Questions tagged [internet-security]

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Test of cybersecurity for my postfix mail server [closed]

i finished to create my postfix mail server with anti-spam spamassassin and anti-virus clamav and it work perfectly, i added to my domain spf,dkim and dmarc . so new i'm searching how can i do test ...
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2answers
65 views

Why are wireless not secure? [closed]

I would like to ask Why are wireless networks not considered secure despite the presence of some safeguards such as encryption, reliability, SSID, use VPN, and integrity? thank you.
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3answers
154 views

Someone's trying to hack me, don't understand how they are bypassing my router, please help me understand?

Mar 5 00:39:44 deepcool sshd[259265]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.220.78 user=root Mar 5 00:39:47 deepcool sshd[259265]: Failed ...
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1answer
46 views

Failed login attempts, constant brute force

I'm running a VPS with an iptables firewall (configured via ufw). I have shut down all traffic with: sudo ufw default deny incoming sudo ufw default allow outgoing After that I have opened certain ...
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0answers
16 views

Shared Cloud Storage for Teams with option to upload only and no download

I am looking for a shared cloud storage for teams. Ideally the admin can assign what directories the members can see. And the members can only upload files and see the contents in the directory but ...
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0answers
34 views

Secure database connection from public IP

We have an Android App and a website that requires connection to local database. Working Scenario is Online Website (.net) is in one dedicated virtual server with public ip. Then we have another ...
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0answers
34 views

Network Protocol Violation error for some websites when using public wifi with no VPN. Is this indicative of a hacking attempt?

Below is the error I receive in Firefox when accesing Gmail, Google Search and other websites owned by Google. The site at https://mail.google.com/mail/gb/u/0/#inbox has experienced a network ...
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0answers
90 views

Can I decrypt a gpg encrypted file on any computer?

I am storing some 2FA recovery keys inside a txt file, which I then encrypted using gpg -c file, I can decrypt it fine in my own computer (virtual machine actually). But I was wondering, if something ...
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1answer
20 views

If I were to set up a router to route network traffic directly through a VPN, do I lose the advantages of PFS?

I have been learning about the advantages of connecting to the internet via a VPN but before I jump in with both feet I’ve decided to do some reading around the subject to understand what I’m getting ...
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3answers
1k views

Configuring Windows to only allow traffic through VPN

I would like to configure Windows 10 to only allow traffic through a VPN connection. For example, Firefox won't have internet access if the VPN is not connected. I want to be able to turn this ...
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2answers
112 views

Am I broadcasting or what?

My internet speed is bad. When I connect with a cable bypassing the router, it is good. Router seems to be fine however, and configuration is seemingly OK too. Thinking about interference, I looked ...
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0answers
14 views

Privacy Use open vpn through unsecure server

I want use a unknown server through open vpn . I don't know the server is safe or not . Is open vpn keep my information safe ? Is that ok to use that ? The manager of server can spy my information ...
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1answer
2k views

Dealing with .logicdata file

I am practicing for CTFs and have this assignment on hardware security. I was given a .logicdata file and wonder how I can open it to analyze it?
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2answers
165 views

How to access a website on a separate vlan (DMZ)

I have an Apache webserver (on Raspberry PI) running in my home environment. This website is accessable from the Internet by port forwarding on my router. The protect my LAN I have defined a separate ...
1
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1answer
28 views

Pfsense firewall and modem

Should pfsense be connected directly with the ISP or should it sit behind the ISP provided modem. If so, should we use pfsense for security reasons only or to improve performance as claimed in this ...
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1answer
122 views

How to save browser cookies in ram?

I have a laptop I use in public where I access some sensible information over the browser. I already encrypted it and cookies are automatically deleten when I close the browser. The problem is, if ...
2
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1answer
29 views

Does chaining 2 VPN's with VM need extra settings?

Hi I am wondering if chaining 2 different VPNs from 2 different VPN providers through a Virtual Machine needs any extra routing settings or any extra settings in general.. I have searched and I've ...
2
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3answers
3k views

Security differences in going online by WiFI vs by Ethernet lan cable

Which relevant differences are there when comparing: going online with a computer via WiFI connection or using a Ethernet port and connect with Lan cable to the computer? 1) Aspects such as: VPNs, ...
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0answers
21 views

DNS Server is flooded with localhost resolution

I have a public DNS server and can be accessible by anyone. Recently we have been flooded with thousands of DNS queries trying to resolve a "localhost" such as these: Is this supposed to be intended ...
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1answer
25 views

Where can I find wifi profiles?

Laptop recently got lost. Is there any way to grab the wifi profiles off of that laptop? Microsoft's sync doesn't work as both PC's have to be on a running for it to transmit data. For example I ...
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1answer
62 views

Motorola MG7700 on XFINITY, mysterious user IDs and passwords

I did a "backup" via the user interface on my Motorla MG7700 modem/router connected to Xfinity. In the dump, I found all IDs and passwords are unencrypted. Motorola acknowledges that much. What ...
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1answer
65 views

How to show keys in netsh without mentioning the name parameter

Queria saber se no netsh show profiles key=clear,ao invés de colocar o ssid de cada rede para ver o "Conteúdo da chave", poderia mostrar de uma forma geral. Já tentei usar o "*" no name,mas não deu ...
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1answer
36 views

Is an open port on Router a threat if it's forwarded to a host which not exist

Consider we have port 65434 open on router (open for WAN). The port forwarding is done to a host which does not exist. Can a hacker exploit this open port on router which leads nowhere?
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1answer
52 views

Options to protect open ports

What are the best/common options to protect an open Port? For example for Plex or torrent A few I can think of: change Port number from standard to random unused one to help obfuscate Setup firewall ...
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1answer
87 views

Can somebody with link can edit exe or APK files on google driver?

If I share an EXE or APK file with the option of editing on Google Drive, can anyone actually change it? I mean the file?
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1answer
327 views

Secure shared internet connection

I share my internet connection with a neighbor. They connect through wifi. I have computers running Windows and Linux, Android smartphones, Chromecast and TV. Question: how can I prevent my devices ...
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1answer
90 views

How safe is it to use Gmail, Facebook, YouTube, Amazon on Public Wifi or more official Wifi such as Apple Store Wifi?

First of all, somebody could be pretending to be the airport Wifi by setting the Wifi ID to be "Free Airport Wifi", so it might not be the "official Wifi". And either it is "official" or "non-...
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1answer
91 views

Are these signs that my computer is being monitored or hacked?

I'm using this ACTalk.exe for work. It's an online classroom. Several months ago, whenever I look at Windows Performance Monitor, I can see ACTalk.exe connecting to several IP address which I think is ...
19
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3answers
7k views

Can an untrusted VPN client monitor my network activity?

My scenario is: This is my own Windows 10 machine. The client has installed a VPN that connects me to their servers. The VPN is auto-connected when my Windows 10 machine is booted up. If I am not on ...
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1answer
2k views

How can I add an exception to the Content Security Policy in Firefox 56?

I am using Firefox 56 because it is the last version that still allows me to use my add-ons. Today Twitter has changed something in their coding, so that the videos posted on Twitter stopped playing ...
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1answer
141 views

Need to stop ex husband from getting into my desktop [closed]

First, I’m VERY sorry if I am in the WRONG place here. I know my way around computers, compared to all of you, probably NOT AT ALL! I am in the middle of a divorce from a VERY abusive man who is ...
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0answers
38 views

Apache is Adding Javascript in HTML File

Today I got a strange situation where my Apache Server is adding a bit of Javascript code just before closing tag. I tried to find out but could not success what is going here on the server. I ...
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1answer
182 views

Wifi Security Vs Authentication Vs Encryption

While configuring a TPL Wi-Fi Access Point I found out that there are three similar parameters in it which need to be set to make it work properly. If these parameters are not set correctly then some ...
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1answer
44 views

Is having all wireless devices (both visitors and home users) use a guest wireless SSID a bad idea?

I'm reluctant to have any wireless devices with visibility into my home LAN systems (PCs / home servers). So I was thinking of having all wireless devices use the guest SSID. Is this a bad idea? I don'...
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1answer
125 views

Emails are automatically sent to Chinese addresses - scam/spam/virus?

My IT-colleagues have noticed that a (non-IT) user in our work network has some strange things going on in her mailbox. In the user's sent folder we noticed a bunch of emails with all Chinese ...
2
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1answer
60 views

Edit Firefox multi container configuration

I have several containers configured on my Firefox and I have been using for a while, so container have information associated. However, sometimes I was not very focused and I used the wrong one for ...
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1answer
69 views

Remote machines making unauthorized SSH login attempts

I recently configured my external-facing router to forward traffic to port 22 on one machine on my LAN. SSHD is the only service listening on port 22. Immediately I received traffic from IP ...
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1answer
88 views

NMap Result -A reference meaning

I ran nmap command for ssl enum cipher and got the output something like this (Could not copy paste due to intra network restrictions ) TLS1.0 TLS----SHA256 -A --- Cipher Prefernce -...
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2answers
3k views

COMODO antivirus : Getting message “Security agent could not be started” after uninstallation

I had COMODO antivirus installed in my Windows 8.1, 64 bit machine. I recently uninstalled it. But whenever I restart my machine it always prompts me this error message. Does it mean the ...
0
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1answer
55 views

Are my credentials secure when I browse through a corporate web-proxy?

By "my credentials" I mean the username and password that I provide upon log-in in various web sites, such as Google, Microsoft etc. My company is allowing browsing through a web-proxy. What ...
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1answer
43 views

Entering a random number sequence seed under surveillance [closed]

I'm trying to transmit a continuous sequence of random numbers from my computer over to another country (for validation purpose). This sequence is a series of pseudo random numbers recursively ...
0
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1answer
62 views

Software for home routers to block HTTPS website

I have a netgear R7000p and I am looking to block snapchat on the home router. Is there anything that could help me with this. I have tried to use OpenDNS and the website blocking functionality built ...
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2answers
2k views

Display Chrome for Windows security zone for page

Is it possible to determine in Chrome what security zone it has decided to put a page into in the same way Internet Explorer 11 displays the zone for the current page when you select properties from ...
0
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1answer
233 views

How do I find out what this unknown device is on my network?

Backstory: I have a home PC network that is mixed hardwired and wireless, with a wireless access point and hardwired PCs - connected to a dual-WAN capable router, connected to a cable modem, connected ...
0
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1answer
630 views

IE11: security level edit bar not even visible

The security level bar is missing in IE11 (it's german, sorry for that): I have read the documentation of some registry keys and modified them to test a few things. But I cannot make it appear. ...
0
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1answer
210 views

How to secure a public-facing host?

If I configure my cable modem' built-in router to forward port 80 or port 443 to my upcoming Raspbian host, what else do I need to do to un the router's settings and in the Raspbian settings to keep ...
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2answers
61 views

Security implications of using screen-capturing software to monitor a user's activity [closed]

Buried deep within the Privacy Policy of a purely cloud-based financial services business (with no software downloaded to the user's device) is the following statement: "We use screen capturing ...
0
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1answer
482 views

Intercept traffic in open wifi hotspot to scare family into using VPN [closed]

I recently setup my own VPN and I love it. Now I'm staying at a hotel and there is only a public wifi hotspot that doesn't even require a password. I'm using my VPN, but my family won't listen to me ...
0
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1answer
53 views

Developer console activates by itself

Over the last day, whenever a friend opens gmail in any installed browser (Chrome, Firefox, Edge) on her Win 10 machine, the developer console opens automatically. Why might this be and how to stop ...
3
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2answers
50k views

Internet Options to add Trusted Site Greyed Out - SysPreped Windows 10 LTSB

I just deployed an custom Windows 10 ISO I created and I can't set my local file server as a trusted site in internet options. The site button is greyed out. The only change I made in the image was ...