Network Security - securing network infrastructure and connections

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3
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1answer
400 views

Filtering network access on a user/group/process basis

I am interested in peoples thoughts on what the best approach would be to controlling access to network interfaces at a user/group/process level for a Linux based host. The scenario I have in mind is ...
2
votes
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 ...
1
vote
1answer
156 views

What does Bluffdale mean for privacy?

I posted a question related to tracing webserver attacks over here and the responses got me google-ing. My understanding has always been that privacy is dead and that essentially there's always ...
1
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1answer
336 views

DNS query through squid? [closed]

My IDS picked up our squid proxy server doing a dynamic DNS request. I wasn't aware squid passed DNS requests from the client to the internal DNS server. Is this possible? Snort Alert: ET POLICY ...
29
votes
1answer
2k views

What's the risk if I accidently type my password into a username field (Windows logon)?

I'm used to logging into my personal Mac which is a password-only field (like waking from sleep mode). Sometimes I have to use a Windows network on which I have an account, but of course I have to ...
7
votes
3answers
764 views

Why don't wifi managers remember mac addresses for hotspots to defeat the jasager attack?

So I just learned about the jasager attack, via the wifi pineapple and it struck me immediately that it wouldn't work at all if network managers (privately) associated MAC addresses with hotspots and ...
2
votes
3answers
19k 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 ...
4
votes
1answer
130 views

Sulley - only using ASCII printable characters

I have a problem fuzzing FTP protocol. An example of a command fuzzed is the following data model, which should fuzz the "CWD [string]" command of the FTP protocol. s_initialize('CWD') ...
4
votes
3answers
186 views

How (if at all) can an attacker manipulate an already established SSL/TLS Connection?

First off, this is a purely academic question. My first answer would be that he cannot since he does not have the session key. Could he at least kill the connection, such as by sending spoofed FIN ...
2
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2answers
190 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 ...
2
votes
1answer
117 views

ISP security compared to enterprise

I've just started reading IT Security, and found some interesting reads on man-in-the-middle and different types of "attacks" that could be used by an enterprise to intercept communications on their ...
0
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2answers
161 views

Can I connect our network to the internet but only allow connections to certain servers?

At work we have a network that is not connected to the internet however it is exposed to the outside work through USB drives and employees cell phones. I'd like to connect our system to the internet ...
4
votes
2answers
253 views

Can a MitM attack occur on an ISP's local exchange or street wiring cabinet?

If an attacker were to dig up the 'outgoing feed' from my local exchange or the street cabinet, could they sniff my entire neighborhood's network traffic? Or is this infrastructure secured against ...
1
vote
1answer
173 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 ...
2
votes
4answers
6k views

How Team Viewer establish Remote Desktop Connection

I am wondering how is it possible for Team Viewer to establish the remote desktop connection over the internet even if the user has not enabled the 3389 port ? I am searching over the internet but ...
1
vote
3answers
567 views

Wireless LAN router fingerprinting

Does anyone know of a database that lists the range of MAC addresses that are assigned to each particular brand of router? I would like to use this information for fingerprinting. I know I can find ...
0
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3answers
112 views

Network Concerns Over a MITM Attack

If my website is hosted on a network of hundreds, possibly thousands, of computers wouldn't an attacker have to gain control of just one of them in order to conduct a MITM attack on my website ...
4
votes
5answers
4k views

Preferred UAC configuration in Enterprises that use Login scripts to map drives

In Windows 7, Vista and newer OS's, UAC will prevent logon scripts from mapping hard drives so that the following logon script code won't work: Dim WshNetwork Set WshNetwork = ...
1
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3answers
202 views

will all instrusion dectection will become host-based? [closed]

Will all intrusion detection become host-based once all network packets have been encrypted?
0
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2answers
596 views

Certified Ethical Hacking courses [closed]

I want to take a CEH exam, I'd like to know what tutorials and books are recomended for this kind of study. I also would like to know if there are certifications that are better-recognized, so that I ...
3
votes
2answers
872 views

How to use attack trees and attack graphs

I am trying to understand how attack trees\graphs can be used in the security process. I read a lot of papers presenting the topic and how this reppresentation can be useful, but I really don't ...
2
votes
1answer
451 views

Is SSL session based only? Is there a (formal) definition of an SSL connection?

In various docs on SSL there is a mention of connection. But from the context I am not sure if this means the underlying TCP connection or the SSL connection. I am thinking that there is no SSL ...
1
vote
2answers
162 views

Metasploit Development Reference

The Metasploit team provides some documentation on how to develop exploits, but other than looking through the sourcecode (which is annoying considering how much time I spend going from this file to ...
0
votes
1answer
94 views

NetRange and Router Sharing for Pentesting

When pentesting a network, call it ExampleNet, the network range sometimes exceeds 256 hosts, such as the range x.y.56.0-x.y.63.255. Does this mean that a compromised host on x.y.56.z could be used to ...
2
votes
2answers
3k views

Using Cain and Abel to capture traffic of machine in the same network

I have installed Cain and Able in machine A, which is connected to another machine B via a LAN. Now I want to analyze all the traffic of machine B. Is this possible by installing Cain and Abel on ...
1
vote
1answer
394 views

How to use sslstrip with Internet Connection Sharing?

I'm trying to make sslstrip work with Internet Connection Sharing.ve shared internet connection to router and another pc connected to that router, all are Linux, so Internet <-> pc1 <-> ...
5
votes
4answers
6k views

Secure use of psexec or better alternative to it

I want to remotely start VMWare virtual machines (I own VMWare Workstation) and to this end I need to execute on host something like "vmrun -T ws H:\VMWare\VM1\VM1.vmx nogui" with user desktop ...
0
votes
1answer
309 views

NMAP Commands Used in Option -A

I've found that using the command nmap -A gives me the most reliable results and according to the reference guide the option -A includes service detection, traceroute, and OS detection. I want to do ...
8
votes
2answers
1k views

ports blocked by firewall and not the server

I was asked this question at an interview and i wasn't sure about the answer. The question was "suppose you were checking the open ports on a particular webserver which was behind a firewall, how ...
0
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2answers
115 views

Protecting LAN from remote controlled VMs

I am making a virtual network setup for my high school cybersecurity team to practice. I am connecting all the VMs together through a VPN and then people who are practicing will VPN in and ssh/remote ...
1
vote
3answers
1k views

How to set password on applications in Mac OS to prevent an administrator to start them?

Is there any program that can set password on the app like mail or browser? I know about parent control, but I doesn't work with administrator account. What I want is some program that blocks some ...
3
votes
3answers
799 views

How can I make it more difficult for a user to create multiple accounts?

I would like to know the best way to increase security on a website so that the a single user can't create multiple accounts. What all of a user can be traced? I'm thinking: IP address Mac address ...
4
votes
2answers
1k views

Fuzzing with SPIKE - the \r\n not being taken into account

I would like to fuzz FTP protocol, and currently I have the following: s_read_packet(); s_string("USER test\r\n"); s_read_packet(); s_string("PASS test\r\n"); s_read_packet(); I've also tried ...
2
votes
2answers
769 views

Is traffic sent by Mouse Without Borders encrypted?

Some of our users have installed Mouse Without Borders and I wanted to know if it is possible to intercept the traffic being sent between the two computers and read it in some meaningful manner. I was ...
0
votes
1answer
3k views

In Metasploit, how to use a custom exe as payload?

Question was once on a mailing list but wasn't answered. I want to use a custom exe as a payload in metasploit. For example when I use exploit/multi/browser/java_atomicreferencearray and want to ...
4
votes
3answers
9k views

What do the UDP entries in my netstat output stand for?

I ran netstat -a under windows. what is the meaning of this line UDP [::]:57427 *:* ? Proto Local Address Foreign Address State UDP [::]:5355 *:* UDP ...
3
votes
2answers
403 views

1 PIX firewall, 2 routers, 2 switches. Please answer a couple questions about hack lab

I bought a bunch of cisco equipment for a project and I got 1 PIX firewall 2 switches and 2 routers This is my plan for a topology but I am new at this so I need help. I am basing this off the ...
16
votes
12answers
21k views

Public DMZ network architecture

Years ago, when I was a student, a network security professor taught me in a class what a DMZ is. The architecture he used in his slides was similar to this one: Now that I got employed, my boss, a ...
2
votes
1answer
110 views

Network abnormally slow during night hours

My network recently the last week as become abnormally slow around 11 pm. Very slow buffering youtube videos during all hours. Ive recently purchased the new router about two months ago but not ...
2
votes
1answer
200 views

network improvements over ipsec

I have a specific environment in which TCP is not optimal due to its general assumptions, and thus needs to be improved. This small improvement has been done successfully. It operates at various ...
4
votes
6answers
7k views

monitoring outgoing network traffic

The graphs for one server that I am using are showing consistent 7.5 kb/s outgoing network traffic that started a few days ago. How can I monitor/log/capture/analize this traffic to see what is it, ...
2
votes
2answers
223 views

Project help required by a newbie!

Basically, I'm doing a degree in network computing and am currently working on my dissertation right now. I am not an expert with networking yet, so I'm kind of struggling to get started with my topic ...
2
votes
2answers
634 views

Reveal the True IP of a User

Is there any best practice method (and preferably documented) way of revealing the True IP of a user using a HTTP(S) connection? I.e.: To be able to uncover the true IP from transparent as well as ...
4
votes
1answer
3k views

VirtualBox Pen Test Lab Setup

So i'm trying to set up a pen test lab in virtual box on my windows 7 host. I have 3 guest OS's installed: 1.) BackTrack5 2.) Centos 5 Server/Snort (My Snortbox) 3.) Win XP (Unpatched) I have 3 ...
2
votes
1answer
351 views

How can wireless router password encrypts data using WEP and WPA

How does the password that we enter (to connect to a wireless network) encrypt the data on the wireless network? Through my reading I am not sure if the password that we enter is the same as the ...
1
vote
1answer
290 views

Does signing my e-mail with DKIM imply non-repudiation for all my users?

Since a few weeks I have set up my google apps domain to use DKIM for all outgoing mail. Does this mean that everyone that is in possession of a copy of the message can verify that it really ...
2
votes
1answer
282 views

Stateful Signatures in an IPS

I am researching IPS devices and their signatures both stateful and stateless. The test network I am looking to implement the IPS in has asymmetric traffic so stateful inspection would be nearly ...
0
votes
1answer
106 views

Is there a Snort rule that equates to “something suspicious flagged from a client side application?”

The reasoning is what if an enterprise monitors snort alerts more-so than say syslog. Is there a specific pre-defined alert for 'client side app says something fishy is going on'?
0
votes
1answer
5k views

If a router has port 5060 open, and I know that there is unencrypted SIP traffic going through this port, how could one take advantage of this

Ok so an Nmap scan against an IP address shows that port 5060 is open. I know that 5060 indicates that this is SIP traffic. Also, 5060 indiciates that this is unencrypted traffic, where if the port ...
0
votes
2answers
274 views

Unexplained downloading

I was just watching as my bandwidth monitor spiked downloading a file. I checked my current netstat and I didn't recognize one of the IPs so I started capturing the data with Wireshark. The ...