Network Security - securing network infrastructure and connections

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-1
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2answers
1k views

DrayTek Vigor 2920 HTTPS allowed

In my office we have a DrayTek Vigor 2920 router, with CSM setup to only allow certain keywords (keyword objects) to certain IP groups. This all works fine, however we've discovered that all HTTPS ...
3
votes
2answers
145 views

How can you transmit data without revealing your location?

Anyone can pick up wireless transmissions without revealing their location, but transmitting is much harder. What types of wireless communication systems are there that a device can use to transmit ...
0
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2answers
155 views

Advice - When just starting your career, what are the best certifications to eyeball? [closed]

Im just starting out in school to study Network and Info Security. I know this is the field I want to invest my time and study into. Well over 200k security jobs went unfulfilled last year. My ...
27
votes
4answers
25k 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 ...
0
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2answers
94 views

Is there any reason that captive portal server can't block the ICMP echo request/reply packet

We can get connected to those public WiFi hotspot without the account but can access to no website but the login page. As I tested, all those login website would respond to my ping even I was an ...
8
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4answers
6k views

How to detect hosts running in virtual machines with nmap?

I have to determine if a given subnet has virtual hosts. Are there any ideas about what switches to use?
3
votes
2answers
1k views

How can I get a fiddler-style trace of an iPhone / Android?

I want to audit the HTTP and HTTPS activity of apps downloaded onto my mobile device. What is the best way to do this? I own the device, can add a root certificate, and can connect the running ...
3
votes
1answer
205 views

Secure Connection between two mobile (Android and/or iOS) devices

I've a Device A which will communicate with multiple devices on a network (BLE and/or NFC). All the devices will be handled a Token upon authentication which somehow needs to be transferred over to ...
2
votes
1answer
49 views

Terms for input/output to and from a Firewall

Is there an official/standard term for the stream of data sent into or out of a firewall? Obviously the inbound traffic would be the traffic under surveillance, and the outbound traffic would be the ...
3
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1answer
271 views

Is my server being used as a proxy or being attacked?

I have an Ubuntu, Apache, Passenger, and Rails 4 project on AWS EC2. I am a beginner full stack developer and am unfamiliar with the security and server side of my project. Recently, my site was ...
4
votes
2answers
592 views

How to use a port scanner in a hostile manner

Port scanners like nessus and openvas are basically used to identify the vulnerabilities of the network. My question is if someone with bad intentions is able to use these legal tools in a more ...
2
votes
6answers
42k 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 ...
2
votes
0answers
64 views

How do I allow for anonymous encryption? [closed]

I have a protocol I am designing that requires anonymity and privacy. My idea is to have a minimum number of hops in the network before the message can be sent to its intended destination. The ...
4
votes
1answer
139 views

Accessing user accounts without asking for their password

I don't like asking my (windows network) users for their passwords, it doesn't seem like a good security practice. I also want to train my users to never give their password to anyone if they ask for ...
2
votes
1answer
54 views

Updating privacy/security-concerned applications [closed]

Lets say we have a decentralized open source p2p chat client meant for secure communication. The main attack vector seems to be the (centralized) update mechanism. What methods and/or techniques can ...
7
votes
2answers
457 views

What does a Firewall mean by “connect to TCP port without your permission”?

McAfee is reporting incoming network connections blocked from IPs like 198.252.206.149 (StackExchange Inc.), 54.179.231.116 (Amazon Technologies Inc.), 74.125.68.106 (Google Inc.), etc. The ports ...
1
vote
1answer
42 views

Security issues with multiple interfaces

Say I have a server with multiple interfaces. I wish to configure each interface as different IP addresses (and host name). Is it advisable, on a security standpoint, to do that? I have an application ...
4
votes
1answer
92 views

Security risk: Digitally sign communications for SMB

I have a computer (Windows) on a network where an industrial process is controlled. There is an option in Local Security Policy >> Local Policies >> Security Options >> "Microsoft network client: ...
1
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0answers
79 views

Information Security classification [closed]

I've been interested in IT security for a bit (~1 year) and had a bit of experience with NSM as well as web security. I want to have an overview of the entire industry, with all relevant niches and ...
2
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0answers
85 views

Snort alerts analysis (web interface) [closed]

I have a question about Snort (or maybe any other IDS/IPS, any working solutions would be ok). The goal is to set up some web interface providing a way to view the whole TCP stream packets of each ...
119
votes
8answers
13k views

Are “man in the middle” attacks extremely rare?

In "Some thoughts on the iPhone contact list controversy and app security", cdixon blog Chris Dixon makes a statement about web security Many commentators have suggested that a primary security ...
-2
votes
1answer
88 views

Stuxnet - The background functions [closed]

Stuxnet was a clever worm that aimed to malfunction programmable logic controllers on nuclear networks (Iran was the most affected). Nuclear networks were private networks, not supported on Internet ...
0
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0answers
33 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, ...
1
vote
1answer
149 views

Is using Chromecast “a security nightmare”?

I'd like to use Chromecast on our office network. Doing so requires enabling UPnP (Universal Plug and Play). A quick search turns up statements like this: The US Department of Homeland Security ...
1
vote
0answers
61 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 ...
2
votes
1answer
253 views

TLS 1.3 Makes Security Tools Obsolete?

I am a student and relative noob in IT security performing research for three reasons: school, my employer and personal curiosity, and I hoped maybe someone could answer a question for me. In a video ...
0
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1answer
86 views

How do bits transefer over wire? [closed]

i was tackling with networking and cannot seem to understand How bits are transferred over wires in the first place what counts for each of 0's & 1's
0
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1answer
56 views

Setting up a secure Ad-Hoc network

I am taking my laptop with me on a school bus trip, and I want to use an Ad-Hoc network to host a multiplayer Minecraft server. I have heard, however, that Ad-Hoc networks have a vulnerability that ...
1
vote
1answer
52 views

Belkin wifi netcam cloud storage [closed]

If my net/router turns off with the belkin netcam will i still receive video if the motion sensor is activated? I was considering purchasing one, but if all that needs to be done is simply turning off ...
0
votes
2answers
78 views

Inspecting every packet leaving the system for sensitive information ? [closed]

Is there a way to check every packet leaving the system for sensitive data like IP addresses, personal information (like logins) etc ? A free (and preferably open source) program which does this for ...
-4
votes
1answer
58 views

What is the most secure way to protect a custom CMS from infiltration? [closed]

I have a custom CMS with a randomly generated ASCII 100-character string from this site for both my username/password. I also have this following sha512 encryption system, which was created by ...
1
vote
0answers
47 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 ...
1
vote
3answers
343 views

Installed some software over a public insecure wireless network — should I consider myself compromised?

A couple months earlier, I made the mistake of downloading some software over an insecure wireless network and running it without checking its integrity. I am now considering reinstalling my system, ...
1
vote
1answer
94 views

Secure point to point remote access to NAS drive

This question is very similar but also distinctly different (How do I ensure data encryption on Samba transmission on *NIX systems?) I'm looking to set up remote access to a NAS unit locally sharing ...
4
votes
4answers
46k views

IP address of an iPhone

Recently I logged on to my bank account via the Chase app on my iPhone. I received a message that another device was currently logged on to my account and "would I like to end the session"? Of course, ...
1
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2answers
130 views

Is VPN the best solution against man-in-the-middle attack? [closed]

I'm looking for the best way to protect my enterprise against man in the middle attacks, because a lot of people connect to the same network. So I was thinking of creating a VPN. Is this really the ...
2
votes
1answer
799 views

Understanding OpenWRT LuCI Firewall Routing with VPN

I'm still fairly new to networking, and I'm having a little trouble grasping some concepts of the proper firewall rules I need to implement for my desired setup. I'm setting up a router with OpenWRT ...
1
vote
1answer
464 views

OpenVPN and firewall configuration in LuCI

I'm trying to find the best (most secure) configuration for the firewall in OpenWRT. I'm using LuCi to configure all the stuff. I have successfully created a VPN (OpenVPN). It is supposed the best ...
2
votes
0answers
57 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 ...
11
votes
4answers
3k views

How to prevent network administrators from accessing USB drive

How can I prevent network administrators from accessing, mapping to etc. a USB drive that's in a PC on their network? I'm mainly concerned about files being edited or deleted.
8
votes
3answers
11k views

How can I keep a roommate from seeing my web activity?

I have a roommate who is a network security engineer and I think he hacked our home network and now knows what sites I am visiting and what I am doing online. Although he is not stealing anything I ...
1
vote
2answers
299 views

Persistent Connection Attempts By Akamai Technologies

I have seen this question asked in different places, but have never seen a satisfactory answer: On different computer builds, ASUS/GIGABYTE/MSI, I constantly have outgoing connections to ...
5
votes
3answers
882 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 ...
-4
votes
2answers
49 views

How to hide my surfing history [closed]

I am on work network, installed and am using chrome without admin rights. how can i hide my surfing from netadmin, and if not then how can i link my home pc with work access and surf without any care? ...
0
votes
4answers
220 views

Help understanding VPN

I've been reading about VPNs lately, and I'm struggling to understand what they do and how they're essential components to upholding anonymity online. The basic idea I have is that a VPN allows two ...
1
vote
2answers
107 views

How to secure Epson Beamer?

I work in a school and we have several Epson Beamers but some of our students have download an application for their mobile (with infra-red and WiFi connection) and they now have remote control and ...
-1
votes
2answers
47 views

How can I detect mode interface of other machine is promiscuous [closed]

I have a project that is to protect my box from attack man in the middle arp poison. I should detect if interface mode of other machine is promiscuous. I must write script python or command linux.
9
votes
3answers
698 views

Would publishing a network diagram make the network less secure?

I have found some social networking sites that focus on sharing architecture (network maps and diagrams) and configuration. Does sharing this type of information decrease the security of my network? ...
19
votes
5answers
18k views

Can I detect a MITM attack?

Based on this question here: Are "man in the middle" attacks extremely rare? Is it possible to detect man-in-the-middle attacks, and if so, how would one go about it? In addition, what if ...
0
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0answers
10 views

Impact on Network printers which the SSL certificates are expired? [duplicate]

Any one please help me on what is the impact of network printers which the SSL certificate is expired also need to know whether we can remotely renew the certificate from another location??