A firewall is a piece of software that controls what connections can be made to and from a network.

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PF firewall: How to disable all filtering on loopback interface EXCEPT specific port forwarding rules?

PF question on OS X Yosemite 10.10.4: I know that set skip on lo0 disables all filtering (nat and redirects) on lo0, but what if I need to save the httpd port forwarding rules on this interface while ...
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38 views

Allow trusted IP and Block others in Windows Server 2008 R2

For protection of a Web Server, I need to allow some trusted IP and block others. The solution I have tried: Create 2 inbound rules : Allow some IP and RDP IP Block All this resulted on ...
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4 views

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

or 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 naxsi (Nginx Anti XSS & SQL Injection), I could ...
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9 views

Can I reference multiple interfaces in OS X pf with wildcards?

I use /etc/pf.conf and pfctl from within a program to programmatically block and unblock network interfaces. When I for example want to unblock all tunnel interfaces I want to unblock all interfaces ...
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7 views

windows firewall allowing iis to serve default site to local machines despite block rules

Running Windows 7; trying to use WFC and Windows Firewall to block inbound IIS connections except those originating from my database server. No matter what I block or unblock, the local network ...
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1answer
36 views

Windows 7 Batch file to turn off firewall and restart computer

I'm trying to create a batch file to do as the title states. Currently, I have: netsh advfirewall set allprofiles state off sleep 30 C:\windows\system32\shutdown -r -t 00 This batch file restarts ...
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7 views

Firewall Rules - Process\Application [closed]

Wouldn't it work if i just modified the process rules? If i block the chrome process that's associated with chrome and leave the application to allowed, would the application still pass the ...
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1answer
44 views

iptables - allow access to a web server from the outside

I am trying to allow access to a web server from the outside and I am getting nowhere. Granted I do not have any experience in iptables, but I have dabbled in Cisco ACL and NAT. I am not sure what I ...
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13 views

NAT configuration for HTTP server

There is a router (192.168.1.1) having static public IP(hypothetically- 8.8.8.8). This router is programmed to forward all incoming port 80 (TCP/UDP) connections to a particular IP (192.168.1.105). ...
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40 views

What is changing my Windows Firewall rules?

I have pretty much explicitly blocked everything in my Windows 8.1 outgoing Windows firewall rules, but the following rules are always enabled again after I restart: ICMPv4-Out, ICMPv6-Out, ...
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43 views

Allow access across subnets not working

I have two routers. One is running DD-WRT and the other is running Tomato. The DD-WRT router is the main router the WAN connection goes through. The Tomato router is for my PIA VPN. DD-WRT is a ...
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8 views

Getting Error 800 Trying to Connect to VPN connection set up on Zyzel USG110

We're using Zyxel USG110 Firewall. I've setup VPN connection on the firewall using the following settings: VPN Gateway * L2TP_GW (for client l2tp connections) - My Address => Interface: wan1 - ...
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1answer
25 views

Firewall filter rules and traceroute

I'm trying to learn how it all goes in networking. I have a working network done by some specialists and I bought new Mikrotik router and done a new LAN in which I want to do some trial&error. So ...
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2answers
30 views

How forward packets from network interface to another

My problem is forward packets from eth2 that is my LAN to eth1 that has access to internet, to allow eth2 to access to internet, here my configuration: auto eth1 iface eth1 inet static address ...
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38 views

Ports open in router settings, Firewall disabled, no DMZ's, port's still appear as closed, why?

So I'm currently attempting to host an IIS and opened the nessesary ports, I can connect to it via localhost and on other machines in the network, however when attempting to connect to it over WAN I ...
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25 views

NETGEAR router-firewall setup

I have a NETGEAR WNDR3400 and it is connected to a NETGEAR FSV338. Do I need both the router and firewall to protect my network, or does the router act as a firewall too? In addition, the firewall and ...
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27 views

how to redirect https to http

A Linux laptop is used as a wifi hotspot during conferences. Audience can connect to consult a webpage with broadcastinglive scientific data. It's captive, nobody can surf the web, all is redirected ...
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20 views

Windows 8.1 Pc remote connection malfunction

For a year or so now I have been using vlc remote apps and remote mouse ones. In the past week both of them have refused to connect to my pc. The problems is on my pc since i have tested the same apps ...
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1answer
39 views

What is the name of a some hardware-device feature which displays user's internet connections?

Problem: I'm trying to find a small hardware device (eg. a modem/router? firewall?) that can tell me who (private LAN IP addresses) is connecting to what other (public) IP's and their up/down ...
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14 views

McAffee Firewall won't allow access to my NAS

I'm using McAfee All Access-Total protection (latest version). I have a NAS available through a switch on my home network. When I start up my computer I cannot get to the NAS. If I turn off McAffee ...
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1answer
29 views

How to config windows firewall so VM Host-only can ping Windows 7

I start a VM (Linux) in host-only network connection (manual IP : 192.168.8.123) under Windows 7. After turn off the VM firewall, I can ping VM from Windows. However, when I try to ping from VM, it ...
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2answers
25 views

Advantages of Multi-Tier and Multi-box firewalls? [closed]

I'm currently doing a University project and am having trouble getting my head around a few concepts. One reason is the looseness of terms in IT, with network tiers referring to several things ...
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1answer
24 views

Force users pass by firewall for a network with 2 gateways, one over firewall and other direct connection

I have a network with 2 default gateways (i.e. A, B). A is behind a firewall, while B is directly connected. I set DHCP for all domain computers to have Default Gateway for A. The firewall is a proxy ...
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1answer
146 views

How can I open a port in my Mac OS X yosemite(firewall)?

I have a java-based server(jar file) and it is running on port 8080. It is running well on my localhost, but I can't access it through other networks I think it's a firewall issue. so, First, I ...
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65 views

Cannot connect to server, error message says “java.net.ConnectException: Connection refused”

I have been trying to get a minecraft server running for some time now to no avail. I apologize for the fact that this is not as technically advanced a question as is intended for this forum, and that ...
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17 views

Mikrotik: One firewall rule for multiple chains?

I created multiple firewall rules for input chain as described in an article and now it seems that I need to create the same set of rules for forward chain. Could I make a rule for multiple chains?
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1answer
34 views

How to block website from MAC in the verizon router firewall settings

I've tried searching for how to configure my verizon router firewall to block certain websites but nothing seems to be working. Picture of what I've done here I did an nslookup for youtube.com and ...
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1answer
16 views

Stateful Firewall

I am a beginner in firewall and trying my hands on stateful firewall rules. I do understand that with stateful rules, the first packet is inspected as per the rules but subsequent packets that belong ...
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2answers
30 views

Use iptables to block local connection

I wish to block all connections (local and remote) to a service running on a particular port, say port 1000. I have tried the following command: iptables -I INPUT 1 -p tcp --dport 9999 -j DROP ...
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44 views

502 bad gateway after putting up firewall nginx

My server was working, then I added a firewall for a bunch of ports! And now I get the error: 502 Bad Gateway nginx/1.4.6 (Ubuntu) Nginx server { listen 80; server_name 45.79.80.140; ...
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33 views

Windows 7: Block an entire folder from accessing the internet (outbound)

Every time I need to block an application from accessing the internet I do so by creating a rule (firewall) for a specific EXE file (or other). Usually there are multiple programs in one folder and ...
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1answer
46 views

Program to block an IP temporarily with iptables

Is there a program on Debian to block an IP address temporarily just by launching a command (specifying the IP and the duration)? With iptables/ip6tables alone I can create a rule, but I would then ...
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36 views

Allowing port access on Windows

I have a message broker running on my computer on port 1883. I tried to telnet that port (to test its accssibility) from a computer on the same network but that didn't work. How can I allow other ...
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1answer
65 views

How to setup firewall ports via logon script

I work as IT suport for public service. We use domain controller and logon scripts. These scripts are pretty helpful, since they can automatically install printers and add network folders as local ...
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46 views

How can I block my PC from receiving/sending any communication with Russian IPs? [closed]

I recently had a scare when a Russian scammer was able to download a keylogger to my PC when I clicked on a game invite sent to me via steam (they cloned a friends account so it looked genuine). Now ...
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28 views

How To Configure Portforwarding with iptables

I have got a "Hypervisor" witch has two interfaces: eth0 Link encap:Ethernet Hardware Adresse d4:3d:7e:fc:b2:db inet Adresse:87.25.34.251 Bcast:87.25.34.255 Maske:255.255.255.192 ...
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39 views

Turning extra 6 LANS into “router” like links using Sophos UTM 9

Hey all I just finished up setting up the UTM 9 Home edition and I currently have it up and running with eth0 as the WAN and eth1 as the LAN. However, my motherboard has a total of 8 Ethernet ports ...
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1answer
41 views

Port Forwarding with 2 NICs via Windows 7 firewall

I have a computer with two network cards, each of them connected to a separate network. I would like to forward all requests that arrive via port X from one networks to port Y on a host in the other ...
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27 views

what steps should I take to correct “Windows Firewall is incorrectly configured” when troubleshooting homegroup issues?

I'm trying to get two computers to connect via the Windows Homegroup. When I run the troubleshooter I see this message: . How should I go about fixing this? Most tips on the web say that you need to ...
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48 views

Blocking whatsapp / IM apps on Windows 7 firewall

I'm using a hosted network which I created and shared the local internet with it. netsh wlan set hostednetwork mode=allow ssid="OWNWIFI" key="12345678" netsh wlan start hosted network So I'm trying ...
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4answers
34 views

can I add a hostname that is reachable everywhere?

i'd like to assign a hostname to our database server that is reachable from both outside and inside the building. Let's say we own a domain at godaddy: ddd.com i'd like our staff to reach the ...
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2answers
38 views

Intrusions in router firewall

Intrusion -> IN=atm8 OUT= SRC=(random ip) DST=(my ip) PROTO=UDP SPT=123 DPT=80 I'm seeing multiple of these in my router's firewall log, I replaced the actual ip from the example given above. For ...
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22 views

is it possible to use certificates on windows firewall?

Scenario: I have a situation where I work from home. I need to connect to a database server on the internet. The server has whitelist rules for IP addresses on firewall. My IP address changes ...
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1answer
56 views

PF: Can't open port on OS X

Have troubles opening the port 9 on os x 10.10.3 yousemite using pf firewall. I want to do this for being able to get wake-on-lan packets to this port. I assume that for WoL to work the port (on the ...
2
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1answer
56 views

A secure, iptables rule-set for Ubuntu home router

I am using a Ubuntu 14.04 server machine as my primary home router and firewall. It has DNS, DHCP and uses iptables to secure everything up. Iptables also acts as a nat. On eth0 I have my incoming ...
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1answer
99 views

OS X Yosemite. How to block internet access for specific app? (AppStore for example)

How to block internet access for specific app (AppStore for example) in OS X Yosemite, via CLI or GUI?
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1answer
25 views

Chaining one router to another plus a switch

So I have a hardware firewall running OPNsense, a dumb switch, and a router. Could I run the output of the firewall through the switch, have the firewall do DHCP for those running off that, then ...
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88 views

Can I set up Windows 7 VPN so that only sites blocked in China are routed through VPN?

I'm in China behind the Great Firewall using a VPN service provided by a friend so didn't get blocked in the VPN crackdown in January 2015. Since VPN can slow down traffic a lot I'd like to only ...
2
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1answer
50 views

How does my computer's firewall work? Like inbound rule, outbound rule, reply?

So I understand how NAT works, but I don't understand how firewall works. With non-symmetric NAT, if someone sends me a packet, it gets blocked, but it I send someone a packet and they get that packet ...
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1answer
18 views

Can I inherit iptable rules on/under windows?

Don't really want to purchase a VPS just to test some iptables stuff for my gameserver. Was curious if it's possible to load up debian on vmware player and install nginx, nodejs, mysql, etc (which is ...