Concerned with software or hardware firewalls

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2answers
223 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 ...
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1answer
36 views

Firewall egress filtering by domain

In our production environment, we are connecting to a few core external service providers though their APIs and are required to have all other services blocked (PCI DSS). We currently have a firewall ...
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1answer
94 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 ...
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1answer
100 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 ...
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1answer
105 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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1answer
43 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 ...
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1answer
29 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 ...
2
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0answers
527 views

cisco asa syn flood detection and response not working

I have a Cisco ASA 5510 (ASA Version 8.3(2)) that has been getting a syn flood attack on it (or more accurately through it - targeting a host behind it) a couple of times a day for the past few days. ...
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0answers
141 views

Shorewall stopped policies - routeback

Here goes a very specific question about the insides of Shorewall and Iptables in general. Shorewall supports configuration of "Stopped Policies" using the file routestopped, which defines the ...
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0answers
60 views

Web/search engine spider on local network?

I was setting up a test webserver on my local network earlier, and whilst sorting out the firewall I noticed the following in the log (/var/log/ufw.log - I'm using UFW on Ubuntu 14.04): Jul 9 ...
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0answers
40 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 ...
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0answers
68 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 ...
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0answers
209 views

Configure icefloor to prevent leaks when VPN connected

I am trying to configure icefloor firewall on OS X 10.9 so as to make sure all traffic will go through VPN. I recently notified that even with "Route all traffic through vpn" option in tunnelblick ...
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0answers
99 views

What is the security of Powershell “TrustedHosts”? (is it just a name match)?

Powershell has a TrustedHost section that is configured like this: winrm s winrm/config/client '@{TrustedHosts="CorpServer56"}' What security is implied for CorpServer56? Is it just an ASCII name ...
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0answers
203 views

How should I configure my Tor-dedicated firewall for optimum security?

I'm setting up a Tor-based isolating proxy using the 'Anonymizing Middlebox' iptables rules specified here: https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy i.e. iptables -t nat ...
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0answers
73 views

API deployment infrastructure

We are going to deploy our service, it's drupal based with some additional REST APIs. The drupal servers will be (loadbalanced) put in the DMZ. We think to deploy the REST APIs on an app server in ...
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0answers
388 views

Proxy via pfSense and exclusions for DNS

I have posted this to NetworkEngineering.SE, as that seems the more suitable audience for this question. I will leave this question open here but am happy to see it closed. I just did not want to ...
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0answers
70 views

Pf rules configuration

Do these rules appear to be an adequate start? _interface="en1" _linode="66.228.57.75" #lish-atlanta.linode.com _ssh=" { 74.207.224.182 66.175.210.225 } " set block-policy drop set skip on lo0 ...
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0answers
263 views

Throttling DropBox behind a firewall

Our office network bandwidth gets choked when an employee copies a large file into her DropBox, since it gets downloaded on several machines (of other employees). LAN Sync is an option, but needs to ...
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0answers
166 views

Why my proxy is still having some connections blocked

I am behind a firewall in France. I connect to proxy A, in Ireland with Dante via SSH port 22 and make a tunnel forwarding port 1080. The proxy works as expected but still having a port range ...
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0answers
14 views

how to configure naxsi to accept json format in rest apis?

For example one of my APIs is: Post request: /api/v0/login body: { "username":"xxx@ggg.com", "password":"eeeee" } I want to secure this API with nexsi, I could not find anywhere to config naxsi ...
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0answers
18 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 ...
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55 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 ...
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33 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 ...
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31 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 ...
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192 views

explorer.exe outbound (Unexplained TCP Connections)

So I've already disabled SSDP Discovery in Windows Services. I'm also not conducting any searches. I also have file indexing disabled on my system. I noticed a number of outbound connections coming ...
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69 views

Firewall requirements for SaaS service providers

I have not had much success compiling a workable overview on the topic of firewalls and application service providers, despite making a rather extensive contribution to Google's workload this month. ...
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0answers
164 views

Is there any method to prevent/trace ddos attack?

I have a debian linux server which run a few online game services. I have some competitors in this area and i think one of them is behind the ddos attacks. I have full access to the router, so I set ...
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338 views

How to configure ettercap-ng's etter.conf to use sysctl instead of ipfw for sslstrip plugin to work on OSX Yosemite?

When I run ettercap-ng with sudo ettercap -Tq -i en1 -M arp /// I get the an error based on ipfw from the etter.conf file, like this: WARNING: ...
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88 views

Blocking IP After multiple connection with Netsh advfirewall to mitigate DDos

Hello I wanna block Ip address if they exceed 20 connections with port 80 TCP for HTTP Server. I wanna do this using Netsh advfirewall, In Linux I use IPTables: iptables -I INPUT -p tcp --dport ...