Network Security - securing network infrastructure and connections

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Scapy problem in sending packet

I am trying to use Scapy for testing the network. Whenever I send a packet with commands like send, sr ,sr1 I get this message: python.exe has stopped working I am using Scapy 2.2.0 on Windows ...
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0answers
11 views

stopping router attack script using foreign addresses [duplicate]

I'm not a security expert but I've got someone using a script to attack my router. Sometimes it's every 10 minutes, but since I called the person out, it has increased in frequency. They are blocking ...
2
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1answer
85 views

Is this a reasonable approach of continous network monitoring?

I'm currently implementing some mechanisms to continuously monitor our network. Most of this is done through OSSIM but I also extended it by some self written monitoring scripts. Im currently doing ...
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1answer
49 views

Would changing my DNS get through i-Boss?

I'm not exactly sure how the web filter iBoss works but it doesn't seem to be installed on all the computers at my school so I was thinking it probably handles connections directly at the DNS level ...
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1answer
142 views

Is it safe to be showing my WAN and LAN IPs in my email headers?

I don't know how to hide my LAN IP from my email recipients. My LAN IP shows up next to my WAN IP in my outgoing email headers (sent to my other accounts and viewed by me). I have not seen emails sent ...
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2answers
201 views

Kali Linux/Metasploit in VirtualBox - Issue with ports

I've been attempting to get port 4444 to open these past couple of days. I finally figured I'd try to get it working on my Windows machine first and I finally got it. Now, no matter what I do in the ...
3
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1answer
128 views

Monitoring an uninvited guest on my WLAN? [duplicate]

At home I configured a common, residential, consumer-grade wireless network. It is build from a Broadcom router connecting a few personal devices (i.e. my laptop & smartphone) to the Internet. My ...
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1answer
133 views

How to use nmap through proxychains?

Iam running nmap through proxychains using this comand proxychains nmap -v scanme.namp.org This produced an error showing like this root@kali:~# proxychains nmap -v scanme.nmap.org ProxyChains-3....
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1answer
56 views

Random IPs in ARP/RARP table with the same mac address?

I was looking at my router settings and saw a bunch of IPs with the same mac address in the ARP/RARP table. The GEOlocation of them all ranges across my country, any ideas to why they are there? ...
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2answers
150 views

Suspicious Network Activity - is my system compromised?

When using Firefox to open a blank page, I have a weird network connection that shows under Network Activity in Resource Monitor (Windows 7). The address is: insiders-guide.pacedev.com. A screenshot:...
3
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2answers
167 views

How to map a network passively with wireshark dumps?

I'm currently diving into network mapping and thought that in order to do this stealthily why not listen to the existing network traffic; a wireshark dump usually contains a metric ton of information -...
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2answers
268 views
+100

Is it possible to identify the source of message in whatsapp?

Is it possible to identify the real source of message in whatsapp? Scenario : Texting whatsapp message to a group,one of the group member forwards it to another and it goes on atlast one day it ...
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1answer
123 views

Would a DMZ be safe to use with a software firewall for home networking?

If I set up a Windows 10 PC with a software firewall (TinyWall, which is a front end for Windows Firewall) and blocked all traffic except for a few applications and ports I would be using (Minecraft ...
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1answer
125 views

How is UDP hijacking even possible?

My doubt is this: UDP has no sequence numbers, so what indeed is the concept behind UDP session hijacking?
2
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0answers
131 views

Unknown MAC in network

A few days ago, I noticed an unknown MAC address in the statistics page of my home router. The OUI lookup yields Cisco as manufacturer. However, I don't have such a device in my network -- actually, I ...
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2answers
39 views

RBAC togehter with AAA?

I'm taking a network course and my teacher has not been answering my emails. I'm supposed to set up "Role based access using privileges with AAA" I thought RBAC and AAA stood in contrast to one and ...
27
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5answers
5k views

Advantages to killing sessions after 5 minutes?

I'm dealing with a server that isn't mine to configure. Something somewhere between me and this server kills any connection after 5 minutes if no traffic passes between the two machines. This includes ...
3
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1answer
138 views

Authenticate tracking device with TCP server

I am building a tracking device and am looking for a secure authentication method to use when the device wants to establish a connection to the server. The server is a TCP server that we open a ...
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3answers
3k views

Does using a live CD make you more vulnerable to remote attacks?

Some people recommend the use of a Linux live CD for online banking, but doesn't that make you more vulnerable to network attacks since it's not updated? I tried installing updates and it required me ...
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2answers
217 views

What can I do about being heavily port scanned?

I have two devices connected wirelessly to my Linksys router while running Symantec Endpoint Protection on my computer. A few days ago I started using the internet by connecting the cable directly to ...
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0answers
62 views

I am hoping someone can shed some light on these nmap scan results

I am concerned that a friends computer may be compromised. They were complaining about the computer getting really hot, difficulty maintaining an online connection, finding unread non junk emails in ...
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0answers
30 views

PostScript/Jet Direct port TCP 9100 mandatory for printers?

I'm trying to acquire more knowledge on the topic in order to find and fix a few security issues on printer infrastructures to prevent misuse, pranks and secure all data in it. Currently I have a few ...
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votes
2answers
51 views

What are all the IT security concerns of a small business? [closed]

We are in the process of updating our IT infrastructure and part of this will be a security review. I want to make sure we review every relevant security point. So, what are all the IT security ...
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6answers
148 views

Does MAC address filtering provide security? [duplicate]

Sometimes I need to configure the router and choose which devices can connect to my network (MAC address filtering). For example, limit connections to 3 specific machines. But for an advanced user, it ...
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1answer
70 views

What's Google Inbox request/response obfuscation skill? [closed]

I Inspected Google Inbox network resources via Chrome Developer Tool. I saw some request/response payload and result. This object type is not readable for human. I've never seen this kind of ...
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4answers
103 views

How can I mitigate the risk of my wifi key being shared with strangers through apps?

Sometimes a guest asks for my wifi password, and I gladly give it to them. Sometimes that guest has a wifi sharing app, and said app shares the key with totally random strangers (I know there is some ...
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1answer
163 views

I have internet at home, need to know who visited what? Possible? [closed]

I have internet at home. I wanted to keep a watch on who visited what without putting a computer on for 24 hours and running some proxy software on it. Is there a possibility to get a track of all the ...
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14answers
28k views

How can mom monitor my internet history from a distance?

This might sound like a funny question from a twelve-year-old. The less funny part is that I am 21 and currently studying at university (I don't live at University, although I am 15 minutes away. I do ...
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1answer
41 views

Encrypted traffic analysis

If i tunnel any tcp traffic true ssh or any ssl encrypted protocol will some one capturing the traffic capable of do some kind of offline decrypting using the capture file ?? What technic they use to ...
2
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1answer
107 views

Securely sending packets without them being spoofed

I'm working on a simple multiplayer game to break the ice with network programming. I have a system where if the player moves, the server receives a move packet that contains some stuff like the ...
2
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2answers
119 views

Is a router without inbound firewall a security issue across the internet?

Imagine this scenario: Alice has a private subnet (192.168.1.0/24) connected to a router which is also connected to local network B. Alice's router performs NAT (only using MASQUERADE; outbound ...
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1answer
137 views

whats with Chinese and Russian proxy servers?

I keep hearing that if you commit some network activity via Chinese or Russian proxy servers you are very difficult to be tracked down. What is the reason for this other than lack of international ...
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1answer
91 views

Arp spoofing blocks internet [duplicate]

I work on a fresh Kali install running in a VM. I have an external Wi-Fi NIC used only by the VM (I try to not use the internet connection of the host). The network is protected (hum) by WEP, with ...
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25 views

Azure Networking VPN

Company is exploring the option of connecting Azure VNET to the on premise network using either Site-to-Site or ExpressRoute. There are concerns regarding potential vulnerability of internal resources ...
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1answer
81 views

Clicking a lot of website links in Google Maps, then sent through multiple URL redirects, and lastly to a page that made my laptop start beeping?

I was in Google maps clicking on all the website links listed in the side panel, looking at every website really fast. Note, they were all tattoo parlors. One of the links I clicked bounced me through ...
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4answers
1k views

How to determine if a VPN provider respects data confidentiality?

I've read about why I really should use a VPN and I've been looking into different providers, but there's one thing I'm worried about. Can't a VPN provider just look at my traffic all they want and ...
1
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1answer
82 views

How does a malicious user connect to a private network?

I have followed these instructions for setting up a couple of servers to have private networking. It ends by saying "It is important to secure your private networking interface the same way you would ...
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1answer
80 views

man in the middle attack over internet

I've performed some man in the middle attacks (arp poisoning) using ettercap, stuffs on kali linux and i know how exactly it is working. but i was wondering if this attack could be even performed ...
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1answer
60 views

Is it possible to utilize an outbound proxy to upgrade to TLS

Given a situation where legacy technology exists from a system and we don't want to do a complete upgrade (.net in this case w/ version that doesn't have any support for TLS 1.1/1.2) as the product ...
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0answers
43 views

Inconsistent duplicate TCP packets

How often does it happen that we benignly see a TCP packet that is retransmitted but has a different payload the second time? In other words, how often is it that we see a TCP packet with sequence ...
5
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1answer
545 views

Can mobile network operators read WhatsApp metadata?

After turning on end-to-end encryption for WhatsApp is it possible for the network operators to read the metadata of the messages being exchanged? I see here (in Transport security) that metadata ...
3
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2answers
109 views

Is it safe to use TFTP on a local network

Is it safe to use TFTP on a local network to backup configurations? For example we had an experiment where there was an attacker using MITM technique to read all traffic destined for a server. On a ...
0
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1answer
59 views

What could an attacker do with informations about devices in my local network?

If a malicious website would scan my local network (via WebRTC) for devices, what could the attacker do it with it? Does it need to be in the same WIFI-Network in order to login to a service? (for ...
2
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1answer
73 views

Password sent over TLS: threats other than TLS compromise?

One of my findings during a security audit was a password, sent as is over the network. As bad as it sounds, this happens only over HTTPS connection. Some authors suggested here that additional ...
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1answer
1k views

Why would a switch be configured to Fail Open?

I can't understand why a switch would be configured to Fail Open? Surely an attacker could easily exploit this by MAC Flooding which will cause the switch to act like a hub and broadcast messages to ...
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0answers
28 views

Setting specific geoIP in piratebrower

I'm using Piratebrowser. In-order to set specific country's IP, I used the line "ExitNodes {in}" Its working. I'm getting Indian IP in dnsleaktest; but my geolocation is getting a Japan location(...
3
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1answer
189 views

Is UPnP still insecure?

Here's my question: In today's world, on equipment that is properly updated to the latest software/firmware, is UPnP still insecure, or have its vulnerabilities been fixed? This type of question ...
4
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1answer
166 views

What about Long Router Passwords and WPS Push-Buttons

I have a question related to the WPS push-button capability on my router. I know that there is some material on the web about this question, but I haven't found anything that's current enough for my ...
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4answers
198 views

How could online encryption ever work? [duplicate]

I have recently read about the german enigma machine in WW2, It worked in a way that every day the machine configuration was sent per mail to the different operators. (I couldn't find official sources ...
2
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2answers
39 views

Why do ALGs restrict traffic on a given TCP port based on the protocol?

My understanding is that application level gateways restrict the traffic they proxy based on port and protocol - say HTTP over port 80 or MQTT over port 1883. Both types of traffic are using TCP as ...