Concerned with software or hardware firewalls

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25 views

Anything more i can do to be more safer? [on hold]

Wi-fi security: WPS disabled WPA2-PSK + AES + 54.000 SECONDS(15h) Group Key Update Period UpnP disabled Spi firewall enable All ALG enable Ignore ping packet from WAN and Lan to router Default ...
7
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5answers
10k views

How to trace a DDOS attack on a dedicated server and block it?

I have a dedicated server and I'm hosting a game, and the web page (using Apache) for account registering. The server is being ddosed since 8 months ago till today. I've tried to talk with the server ...
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1answer
481 views

JUNIPER Junos Pulse - how to apply policy to device

We'd like to set up and use Juniper Junos Pulse on iphone and ipad for access to Corporate mail. We have juniper SA and have prepared the policy, but how do we apply the policy to the devices?
4
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2answers
36 views

monitor port scan on the same segment

if theres a port scan on the same segment and it does not reach the firewall at all, it is not detectable by anything. is there any solution to that ? maybe using the windows fw on ach workstation to ...
0
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2answers
103 views

Port Scan Detected and Blocked! - Bitdefender 2014

I have Bitdefender Total Security 2014 Recently I have been getting the message/alert "Port scan detected and blocked", I did not cared about it much till I getting increasing specially in a specific ...
2
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2answers
252 views

ASA5505 DMZ issue

I have ASA5505 , connected to the WAN on port 0 (called Vlan2), and connected to my development LAN on port 7 (Called Vlan1). I want to add DMZ, and I connected switch and servers to port 3, and ...
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0answers
17 views

Google Cloud and Firewall

I am trying to look for a server which is able to provide security to host some software tools. I was looking at cloud solutions such as google cloud and amazon aws services and comparing them with a ...
1
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0answers
37 views

firewall zones for private web server

How can I configure the zones of a firewall to provide maximal security for a private web application? Here is the use case: 1.) Twenty known users will have http/https access to the web ...
2
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1answer
49 views

Using Linux iptables to implement a stateless, packet filtering firewall

When I began my career in network security, almost a decade back, the industry standard was stateful firewalls that even had the ability to inspect some application layer protocols. I had only heard ...
50
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9answers
5k views

How do you explain to experts that a database server should not reside in the DMZ?

Our security experts, database administrators, network team and infrastructure team are all saying it's OK to have the database server located in the DMZ along with the HTTP server and middle-ware ...
2
votes
1answer
374 views

How to configure Suricata to not interfere with virtual machine

I'm currently planning on setting up Suricata as a firewall on my laptop. I'm wondering however if it's possible to set Suricata to not interfere with traffic to and from specific virtual machines ...
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0answers
18 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 ...
0
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1answer
51 views

What is a Sonic Wall? [closed]

I found an old box in my garage and it contains a 'sonicwall' device. It looks like a huge router but I am unsure what it does. Do I hook it up between my modem and router and it somehow provides ...
0
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4answers
85 views

Do firewall rules have to be symmetric? That is, does a firewall have to block a particular traffic type both inbound and outbound

Do firewall rules have to be symmetric? That is, does a firewall have to block a particular traffic type both inbound (to the protected site) and outbound (from the site)? Why or why not? I have to ...
0
votes
1answer
230 views

Foreign MRT.exe?

I was managing my firewall using AVG and I noticed this was allowed: I have north american locale, and sometimes Japanese locality(?), and that is not Japanese. It is getting through my firewall, ...
1
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1answer
40 views

Will changing the 'Action' for Heartbleed signatures in PAN from 'alert' to 'drop' have any production impact in my organization?

I have been seeing some Heart-bleed PAN alerts. I want to set the default action from 'alert' to 'drop'. But I am not sure if this would block some legitimate packets. Since there are a vast number ...
1
vote
1answer
310 views

Attacking a server on port 80 while only port 22 is open on the firewall

There is a question bugging me a after reading on network security. Theoretical situation: there is a packet-filtering firewall, which only accepts tcp/ip communication with destination port 22 on a ...
2
votes
1answer
87 views

Setting up NAT with firewall for RDP connection

I have a vendor who needs to connect remotely to one of our servers. What I thought I would do is setup a NAT rule in our firewall. I have a public IP address that I will have translated to the local ...
1
vote
1answer
69 views

How can I implement a whitelist based on packet content?

At the moment I am looking for some way on Linux to have packet filter whitelisting done but based on fine-grained parameters such as packet content rather than more general parameters such as ...
0
votes
3answers
51 views

How can I scan hosted POP3 or IMAP e-mail for viruses?

In our company we use a hosting provider for e-mails and it seems they don't scan incoming email against viruses. And our employees does not very careful about attachments... So we deal with virus ...
0
votes
1answer
40 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 ...
0
votes
1answer
68 views

ESET detected incoming connection to Rundll32

My ESET Smart Security 7 detected incoming connection from an external computer, since Rundll32 can be run by any programs on my computer and I don't know which program is doing this, so I am ...
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4answers
153 views

What problems if any are caused by opening a port in the firewall that no program listens on?

I have a port forwarded and open in the firewall that I sometimes use to play games with friends over the internet. The game server doesn't run 24/7, only when I'm actually playing is something ...
0
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0answers
15 views

PC in VMWARE can ping Host computer but host computer can't ping the VMWARE machine [migrated]

I'm creating PFsense lab with this diagram The Webserver can ping the outside host (PC3) but the PC3 can't ping the webserver. The firewall i'm using is PFSense. I have disabled all Window ...
2
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1answer
90 views

Best practice in securing a web server and an offsite worker

Suppose I'm hosting a web server and a separate box offsite that crunches data. The web server interacts with the worker using the worker's API over port 2888. What would be the design of a secure ...
0
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1answer
115 views

How does the Dell Sonic wall Authentication works?

My College Router has Dell Sonicwall authentication. We will be automatically redirected to the login page. If the username and password is correct a new popup opens showing that user 'x' has logged ...
2
votes
2answers
64 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 ...
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vote
2answers
49 views

Proper way to allow access to systems within different offices? [closed]

I have a system that sysadmins in a few of our global offices need to access. What is the best way to grant them access through our firewall to this system? I don't think that having them use static ...
0
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4answers
13k views

What is the difference between antivirus and firewalls

I need a brief explanation about the differences between antiviruses and firewalls
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2answers
84 views

What are the difference between IPS and WAF in terms of DDoS?

I have heard about both Web Application Firewalls (WAF) and Intrusion Prevention Systems (IPS). Which is better in preventing a Distributed Denial of Service (DDoS) attack and why?
8
votes
1answer
20k views

Wireless client isolation - how does it work, and can it be bypassed?

Many SOHO routers these days support a feature called "wireless client isolation", or similar. What this is supposed to do, in principle, is to limit the connectivity between wireless clients ...
1
vote
1answer
98 views

Upload data from Internet to DMZ to an intranet

I've got the following situation: A web server located in a DMZ receives file uploads from web browsers. The uploaded files are stored on the web server's file system. In the next step, these files ...
1
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1answer
50 views

How can I keep track of the packages to check any strange behaviour [closed]

I've just realized there was a girl that asked someone to hack my computer and also my telephone (that's why WhatsApp was working strange). Right now I'm trying to protect myself at least on my ...
2
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4answers
78 views

Do I need antivirus for this unusual installation - or just firewall?

I'm donating an old Windows XP laptop to a school. The machine will spend its golden years doing only one thing - a process that consists of just three steps: Recording lectures and discussions ...
0
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1answer
51 views

Firewall with packet capture and inspection?

Is there such thing as a firewall with packet inspection? Most outbound firewalls simply prompt the user with "program.exe is trying to connect to the internet - allow or deny?". I find it impossible ...
2
votes
3answers
118 views

Where to place a vulnerability scanner within a data center

There is currently a debate in my office on the best location to place a vulnerability scanner (a distributed scanner - Rapid7 Nexpose, using scan engines) within a data center. I see two options: ...
0
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1answer
59 views

Who will fix the vulnerabilities found in Firewall

As a security guy, i run vulnerability scan and found vulnerabilities in firewall Like as follows SSL Server Allows Anonymous Authentication Vulnerability Solution SOLUTION: Disable support for ...
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2answers
53 views

Tools to check the firewall Configurations as per PCI standards [closed]

How do you audit the Firewall rules and configuration policies as per PCI standard. What are the tools used for it.
1
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1answer
82 views

What is the difference between Internal and External scan in PCI

Is each firewall interface IP is considered as external IP?. Do we need to scan each interface IP??. What is an internal scan? What are the elements for internal, how we do it?.
2
votes
1answer
95 views

How to block traffic coming from an “public” WiFi hotspot and going to the LAN (iptables)

I followed this tutorial (http://elinux.org/RPI-Wireless-Hotspot) for an Wifi Hotspot in the guesthouse. This is working fine, but every device on the WiFi network can reach any LAN device in the LAN ...
1
vote
1answer
88 views

How to detect/mitigate UDP port scan using OpenBSD and pf

One of our OpenBSD firewalls experienced a flood of UDP traffic from a compromised host within our internal network. The traffic was exchanged between the compromised internal host and a single ...
2
votes
0answers
149 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. ...
3
votes
5answers
160 views

Windows: Any method to enforce user confirmation before the browser opens a URL requested by an external desktop app?

A robust outgoing firewall will protect against desktop applications directly connecting to the internet without your permission. However, as the browser is a generally authorized application for ...
1
vote
1answer
77 views

Strange TCP traffic on Mac OS X from 'rdmd'

I noticed some curious traffic today on my MBP after running lsof. It seemed that a process called rdmd had begun 3 TCP sessions: rdmd 85842 0 9u IPv4 0xca0e547f0a118fdb 0t0 TCP ...
4
votes
5answers
15k views

How to bypass tcpwrapped with nmap scan

I'd a scan task and I faced following result Host is up (0.032s latency). Scanned at 2012-10-25 16:06:38 AST for 856s PORT STATE SERVICE VERSION 1/tcp open tcpwrapped 3/tcp open ...
0
votes
3answers
63 views

Confusion over a firewall and proxy

A proxy usually controls HTTP(S) traffic going outbound. IE it can be blocked, and so forth. How is this different to a firewall working on port 80/443? Also, if a firewall is to control outbound ...
1
vote
2answers
326 views

VPN Client - Addtional Security Layer or a Useless Feature

I have a corporate web portal which is used for staff collaboration including a web-based mail interface connected to MySQL Database, corporate calendar, file storage, customer contacts data with ...
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3answers
190 views
1
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0answers
74 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 ...
1
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1answer
51 views

Based on which criteria is this outbound traffic being blocked? Only HTTP passes, on any TCP port?

There is a server program running behind a home ADSL modem/router, at a premise that I'll call C; the program listens on TCP port 29401, and accepts connections using a custom binary, non-HTTP, ...