Network Security - securing network infrastructure and connections

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0
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2answers
113 views

Blocking access to social media on Windows

I would like to block websites like Facebook, YouTube and other social sites as part of my job and would need your advice on how to manage that. There are about 120 PCs in the building. Is something ...
7
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2answers
1k views

IIS IP Address Restriction - can I rely on it online?

I've been told that I might have more luck posting here than on Stack Exchange, so here goes: I'm looking for a way to lock down a 3rd party application in IIS. It's a web service, so there's no ...
3
votes
2answers
477 views

How can you (anybody) find out the IP address of a single computer inside college

How can you find out the IP address of a single computer inside a college network. Every computer has the same public IP address on the network. How is it possible, after discovering that the IP is ...
4
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1answer
141 views

What is the risk that Windows 8's loopback protection feature protects me from?

Windows 8 requires Fiddler to set up an exemption when sending traffic to localhost. Since this is a default setting (and affects many computers): What security benefit does this provide How can I ...
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1answer
9k views

How much can someone see from my iPhone by connecting to my wifi

How much can someone see from my iPhone by connecting to my wifi and can they copy my messages files documents etc
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1answer
341 views

internal proxy server vs DMZ proxy server

What would be reason for placing a proxy server in a Demilitarized Zone (DMZ)? I understand that a DMZ is a separate network to your internal network (lies inbetween internal network and firewall). I ...
2
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4answers
661 views

Are custom protocols insecure?

So, I know rolling your own security is ill-advised, but for simplistic things like communicating with a home server, say, updating a grocery list, is a custom protocol fine? It won't be doing ...
2
votes
1answer
243 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 ...
0
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1answer
66 views

Identifying attacks by network activity

Is it posible (and how) to tell from a network dump if there is a buffer overflow attack, DoS or brute force attack? A DDoS would be more obvious to identify, but those attacks mentioned above I think ...
2
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2answers
193 views

What prevents this session hijacking from occurring? (SMB/CIFS example)

SMB/CIFS (file sharing, Windows environment) I understand when a client connects to a server there is a challenge/response system in place. However, once the client is connected that "connection" is ...
0
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1answer
61 views

Analyzing UPnP entries from home router

I'm using a tplink router for my home LAN and just noticed that in the UPnP section in its control panel there are two entries with App description: Teredo of tipe: UDP and ports: 55566 and 49868 How ...
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2answers
121 views

Is scraping this website legal? [closed]

I'm thinking of developing a third-party client for Quora in Windows Phone. There are a few but they just run Quora in a mobile browser. The problem is there is no public or open APIs of Quora. And ...
0
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1answer
44 views

Throttle network based on OS [closed]

What do I need to learn/know to throttle a clients network based on his/her operating system. For example: Someone in my network using Kali Linux... I would like to throttle their traffic to ...
1
vote
1answer
87 views

how to trace or get evidence you've been hacked [closed]

my devices and my network have been compromised. I foolishly left my router unprotected and they were able to gain access to all my apple devices and then install some sort of software that will take ...
0
votes
2answers
352 views

What kind of attacks can happen on port 80

I am a novice to network security domain. For one of our clients, we are trying propose a network model where an Apache proxy/web-server which will be the only one that is exposed into the ...
1
vote
0answers
59 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 ...
1
vote
1answer
61 views

Can we build network topology using passive fingerprinting?

Can we use the tools such as P0f, OSSIM and other passive fingerprinting tools to build a comprehensive network topology of how the devices are interconnected ? or is there a passive finger printing ...
7
votes
2answers
417 views

LTE networks and MITM

2G would leave you vulnerable to spoofed base stations. 3G tried to somewhat fix that using mutual authentication. Now, I tried to check how LTE handles this but I couldn’t find any usefull ...
60
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5answers
57k views

What is the difference between SSL vs SSH? Which is more secure?

What is the difference between SSH and SSL? Which one is more secure, if you can compare them together? Which has more potential vulnerabilities?
2
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1answer
8k views

How does pfsense block torrent traffic?

I know that pfsense is a very effective tool for restricting bit torrent traffic. I was wondering how it actually manages to do that ? There's not much information available on this. The more ...
30
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6answers
4k views

Can malware be dangerous even when quarantined?

I am reading a book on network security and when talking about user confusion it writes: "It is not uncommon for a user to be asked security questions such as Is it safe to quarantine this ...
2
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1answer
145 views

How to further analyze suspicious traffic

I've been monitoring my network traffic with Little Snitch, and today, when launching Chrome, just the default Chrome tab (shows most frequent sites), it alerted me Chrome was trying to connect over ...
5
votes
4answers
2k views

Ways to monitor someone's internet traffic

If some authority for whatever reason decides they want to monitor your traffic on a wired DSL connection, how would they do it besides exploiting your OS? What are the other ways assuming the OS is ...
16
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3answers
17k views

Should SSL be terminated at a load balancer?

When hosting a cluster of web application servers it’s common to have a reverse proxy (HAProxy, Nginx, F5, etc.) in between the cluster and the public internet to load balance traffic among app ...
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2answers
147 views

Will an IP packet to the own IP address ever leave the computer? [duplicate]

I am working on a system that consists of several applicaitons communicating with each other. Some of these applications will run on the same server and some will run on a different one. So there is ...
1
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1answer
77 views

What Does Putting Each Subscriber of ISP in One Subnet of His Own Mean?

I've noticed that I used to be assigned an external IPv4 from my ISP and a 24 bit mask (255.255.255.0), then it changed to 255.255.255.255, today I was studying IPv4 subnetting and I understand that ...
1
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4answers
219 views

Are computers on same network as honeypot safe?

If a computer is setup as a honeypot and is on the same LAN with other computers, could other computers be attacked? My thought is that if an attacker infects a honeypot with a worm, this worm would ...
5
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2answers
406 views

Is it possible to ping a LAN card through its MAC address? [duplicate]

As you can start a PC through its 'WAKE ON LAN' feature on private networks, can you trace someone's online status through their MAC address over the internet ?
1
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1answer
118 views

IT support and security concerns regarding local VM's

I started working at a large financial institution several weeks ago as a software engineer and despite every other aspect of this job being great, I am haunted by the constant restrictions that ...
0
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2answers
280 views

need network level security alternatives to a VPN

We have a set of servers hosted at a tier-1 provider, and they are currently behind a VPN running on a gateway machine and not accessible to the open internet. Due to VPN instability issues we've ...
2
votes
3answers
240 views

How does Network Discovery OFF protect my computer?

Yes, it seems that the computer will not respond to pinging. But any computer with a packet sniffer will be able to see my ip once I send any packet to the router. So basically, if I'm surfing the ...
2
votes
1answer
176 views

How can I trace a user on my network?

I want to trace a user based on IP Address (or MAC Address) on a Network with about 10 L2 or L3 Switches. Is it possible to know that on exactly which switch and on which port a user with a specific ...
22
votes
3answers
8k views

What benefits does Nessus have over OpenVAS?

Nessus and OpenVAS appear to have fairly similar features. Why would you choose one over the other, besides the benefit of commercial support (which isn't available for Nessus Home Feed users ...
1
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1answer
154 views

How do you stop a hacker with no IP and a dot for their HOST

The entry below is from the visitors log in c-panel Host: . /specific legimate-wordpress-post/ Http Code: 503 Date: Jul 24 09:28:06 Http Version: HTTP/1.1 Size in Bytes: 1118 Referer: ...
4
votes
2answers
638 views

3G Femtocell at home: can anybody connect, and is all traffic encrypted?

At our office we have bad reception for 3G. We bought a Femtocell device that provides a 3G connection for one specific mobile provider. This device is connected to our network via ethernet. I cannot ...
0
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1answer
141 views

what type of attack does LOIC do? [closed]

I have used LOIC (Low Orbit Ion Cannon) earlier . Today i was reading on wikipedia that there are many types of dos attacks , namely SYN attacks , HTTP flooding ,UDP flooding ,etc and two questions ...
5
votes
3answers
260 views

Is it a bad idea to share the ssh host key in a diskless environment?

I am looking at this cluster of student work stations. They are diskless clients which boot from NFS. They also have sshd enabled. All of these machines share the same ssh host key (rsa,dsa,etc), ...
1
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1answer
128 views

How common are mitm attacks behind an ISP?

Yes. Of course using https everywhere is best. But sometimes that's not an option. In those cases, I'd like to make an informed decision. Is there any information about their prevalence? Or would that ...
2
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2answers
114 views

Get the browser history without using a browser

I would like to get the browsing history of a computer in my network (without running that web browser), is it possible?
5
votes
3answers
4k views

Resolving an IP address of a Remote machine to its MAC address

I wanted to know whether its possible to get the MAC address of remote node (computer/Access Point) if I know its IP address. I have heard that if someone sends you an email (even through gmail), you ...
0
votes
1answer
79 views

Pivoting without meterpreter [closed]

Is there any way other than Meterpreter to pivot into the network? If yes, then please guide. I already know about Meterpreter, just want to know manual methods other than this.
0
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1answer
131 views

Router level filtering on home network [closed]

I want to block some part of a website or some videos from dailymotion or other site video sites. Type of network I have 7-8 devices(PCs, Mobiles, iPhones & tablets) all connected to a router ...
4
votes
1answer
254 views

HeartBleed and Closed Source Hardware like Cisco

With the release of heartbleed how does one protect themselves with closed source networking hardware like cisco? Especially hardware with VPN variety. Would it be best to replaced such systems with ...
-2
votes
1answer
762 views

good books for learning network and web security? [closed]

I am reading "Hacking The Art of Exploitation" book . i have read till chapter 2 programming but most of it has gone above my head . I want to learn basically cryptography , network security and web ...
3
votes
1answer
6k 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 ...
7
votes
2answers
238 views

How serious is a local virus in terms of network security

My colleague got a notification on his machine of a possible virus (through the virus scanner that is installed by default on all machines). He called up the tech department, and they simply told him ...
1
vote
1answer
72 views

What is the point of hosting database externally?

Following the breach of avast:forum.avast.com they decided to host the database externally@id.avast.com. My question is, what is the point of hosting the database externally since when you get remote ...
0
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2answers
311 views

What service could penetrate my Firewall via UDP on Port 17275?

Has anyone monitored various requests from all over the world on Port 17275 via UDP? My firewall logs show huge amounts of such requests from lots of different IP Adresses. I can't find any ...
2
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2answers
135 views

How to build a secure affiliate network

I'm going to build a demo affiliate network, which needs to be secured. Let say I have a web application called Affiliate Network Manager that manages all affiliates associated with my online book ...
0
votes
1answer
253 views

Should remote access (RDP/SSH) only be allowed for VPN clients? Or should RDP and SSH be opened the public?

I am about to push hard against the powers that be and strongly recommend that we shift our many (20+) consultants from direct public access to RDP & SSH to VPN clients (connecting to a ...