Concerned with software or hardware firewalls

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0
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1answer
38 views

How would iOS or Android app “firewall” for extended permissions (location, etc) work?

I'm interested in blocking or reporting any application's usage of extended permissions, regardless if they are granted those rights, such as: GPS / Location / Wifi Radio signal data Telemetry My ...
-1
votes
1answer
21 views

What is the difference between ASA 5505 Security Appliance and without Security Appliance

Considering the two devices, ASA 5505 Security Appliance and without Security Appliance. What are the differences between having security appliance and without security appliance? I can not find the ...
1
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0answers
18 views

AWS Firewall Configuration Review [migrated]

We had a situation where an incorrect AWS firewall rule buried in our configuration was causing some headaches. After a few days we found the rule and fixed it. Does anyone know of a good way to ...
8
votes
2answers
1k views

Can a firewall tamper with email attachments?

I am using Thunderbird as an email client for managing my different email accounts. Yesterday my friend sent me an email with a PDF attachment. Today when I tried to open the attachment I get the ...
1
vote
3answers
90 views

How can I scan open ports through Windows Firewall?

I use Kali Linux and VMWare for testing some penetration techniques. The problem is that when I scan ports with Nmap to my Windows IP "all ports are filtered". I know that the firewall is blocking the ...
1
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2answers
194 views

Windows Firewall Connection Security with Certificate

I've been fiddling with the Windows firewall configuration of some computers within a VMWare based LAN (no domain). To aid in my testing and debugging, I created a small, self-hosted console ...
3
votes
1answer
85 views

Are Keystroke and Click Loggers Legal? [closed]

I worked with the firewall "Nobero" which is paid and bit expensive. It is a complete Network Firewall including groups policy, banning URLs and social sites. But It has a feature of tracking users' ...
2
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0answers
47 views

I'm looking for a decent book on network and infrastructure security [closed]

I'm currently looking for a decent book on network and infrastructure security (especially in the enterprise context). Could you point me to one or two recent books, please? Thanks a lot in advance! ...
0
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0answers
10 views

How to set up iptables [migrated]

I try to understand how iptables works but after a lot of hours and read a lot of articles i have stuck. That i want to do is DROP INPUT & FORWARD policy and open some ports. More specifically, i ...
1
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5answers
52k views

How to effectivily block torrents on my network?

Hie, As per my network policy, we have to block all torrent traffic from network. To do this, I used to block all ports above 1024 on my firewall/proxy devices. But due to this, many other ...
1
vote
1answer
90 views

IP over HTTP GET only

Consider the following scenario: There is a client behind a really strict firewall. There is nearly nothing available to 'connect to the internet'. Just DNS resolution and HTTP/HTTPS (some whitelisted ...
1
vote
1answer
79 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 ...
-1
votes
0answers
17 views

What will be the implications of Security Headers when not configured on a web server?

If a web server is not being configured with Security headers,Does it mean an Application provider internally have defensive mechanisms by using IDS/IPS/Firewall ? Not sure about which adds more ...
0
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0answers
16 views

Firewall issues

Background I have an Android device (Minix M5) that I handed to a customer The device only does outbound connections, so no inbound traffic The customer confirmed that s/he opened up the ports ...
0
votes
1answer
45 views

Does firewall count as a subnetwork? [closed]

I need to design a network based on IP 10.1.1.0/24. I have three different subnetworks and a firewall. Does firewall count as a subnetwork? Do I need to assign some IP values to it?
1
vote
3answers
2k views

Power friendly home router, firewall, IDS/IPS setup? [closed]

For those that like to manage their own firewall and run IDS/IPS on their home networks, I'm curious - what are you using and is it power friendly? I used to have a shelf full systems doing various ...
3
votes
1answer
87 views

Benefits of home router behind Linux firewall?

Like a lot of people I have a simple consumer grade router at home. The setup is pretty standard: Ethernet from the cable modem --> router's WAN Given the poor track record of consumer routers ...
0
votes
1answer
68 views

What is the simplest way for a Proxy/UTM to block HTTPS traffic using URL filtering?

I'm building a UTM using ubuntu, How can I block HTTPS traffic using URL filtering? (For example I want to block https://facebook.com) I'm using Squid as a transparent proxy server. Solutions I don't ...
2
votes
3answers
50 views

Utility to build IP exclusion list? [closed]

Are there any utilities out there that can assist in building an IP exclusion list? Scenario: Recently suffered a brute force attack where 50000 failed login attempts came from a multitude of ...
1
vote
0answers
37 views

Firewall in virtual machine

I'm putting my server to use as a file server and a firewall. I'm looking at KVM or Xen VM setup where file server and firewall get their own VMs and host is just supplying the hardware (so Xen way, I ...
0
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0answers
41 views

How secure are Ubiquiti Networks UniFi AP's restricted subnets?

I have a UniFI AP and create a quest network with subnet restriction 192.168.0.0/16. My local network is in 192.168.178.0/24. The gateway is 192.168.178.1. My question is: Is there a way that quests ...
1
vote
1answer
65 views

Give Someone Access to Secure Website? [closed]

I have someone I hired on a Freelancing website working for me - so far he has worked for me for about two weeks and is doing a good job. In order for him to complete his work he will need access to ...
3
votes
2answers
221 views

Is there a trusted independent firewall review company?

I don't know how to write this without it sounding like a plug (lol), but it's not. So please don't close-vote it, even if you really want your editor badge. Here goes: There's this site called ...
1
vote
2answers
181 views

VyprVPN (from GlodenFrog.com) weirdly keeps sending unauthorized suspecious data even after uninstall [closed]

Update: Check the VyprVPN's app developer answer below, seems this is okay and an uninstaller is added to new versions to prevent such issues. Original: I was working with VyprVpn a few months ago, ...
0
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0answers
25 views

Software Defined Perimeter assumptions, properties, deployment scenarios

Since 2013, the Cloud Security Alliance has been working on an open protocol and open source code base for a "Software Defined Perimeter" (SDP). But the whitepaper at SDP Specification v1.0 : Cloud ...
0
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0answers
26 views

Should I add signatures to the Netscaler Application Firewall for Exchange, Cognos, etc?

This link describes that I can use Cenzic, IBM AppScan, Qualsys, Trend Micro and Whitehat files to create an application filter for various products. I'm looking for filters that apply to commonly ...
1
vote
0answers
52 views

Host-based security architecture for web server network

I am begining with network security and after studying for a while about often used technologies I got to this architecture for my home server (sorry it is not in english). I considered 3 basic ...
1
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2answers
85 views

NMap to scan a private subnetwork

I have a test network setup based on virtual machines. My host machine, a web server and the firewall is under the 192.168.0.0/24 network (gateway is 192.168.0.1); a server machine is located behind ...
4
votes
1answer
77 views

Can NATs and firewalls blacklist IPs when trying to UDP hole punch?

I am developing a P2P application that will make use of UDP hole punch to connect two peers behind NAT. When dealing with connections between a cone and a symmetric, unpredictable NATs, however, hole ...
2
votes
3answers
167 views

Most secure location of database

Let's say I have a straight forward completely database driven web site application and I store my database on my web server in the DMZ. I won't be broadcasting the IP address of my database because I ...
0
votes
2answers
54 views

Security devices other than firewall and IDS [closed]

I was just studying about firewalls and IDS/IPS and had a doubt. Are these the only two major security devices that a company invests in? or are there other equipment and security controls?
2
votes
2answers
190 views

Google DNS in Firewall logs

I was viewing my firewall logs and come across the IP 8.8.8.8. Further check reveals it belongs to Google DNS. And such traffic has been going out from some of our LAN segment PCs. From here on, how ...
0
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2answers
80 views

Does anyone know how / what this technique is called? [closed]

When using public wireless it needs you to sign in and from what I've gathered it allows you to have access to the internet and provides you with your own network and is not shared with any other ...
6
votes
4answers
27k views

Windows Firewall - how to block inbound for all .exe files in a folder

In Windows Firewall with Advanced Settings I can create a rule which blocks all inbound or outbound traffic for particular program by pointing to its .exe file. The problem is that this program has ...
8
votes
1answer
1k views

Why is Windows Explorer making external connections?

I'm seeing Windows Explorer (explorer.exe) establishing connections to external IPs: Also verified with cmd: C:\Windows\system32>tasklist|find "explorer.exe" explorer.exe 4052 ...
1
vote
4answers
24k views

What is the difference between antivirus and firewalls

I need a brief explanation about the differences between antiviruses and firewalls
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 ...
1
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0answers
53 views

Is it safe to whitelist CDN domains?

I am trying to whitelist URLs for my PC but I want to eventually roll out the rules to my small company's firewall. But I'm having trouble with CDNs since a page may load content from many distinct ...
0
votes
1answer
90 views

Do I need dedicated firewall? [closed]

I have two servers in the datacenter. FreeBSD <--> Windows Server FreeBSD configured as a gateway for Windows Server. What is the best: FreeBSD has only firewall. All services are on the Win ...
1
vote
2answers
231 views

Two-factor port-knocking via SMS (TXT)

It seems to me that a useful alternative or supplement to traditional port-knocking, fwknop, etc, for a system requiring only occasional access, would be to: Set up a one-time pad of keys, and a ...
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 ...
7
votes
2answers
452 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
47 views

Block An IP Address Scanner On Mac [closed]

I'm working on an prototype that can spot network scanners, which is working and it spits out the IP address of the scanners, but I need to block them now. Is there any way to block an IP address ...
7
votes
2answers
3k views

Is server hardening with GRSecurity really necessary on the CentOS 6.3 environment?

I consider myself to be reasonably good with IT, however I am relatively fresh at server and system administration. I am a web developer for my company and I have been charged with setting up and ...
16
votes
4answers
2k views

ESET warns: Skype attempting to communicate with unknown remote computer

I am frequently getting warnings from my ESET firewall, like that pictured below, that Skype is attempting to communicate over SSL with a remote computer that has an untrusted certificate: The ...
2
votes
3answers
1k views

How to prevent attacks to server

I have 3 CentOS server configured for my applications. Recently I recognized that there is so many attacks to my servers. I have so many logs about attempt to login to my servers using sshd from ...
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 ...
0
votes
2answers
235 views

using html5 websockets to bypass firewall TCP policy

I've read that html5 enables opening tcp sockets from the client side in its "websocket" feature. Firewalls as I recollect may be configured to block tcp connections initiated from "the outside" by ...
1
vote
1answer
92 views

How much of your web browsing behavior is VISIBLE to the administrators when you're behind HTTPS or VPN? [closed]

For example. If you're behind a VPN and want to get on on facebook and youtube. Will all outgoing traffic need to make a request to the firewall first? I don't really know extensively how well a ...
7
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3answers
3k views

Is it necessary to setup a firewall in both PC and router?

If I have the router firewall enabled, is it really necessary to setup iptables in my system? Isn't it a little redundant? For example I add a rule in the router where the PC can't use the port ...