Network Security - securing network infrastructure and connections

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28
votes
3answers
11k views

How do you stop a hacker when their IP address is 0.0.0.0?

Wordfence reports the following visitor: An unknown location at IP 0.0.0.0 visited 4 hours 45 mins ago IP: 0.0.0.0 Browser: Baiduspider version 2.0 Mozilla/5.0 (compatible; Baiduspider/2.0; ...
0
votes
2answers
142 views

Way to make “DNS unblockers” safe?

Many people who live outside the US use "DNS unblockers" such as Unblock-Us to access region restricted services such as Netflix and Hulu. My understanding of these services is that for DNS requests ...
0
votes
1answer
63 views

Secure end-to-end when part of conversation must be over HTTP

We have a situation where a user's identity can be verified as follows: the network provider knows the identity of the user and injects secure headers into the HTTP request, which our servers can use ...
1
vote
2answers
93 views

Using HTTPS, can the target domain be seen?

If I go to https://google.com/q=test_query with from my browser, what traffic can be seen on the router? Can the domain name (google.com) be seen? If so, can I block all of the traffic to a web page ...
4
votes
2answers
419 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 ...
2
votes
1answer
223 views

How can the Google web crawler bypass portals?

This is a situation that I have encountered on a number of occasions. I will conduct a web search in Google, a link to a file (.pdf for example) will take you to that file on the server. It opens up ...
0
votes
3answers
101 views

How to set iptables to drop packets that I'm not listening on?

I've got a Kali Linux box I use for pen testing. I would like to configure my machine to DROP incoming packets, but only when I'm not listening on them. e.g. if I run a netcat listener on port 80, I ...
1
vote
1answer
214 views

DNS settings compromised from WAN on Edimax ADSL router

My home network Edimax AR-7084gB ADSL modem/router with firmware verison 2.9.5.0(RUE0.C2A)3.5.18.0 was exploited from WAN few days ago. The attacker changed DNS server settings - primary server to ...
0
votes
1answer
178 views

What's gonna happen when all IPv4 changes to IPv6? [closed]

I was guessing what could happen when all IPv4 be changed to IPv6 , like pen-testing tools and network configuration for common users. Will all the IPv4 be automatically translated to a IPv6 new one ...
1
vote
1answer
108 views

De-auth attack Reason codes and possible reaction

I am learning about Deauth attacks and how they work. I see that the Deauth frame has a reason code which indicates the reason for the deauth. I have tested the attack with aircrack-ng and this reason ...
-2
votes
1answer
170 views

Can a sysadmin spy on a Wifi connection? [duplicate]

Is it possible that someone who is in charge of a network serving many users, can see what site we visited? I mean, we have only one internet connection, and we used WiFi to be connected. Is it ...
5
votes
1answer
206 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 ...
2
votes
1answer
182 views

Can I perform WEP cracking from several laptops against 1 AP

I have successfully being able to perform WEP key cracking attack using aircrack tool. I want to allow my students to test this in a lab environment. They will be working fro their own laptops against ...
5
votes
3answers
198 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
vote
1answer
132 views

Computer worms, propagation and exploiting vulnerabilities

I have been referred here to ask this question, so I am doing a research on computer worms, I have been through several sites and a few caught my attention, I have learnt that worms propagate through ...
0
votes
0answers
68 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 ...
0
votes
1answer
116 views

Software to simulate attacks such man-in-the-middle or DoS [closed]

Sorry for novice question. I am completely new here..... I am already familiar with Asp.net, JavaScript, Java, C++, etc. I know the theories behind attacks and protocols, but I want to see them in ...
2
votes
2answers
91 views

Encrypt and Authenticate localhost-traffic?

I have some app-components on the same machine but in different languages which need to communicate. I am using socket communication over localhost to do so. The data transferred is confidential. ...
0
votes
0answers
18 views

How to secure my network in home environment from infected computers from the inside of the network? [duplicate]

The problem lays in my brother two computers. I have few computers on my own on which on one of them I'm doing business with transactions and stuff like that. However I have one network on which all ...
0
votes
1answer
73 views

Sending GET requests to non-servers?

I ran a couple of wireshark runs for my computer and noticed inbound GET requests. Is it legitimate traffic for there to be GET request traffic inbound to my home computer if my home computer isn't a ...
4
votes
1answer
232 views

Can I isolate a specific computer on my network?

My brother gets malware infections practically every week. Apparently he had a infection over the past 24 hours, I only noticed it because I checked the router logs and saw a massive amount of network ...
2
votes
1answer
132 views

One-Way Data Transfer Cable

Is there a cable that physically only supports data flow in one direction (out)? The idea here is to put this on a system that can only export data so that there is very minimal risk of the ...
0
votes
1answer
93 views

Tablet / phone app security in unsecured networks

Although reluctant to use my laptop on unsecured networks, I at least know that without me launching any processes or logging into certain web pages, that I will not be sending any credentials over ...
0
votes
0answers
40 views

Key Distribution using multicast

I am trying to come up with a solution for a system where i need to generate a key (Kn) from time to time and distribute it to a large number of servers in a private network. Since it has to be a ...
4
votes
2answers
511 views

Securing remotely accessible IP cameras that do not support HTTPS

I have some IP cameras set up on my home network, which is WPA2 protected. These cameras are setup to be accessible from the Internet thru my router's DDNS address, and port number. So for example, ...
1
vote
3answers
93 views

Is it safe to share my hostname

I am using GNU/Linux. Sometimes, I copy/paste code from the terminal (like user@hostname ..) to put it in a forum thread or a blog ..etc And I was always wondering that it is better to hide it . Is ...
1
vote
0answers
102 views

Security risk of connecting one mobile device to another mobile device's hotspot

Is there any risk when connecting an Android Phone to a [Verizon] iPhone's Hotspot? If there are I'd like to know about solutions. The Android Phone will basically be tapping the data plan of the ...
5
votes
1answer
161 views

How to detect malicious code sending information to attacker's server in linux

Suppose you have some malicious code on your linux laptop, for example a rootkit or trojan or something like that. Now restrict your attention to the case that the malicious code does transfer some ...
1
vote
2answers
142 views

How to avoid DDOS against Kerberos Authentication Server

I have a school project where i am supposed to implement a Kerberos based infrastructure (AS, TGS and resource server). It is already done and working, but i started thinking about how to protect the ...
4
votes
1answer
240 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 ...
0
votes
1answer
122 views

Outbound Port 443 Open but Not Allowing SSH [closed]

My college wireless network has a firewall blocking all outbound ports except 443 and 80. The wired network, however, has none of these restrictions. I can connect to HTTPS sites (obviously). On my ...
4
votes
0answers
36 views

How does BGP filtering work to prevent routing hijacking? [duplicate]

I've been reading for a while but yet do not properly understand how is BGP filtering used to prevent "attacks" such the recent Indosat's problem. Do not copy&paste Cisco's site, I have read all ...
-3
votes
1answer
11k views

Hack into a computer through MAC and IP address [closed]

Can I hack into someone's computer if I know the MAC address of his modem and his public IP address? Is this possible? What kind of stuff would I be able to access?
14
votes
3answers
513 views

What security mechanisms are used in BGP and why do they fail?

I just read about Indosat trying to take over the Internet by mistake. I read on a Polish infosec-related website that most of their announced routes failed to propagate, but some of them reach the ...
2
votes
2answers
122 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 ...
1
vote
1answer
50 views

Secure Azure to Data Centre Web Service Calls via Trusted IP?

Background The company I work for have a system with some data. This system's hosted in our private data centre. This system provides some ReST web services. We're looking to create a website, hosted ...
1
vote
3answers
397 views

Can an attacker sniff physical network traffic through WiFi?

So, I am wondering - is it possible for an attacker to sniff traffic on an Ethernet connection if they are not physically plugged into the modem/router hardware but they are connected through wifi? In ...
2
votes
3answers
79 views

Is there any point to connecting to a VPN server while on the local network?

I plan on installing a VPN server on one of my computers that is running Ubuntu for purposes of connecting to my local network while I am not at home. At home I also have a desktop computer (separate ...
2
votes
4answers
549 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 ...
1
vote
2answers
142 views

What security does an ISP provide for its customers?

I've heard that ISPs provide some kind of protection; using NAT and firewalls, to prevent hackers from using tools such as nmap to attack customers from over the Internet. What other technologies are ...
1
vote
0answers
60 views

Local lan drive by download

Basically, I'm testing a local network, on which I'm able to use ARP spoofing. I now want to try and infect one of the Windows boxes on the network with a backdoor. I could inject an iframe into their ...
0
votes
3answers
76 views

Local network proxy/spoof

Are intruders in a local network able to mask their local IP in any way? Could they 'hijack' another local IP and perform scans and exploits from there?
0
votes
2answers
188 views

Could a router protect our network or need we use an hardware firewall?

I am at a small firm (12 PC on the internal network). We use this network architecture now: Internet(Modem) --> Router --> Firewall --> Switch -- > Internal Network (clients PCs) ...
0
votes
0answers
21 views

What are the fields needed to check for SQLI, XSS, XSRF and Remote file inclusion attacks in apache access log file [duplicate]

I need to identify the SQLI, DoS, XSS attacks from log file. At which field these attacks will reflect in log file. Please suggest me some idea and send materials to me.
1
vote
3answers
160 views

Are there any exploits that would allow a user to “spoof” a screen capture system?

We have a security system installed that takes pictures of the client user's screen and sends them to a server. The pictures are saved until they get to the point where they are old enough to be ...
3
votes
3answers
372 views

Watching for applications like WireShark and other eaves dropping on corporate network

Are there ways to monitor and check for network monitoring like WireShark? Or would it just be more ideal to ensure every application uses SSL to ensure no employee or anyone could packet sniff ...
3
votes
3answers
414 views

Finding hidden cameras

Let's say Alice, Bob, and Mallory all live together in a house. Mallory decides to go on vacation, but before leaving, she decides to play a game with Bob and Alice. She makes two claims: She has ...
7
votes
1answer
161 views

Deanonymizing users by introducing structured delays to the network?

Here is a scheme for deanonymizing a user that I've been thinking about, just out of curiosity. I tried searching for it but didn't find much. Does this technique have a name? Are there any papers or ...
0
votes
1answer
263 views

Dual Firewall DMZ

We've just learnt about firewalls and DMZ and I'm struggling to understand how are these actually implemented ? The architecture we've learned was something like this: Let's say that we have a ...
2
votes
1answer
100 views

Does WPA2 Enterprise also authenticate clients to the 802.1X protected switch port?

In an 802.1X protected LAN, the switch port is usually set to "Multiple Hosts" mode and the access point is configured as an 802.1X supplicant which authenticates to the switch and "opens" the port. ...