Network Security - securing network infrastructure and connections

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1answer
47 views

How the firewall is allowing Facebook requests to bypass itself?

I've a McAfee Firewall configured at my workplace. It actively blocks all the requests for websites like https://www.Flipkart.com https://www.Amazon.com https://www.Facebook.com I's playing ...
2
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1answer
38 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 ...
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0answers
17 views

Setting up a new DMZ for Web Servers [migrated]

When it comes to security, VLAN ACL's, firewall DMZ policy and the like I am a Newb. So any help will be appreciated. We are trying to architect our network to place all of our web accessible ...
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1answer
241 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 ...
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1answer
85 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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2answers
536 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 ...
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6answers
38k 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 ...
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0answers
53 views

How do I allow for anonymous encryption? [on hold]

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 ...
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0answers
40 views

A local IP address (RFC 1918) on my network that is not … local .. [migrated]

I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router) The puzzling thing is that i tried traceroute ...
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1answer
99 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 ...
4
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1answer
110 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
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1answer
53 views

Updating privacy/security-concerned applications [on hold]

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 ...
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2answers
397 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 ...
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0answers
44 views

Information Security on a network [on hold]

You are an IT Security administrator in a banking organization. Your organization hired an outside IT firm to do a proof of Concept for new equipment which is a computer based system. This equipment ...
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0answers
57 views

What's the best way to connect to a computer via IP address? [closed]

I'd like to know a valid,working method which allows me to connect to any computers if I know their IP address.
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1answer
30 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 ...
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0answers
40 views

Most secure router to buy for my home? [closed]

I want to buy a new router for my home, because mine is given by my ISP and i'm sure it's a security shame. What I need is a router that possibly can run a custom or, lets say, open firmware, so I get ...
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1answer
46 views

Socket timeouts and DDOS [closed]

I have a question about socket timeouts in TCP. If by doing a certain request to a server a client's socket is timed-out, can there be a security vulnerability ? Is a timeout synonymous to the ...
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1answer
56 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: ...
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0answers
68 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 ...
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0answers
34 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 ...
114
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8answers
12k 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 ...
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0answers
24 views

How to check SSL connectivity between certificates installed on two different server [migrated]

Suppose there are two organizations which share information with each other. Every organization installs SSL certificate in their application server and provides the same certificate to other ...
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1answer
58 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 ...
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1answer
48 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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0answers
11 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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1answer
134 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
107 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 ...
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0answers
15 views

How to assign my machine static IP of a different VLAN [migrated]

Imagine a user is on VLAN1 that dynamically gets an IP, and there is a VLAN2 that the users on VLAN1 cannot access. Is there a way to assign the machine of user on VLAN1 an static IP in the range of ...
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0answers
42 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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1answer
152 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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0answers
19 views

Storing LVM encryption key on network share [migrated]

I want to encrypt all my LVM LV's and have them automatically unlocked on boot using a keyfile available on my network. I can make the files available by SMB, NFS, HTTPS, etc. I have Ubuntu Server ...
2
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1answer
130 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 ...
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1answer
72 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
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1answer
43 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 ...
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1answer
35 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 ...
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2answers
72 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 ...
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1answer
29 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 ...
2
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1answer
52 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 ...
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0answers
24 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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3answers
339 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, ...
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1answer
91 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 ...
1
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1answer
43 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 ...
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4answers
38k 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, ...
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2answers
112 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
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1answer
138 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
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1answer
368 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
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1answer
309 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
70 views

Does VPN remote port forwarding compromise the anonymity of the VPN user?

An anonymous VPN service will typically assign the same public IP address to many VPN users. This procedure ensures that a connection cannot be traced back to the VPN subscriber: behind the veil of ...
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0answers
38 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 ...