print things at home, which is really nice. The only problem is that ...
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1answer
135 views

Snort even though working properly does not report majority of rules

I have installed Snort 2.9.7.0 and it does not detect majority of attacks, such as nmap port scans, downloading exe files, opening documents containing keyword "root". I use Snort together with ...
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1answer
281 views

secure use of psexec?

As of March 7, 2014 PsExec now "encrypts all communication between local and remote systems, including the transmission of command information such as the user name and password under which the remote ...
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1answer
97 views

User Binding Request with credentials in Lync Dump

I've dumped a call between two lync clients and saw that there were some UDP packets that look like this: Server -> Client 1132 14.495362000 <serverip> <clientip> STUN 146 ...
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1answer
140 views

How to configure Kismet to redetect same BSSIDs in a loop?

So I am working on a tool to detect any wifi device using Kismet. When I use Kismet, it works fine, but my problem is, it detects a device once, and until the MAC changes, it wont detect it again. ...
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1answer
74 views

Identifying the correct ssid

Suppose a wifi network is present with a given ssid.Now I create a hotspot with the same ssid as that of the original network.If a user tries to connect to the wifi , which one will he connect to?Also ...
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168 views

WLCTL protocol detected by sniffer in an Android tablet

I detected that my rooted Android tablet had a slow connection. Trying to find what is taking the bandwith, I installed a firewall (DroidWall) and I blocked all the applications thinking that one of ...
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1answer
32 views

Unsecured Guest access on Macbook Pro

I am concerned that my personal, home based Macbook Pro guest network access may be being used by an outside source. Is there a way for me to identify user access, time logged in / out, etc?
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1answer
103 views

Designing and implementing a secure epayments system with RESTful API

I want to design and implement an epayments system (I will not be handling credit card payments). The system will have a RESTful API. I am already familiar with RESTful servies, and have built a few ...
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0answers
78 views

WPA2 ephemeral key derivation

I'm trying to learn how ephemeral keys in WPA2 4-way handshake are derived. Starting from 4 EAPOL packets sniffing, I successfully derived PMK and PTK reading ANonce, SNonce, and knowing ASCII-PSK ...
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49 views

How to design a right VPN connection for an organisation (Interconnected MPLS link or Individual FW)

Thanks in advance for your advice We have to implement VPN connection for nearly 7 countries Option 1 : As we have private MPLS link to all 7 countries. It is been outsourced Third party. They ...
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114 views

Performing an airport scan on my Mac for available WiFi networks pulls up multiple SSID with different mac address. What's going on?

I performed the following command to search for available WiFi networks in my apartment complex: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport scan | grep OBC I ...
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0answers
125 views

Is the GTK or MIC in the unencrypted portion of a WPA protected frame?

In order to decrypt traffic you must have all 4 portions of the WPA Handshake. In WPA protected data frames, is there an unencrypted portion of that frame that has some sort of identifiable value to ...
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95 views

Distinct databases with the same Kerberos Authentication server

Should two deployed applications within a private network requiring distinct databases (for storing their own users credentials) require distinct Authentication servers (implementing Kerberos)? Or is ...
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37 views

Host-based security architecture for web server network

I am begining with network security and after studying for a while about often used technologies I got to this architecture for my home server (sorry it is not in english). I considered 3 basic ...
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51 views

ARP poisoning question

I'm writing a program that detects ARP poiosoning. My question is: How can I b sure my LAN hasn't been poisoned? Yes, I can use my settings and find the IP address of the default gateway and yes I ...
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33 views

Is a direct SIP video call (encrypted) between two computers more secure than going through a registrar service?

I learned recently about ZRTP-encrypted video calls using an SIP client, such as Jitsi or Linphone or Blink. I was able to make a direct encrypted video call between two clients on the same local ...
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66 views

How can I launch DHCP starvation attack in WLAN?

In WLAN, due to MAC association on Access Point (AP), I can't send the DHCPDISCOVER messages using random MAC addresses. But if I keep my original MAC address as the source ethernet MAC a and random ...
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69 views

Why would home routers accept incoming DNS traffic?

I stumbled upon an interesting paper (PDF Link) where researchers found out that more than 58% of the DNS open resolvers that are blamed in DDoS attacks are in fact home routers distributed by ISPs to ...
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79 views

Traffic anonymization through routing - software and algorithms

I stumbled upon an interview with "the grugq" in which he is talking about how hackers anonymize their traffic, i.e. hide their original ip address (- this is also what I will mean by "anonymizing" in ...
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48 views

Key Distribution using multicast

I am trying to come up with a solution for a system where i need to generate a key (Kn) from time to time and distribute it to a large number of servers in a private network. Since it has to be a ...
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176 views

Security risk of connecting one mobile device to another mobile device's hotspot

Is there any risk when connecting an Android Phone to a [Verizon] iPhone's Hotspot? If there are I'd like to know about solutions. The Android Phone will basically be tapping the data plan of the ...
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69 views

Local lan drive by download

Basically, I'm testing a local network, on which I'm able to use ARP spoofing. I now want to try and infect one of the Windows boxes on the network with a backdoor. I could inject an iframe into their ...
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66 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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348 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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187 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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80 views

Should I use a VM firewall or not?

I am managing a couple of VPS-es on an old platform I would like to no longer maintain. We used a widely used commercial VPS control panel to create the VPS-es in question. The customers may ...
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19 views

How do TSC (TKIP sequence counter) calculate into WPA?

I'm reading about 802.11, from IEEE's pdf (IEE pdf), from page 1191, and in particularly I'm reading about TKIP. And to decrypt and to encrypt used a TSC (TKIP Sequence Counter) as you can see in ...
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25 views

Does NDP (Neighbor Discovery Protocol) reduce ARP (Address Resolution Protocol) attacks?

I read the comparison of NDP with ARP but am uncertain if NDP does reduce any amounts of ARP attacks, given that with NDP, ARP is not used for address resolution. For the discussion to be specific, ...
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60 views

Is WPA practically less secure than WPA2 only if QoS is enabled?

I've been looking into attacks that are effective against WPA-TKIP but not WPA2-AES (both using PSK). I've found Vanhoef & Piessens's paper that builds off an attack by Beck & Tews and can be ...
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28 views

Using Team Foundation Server for Classified Projects

I work in a secure area on programs in which large portions of the code are federal government classified secret. We use Visual Studio so I would like to be able to use TFS for versioning control ...
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122 views

Tunneling Remote Desktop from DMZ Windows server to my Listening Linux Server. How to?

I have a situation in a penetration test where I got a meterpreter on an internal (DMZ) Windows box, and I want to connect via RDP to it, however the RDP port is blocked externally. The box I hacked ...
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60 views

How can I get a list of unsigned plugins in openvas?

How can I get a list of unsigned plugins in openvas? Are those plugins safe for use? When I run the scan on a test machine with nasl_no_signature_check = no, I don't get any results(not even any ...