Network Security - securing network infrastructure and connections

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3
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0answers
104 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 ...
1
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1answer
125 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 ...
0
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1answer
529 views

JUNIPER Junos Pulse - how to apply policy to device

We'd like to set up and use Juniper Junos Pulse on iphone and ipad for access to Corporate mail. We have juniper SA and have prepared the policy, but how do we apply the policy to the devices?
1
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1answer
80 views

What was the purpose of this attack if one took place?

Background Windows 7 Home Edition HP desktop (no av/no firewall/ remote assistance enabled) two external drives attached/no documents on internal drive connected to fios wifi (wep ...
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2answers
97 views

Router or Switch can defend against ARP spoofing attack?

I'm learning about ARP spoofing attacks. Can a router or switch defend against ARP attacks?
2
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2answers
91 views

Locate server by latency it has to other servers

I just thought about how one can locate a server he has administrative privileges on. My "best" idea till now is to ping a huge amount of servers and then measure the latency of the host to these ...
2
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0answers
76 views

Linux machine continuously transferring data over the network to random servers in china and across the globe [duplicate]

I have been using Linux for about 5 years now but I am not very skilled with the commands to monitor and figure out internal issues. I recently was having trouble with the Internet. My roommates were ...
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4answers
195 views

How can I use netcat like ping?

How can we use the netcat (nc) to determine whether a particular machine is running web, mail or SSH services?
3
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3answers
101 views

Detect trojan/keylogger/virus on a businees network

On a business computer network with around 50 computers, there is a computer infected. We need to find that and remove it. I have been running the software below in the suspicious computers, but ...
1
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1answer
95 views

Must an attacker using a Smurf attack be on the same network as the victim?

I'm learning about Smurf Attacks. Since they need to use a broadcast address, doesn't that mean they can't work over the internet? For example if an attacker sends a router the packet with the ...
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0answers
39 views

What kinds of features are useful for network security visualization? [closed]

I just want to know is network security visualization are practical for enterprise network administrators? (Which I am not) And if it is what kind of tools they uses and what kind of features they are ...
16
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2answers
1k views

In what scenarios is relying on source IP address as a security control acceptable/unacceptable?

A number of questions on this site mention relying on source IP address as a control and in most of them it is dismissed as being unreliable. In what circumstances might using source IP address as a ...
7
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2answers
2k views

Initial steps of network mapping

In light of recent security breaches hitting the news, it's been all hands on deck at my work as far as security. I'm trying to pen test our network. I have a very basic question. My Question You ...
7
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2answers
311 views

How to secure a modem/ wifi router without login?

A friend of mine has a DSL-modem/wifi-router from his ISP. The configuration page of the modem requires no login and no login can be set. It is said that there also exists a superuser but this is only ...
6
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2answers
351 views

Can network admin detect port scan on a certain host?

Say, my laptop is connected to a large WiFi network with many other users. If a port scan is run on my IP by somebody else on the same WiFi network, is it possible for the network admin (or anybody) ...
5
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0answers
196 views

Ethical Hacking Certification (CEH v9) From A Web Developer's Perspective [closed]

I just finished a week of training for the CEH v9 certification. I have two questions: What are some strategies I can take for studying for the CEH v9 certification coming at the test as a web ...
1
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1answer
27 views

How do these techniques work for protecting against SYN flood?

I'm reading about how SYN flood can be prevented. Wikipedia has Filtering Increasing Backlog Reducing SYN-RECEIVED Timer Recycling the Oldest Half-Open TCP SYN Cache SYN cookies Hybrid Approaches ...
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1answer
60 views

Shared Global Blacklist Trust Issue

Some vendors like Palo Alto Networks make appliances that will sync blacklists across all of their client base when one of their clients gets attacked. So after the first guy gets attacked, all of the ...
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2answers
497 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 ...
4
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2answers
88 views

Network UTM firewalls, are they really worth it?

I am currently looking at boosting the network security in my organization. (Currently we just use really basic small business network firewalls we primarily bought for IPSec VPNs). However, from ...
3
votes
3answers
176 views

Can one Bypass a Web Proxy by using the Host File?

a website aaa.com has a Static Public IP address x.x.x.x . Client B resides in a network and it accesses the internet through a web proxy C. How the web requests are routed from B to the proxy is ...
42
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3answers
4k views

Is it common practice for companies to MITM HTTPS traffic?

My company has just introduced a new VPN policy whereby once connected all traffic is routed the company network. This is to allow for improved monitoring of data theft. It would appear that this ...
0
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2answers
165 views

Spoofing TCP/IP stack OS Fingerprinting attacks in OSX

We need to change our OSX fingerprint in order to impersonate the Android OS against "passive OS fingerprinting" attacks. For Windows machines there are tools/guides for doing that, but can't find ...
3
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4answers
2k views

When does one require netbios?

I've heard others talk of disabling netbios, but over the years I have never understood exactly when this protocol is required. The wikipedia page explains very abstractly what it is, but not which ...
3
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1answer
207 views

Automating NIKTO scanner

I am working on NIKTO automation. I have a text file contains list of IP addresses along with their ports open. I have already made nikto script. Script functionality - it takes IP addresses and then ...
0
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3answers
151 views

What information can my network admin see when I visit a website? [duplicate]

This question is similar to this but for my network admin. For example, when I enter this URL: https://www.google.com/search?q=example or ... I can see the word example that I was searching on ...
2
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1answer
206 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. ...
4
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2answers
410 views

Possible to detect an/or shut off CryptoLocker by limiting total network bytes transferred?

Since a virus infected PC has to download (encrypt) reupload the entire file (to a file server), and repeat the process for every network drive, is is possible to detect this unusually high bandwidth ...
3
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1answer
54 views

How to make Snort not log sensitive data from the sniffed traffic?

I have Snort in my network which I use for IDS and it is residing on a VM that receives all mirrored traffic from the switch. I am having a web applications that users use and they login, operate on ...
4
votes
2answers
116 views

Can single-purpose PCs be useful as a security measure in this situation?

In the context of a small scale operation, we are considering use of single special purpose PCs allocated to single security-sensitive tasks - for example, certain financial operations. The intended ...
2
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2answers
119 views

4 Hackers on my network! [closed]

Called microsoft hotline because my ASUS laptop got an unknown virus. It would not allow me to access network until i call. The agent i talked to assisted me through the phone. He was able to control ...
0
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1answer
42 views

Network security question (NLB and 2-way TLS) [duplicate]

I have a situation that can be better illustrated in the network diagram below. My scenario: Client Web Server (external party) is using TLS 1.2. In my network, My Web Server is fronted by a NLB ...
5
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3answers
677 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 ...
27
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2answers
99k views

What is the real function and use of a DMZ on a network?

I read the article on Wikipedia describing what a DMZ (demilitarized zone) is on a network, but am still failing to grasp both how it is set up (ie: is it within the main network or sequestered away?) ...
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2answers
146 views

Can bad guys record phone conversations without the carrier's knowledge?

I know that, in most of the world, phone conversations are transmitted as digital data (whether frames in circuit switched protocols or packets). I know that several companies offer products which ...
1
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1answer
41 views

Between point to point connectivity and remote network access, which is riskier?

Between point to point connectivity and remote network access, which is riskier? If I have a third party accessing my company's network, which are the different modes through which they can access and ...
2
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0answers
50 views

Determining time it would take to exhaust IVs on 802.11b/g/n

I'm trying to learn about WEP attacks at the moment. I know that attacks against WEP require collisions of the initialization vectors. Is there a way to determine how long it would take for the ...
4
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3answers
1k 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 ...
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2answers
94 views

How to limit source port for accessing blocked website?

My country has a firewall which blocks sites like Facebook, whatsApp etc. However, they use some kind of port blocking, so some important websites for me like Chegg is also getting blocked I think due ...
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0answers
330 views

BRCM-LVG in home network

Shortly after the local cable provider upgraded our cable modem an item named BRCM-LVG appeared in the list of devices (two computers) connected to our Windows 7 homegroup. It contains a folder named ...
25
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10answers
5k views

Can IP address be a component of 2-factor authentication?

I have a bunch of Linux machines that I wish to administer over the Internet. I currently use SSH keys, but have been advised to use 2-factor authentication. SSH Keys are something you know. Is an IP ...
0
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0answers
39 views

Secured router bridged with a less secure router

I have a router provided by my ISP physically connected to the internet access point. It has basic security (WPA2-PSK) and broadcasts its SSID. I have a second router bridged wirelessly to the first ...
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0answers
43 views

Is EasyIDS obsolete?

I have found EasyIDS from Skynet Development recently but noticed that the latest change-log is from 2009. Does this mean it is obsolete and should not be used as it is not being kept up-to date?
3
votes
4answers
176 views

How Likely Is It For A Virus To Spread From A Linux VM To The Windows Host

I'm currently running Windows 10, and I plan to use a Linux distro to run in a VM (Virtual Box). I know Linux is one of the most secure operating systems there is and I'm curious as to how likely it ...
0
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3answers
38 views

enforce some peers to use IPsec and allow others to bypass it when reaching the same server

Lets assume I have a server that owns UDP socket. And then, for some clients, this server would expect to receive this UDP traffic encapsulated over IPsec. While for some others clients (the default), ...
-5
votes
2answers
141 views

If someone hacks my wifi connection what if any control do they have over radio waves in my house? [closed]

A couple questions on wifi security. If someone knows my wifi password (be it WEP or WPA) what kind of control do they have over radio waves? Can they emit radio waves from computers on my network? ...
0
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1answer
436 views

On the ability to reverse engineer the Instagram Private API

I came across these blog posts where a man was able to extract the Instagram private signature key from the Android app: http://mokhdzanifaeq.github.io/extracting-instagram-signature-key/ Which could ...
39
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4answers
6k views

Can a neighbour who installed my router access it?

I have a bit of a security concern. I'm concerned that my neighbor sees everything on my computer, web sites I have visited, my passwords, etc. Background: He installed a Linksys router in my house ...
15
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1answer
1k views

Do any DNS registrars support multi factor authentication?

I am looking for a DNS registrar that supports strong multi-factor authentication. Does any DNS registrar support multi-factor? Is this a legitimate need?
2
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2answers
142 views

Why is it dangerous for a company to allow employees to connect their own devices to the internet?

I've heard complaints about allowing employees, clients, etc. to bring their own device and connect it to the network. What exactly is the complaint and how can it be a threat? If no network resources ...