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

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2answers
36 views

Passing through a firewall with a “reverse” proxy

I have to do a workshop in a firewalled environment which is preventing me to show everything I would like and I'm looking for a workaround. I'll be demoing a software which runs on Windows. During ...
1
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1answer
37 views

Decide to allow or block internet access to applications [on hold]

I'm looking for a simple tool that everytime an application of any kind tries to access internet asks something like "Application.exe is trying to access internet" and lets me choose wheter to allow ...
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0answers
16 views

UDP over Internet

I have a small problem: I want to program a simple Apllication that sends a small word (in this case: "Hello") to a server. This Server should display it via cout. This is just a project to learn how ...
0
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1answer
14 views

How to white list some ip and all the rest block while having already a DMZ?

I have a Linux machine running which has local ip: 192.168.1.2 connected to a router with public IP 8.8.8.8, now the router 8.8.8.8 has DMZ to 192.168.1.2 As a result spammers, hackers, crackers ...
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0answers
17 views

Why do my nat iptables rules not work with marked packets?

System: debian squeeze, Linux server 2.6.32-5-amd64 #1 SMP Tue May 13 16:34:35 UTC 2014 x86_64 GNU/Linux, iptables v1.4.8 lsmod | grep iptable iptable_security 2176 0 iptable_mangle ...
1
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1answer
28 views

How can I make Ubuntu firewall rules ( ufw ) allow all traffic except…?

I'm new using Ubuntu and ufw command to set firewall rules. I have an apache service running and I'm able to deny the access to the root path using apache2.conf. I have another backend app running on ...
0
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1answer
8 views

Can't connect to SAMBA - ISP is blocking it

Security issues aside, I'd like to connect to a SAMBA share from home to a server (dedicated or vps, doesn't matter). The server works perfectly. The issue is on the client side. Let me more clear: ...
-3
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1answer
23 views

about CentOS 7 apps & Driver

im using pc for several years but never tried Linux so im quite noob in this field. im using Autodesk maya, Nuke & will learn houdini very soon. i found that linux works faster for this apps so ...
1
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1answer
16 views

Firewall Throughput vs. UTM Throughput

I want to buy a new rack-mountable router with wireless capabilities. I was checking out the (Netgear UTM-25S. This router has a "firewall throughput" of 980 Mbps but a "UTM throughput" of only 24 ...
3
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3answers
68 views
+100

Vyatta Firewall structure and Interface Direction

I've just purchased a Ubiquity EdgeRouter ER-8, and I'm working on configuring the firewall. In particular I'm confused about the direction "Local" for the interface I've defined as the WAN, and how I ...
0
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2answers
36 views

Prevent traffic to mac address using ebtables

I have an interface on a remote host: 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:05:68:02:68:dd brd ff:ff:ff:ff:ff:ff inet 192.168.3.1/24 ...
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0answers
17 views

How to get a log each time a packet is blocked by Windows7 firewall?

I would like to monitor if when sending a document to a printer, the Windows firewall enters in action. How to get a log each time a packet is blocked by the Windows integrated firewall? Some people ...
0
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0answers
36 views

Linux: Block all applications from accessing internet and whitelist some (Kubuntu 14.04)

How can you block all applications from accessing the internet in Kubuntu, and only whitelist some? (To prevent automatic updates, downloads (data plan), "calling home" and sending any log/usage ...
0
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0answers
10 views

Nessus Home not logging in

I have deleted and reinstalled Nessus for the 7th time now and I still cannot log in. Ive checked everything from my firewall and SSl certificates. When I try to login it only shows a spinning wheel ...
0
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0answers
14 views

Disable Fortitoken on a Fortigate Firewall

I made an error while configuring my admin account on the FortiGate 60d and enabled forti token for 2 step authentication. Thing is I enabled the wrong token and I do not have that device with me. Now ...
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0answers
14 views

Unable to connect server through winSCP and its giving access denied error

Even though by providing correct username and password it's not allowing to connect to server. I turned off firewalls also in server. But, still not able to access FTP connection. I also checked that, ...
1
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3answers
27 views

iptables catches on DENY but not on ACCEPT place prior to it in the chain

I have a weird problem with my iptables firewall: If I set two consecutive identical rules, the first is ACCEPT and the second is DENY, the incoming packet is denied (and logged as such). How is it ...
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0answers
6 views

equivalent of iptables rule in ip6tables

I m newbie in the iptables. I have the following iptables rules in the source code of a project iptables -t mangle -I PREROUTING ! -i br0 -p TCP --dport 45 -j MARK --set-mark 0x1000 iptables -t nat ...
0
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1answer
22 views

what the “!” means in the iptable rule

what the "!" means in the following iptable rule iptables -I inacc ! -i br0 -p UDP --dport 69 -j ACCEPT I think is related to the interface br0. I think it mean any interface except the br0 Am I ...
0
votes
1answer
13 views

MySQL: Port issues on an domain network setup

I am looking for options to have a MySQL server on corporate environment where opening a port in the Windows Firewall is quite difficult (a lot of red tape). At this point I am not looking to have a ...
0
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1answer
20 views

Connect a external SSH Server from blocked SSH Tunnel network

I need connect to SSH Server in my work office from a academic network, but in all tries occurred a "Timeout error". In my home and in other places the access work fine to connect (SSH Server working ...
1
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1answer
24 views

How to block docker-mapped ports with a firewall from outside the host without messing up docker routing inside the host?

I have a docker container running on a host with some port mapped to a port on the host. docker run -d -p 9009:9009 someserver I want this machine firewalled off from the internet except for 80, ...
0
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1answer
56 views

How do I stop my Mac from asking to accept incoming network connections?

I am using Syncthing, which is an application to sync files between two or more computers. I believe Syncthing (on github) needs to be allowed to Accept incoming network connections to work properly. ...
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0answers
48 views

Disabled firewall on a Asus router and now can't connect

I have an ASUS RT-N12 wireless router with WAN web access. A dummy of the router web interface can be found here. I had "Enable Web Access from WAN" on and was able to access the web interface via a ...
0
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0answers
34 views

Im trying to user docker to install cloud9 ide

Im trying to user docker to install cloud9 ide on my centos7 vm. Im using this docker image: https://github.com/kdelfour/cloud9-docker Ive set firewalld to set 80 and 8080 to public, ive tried ...
0
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1answer
31 views

Remotely accessing OSX machine behind firewall

I need some way to remotely access an OSX machine that sits behind a remote firewall (if it weren't for the firewall thing I could just ssh into it, but I have no control over the remote firewall to ...
0
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0answers
95 views

CS:GO SRCDS and iptables (firewall)

I have very strange problem. This morning I wanted download, install and host small server for CS:GO on my VPS. I used this tutorial: ...
0
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1answer
100 views

ipfw not available on Mac OS X yosemite?

I'm trying to use https://github.com/apenwarr/sshuttle on Mac OS X 10.10 yosemite. But sadly I couldn't find ipfw. Is there a way to install it or something?
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0answers
26 views

Opening outgoing ports on dedicated machine

I have a website where I have been working with another person on a game server listing site. It queries the game servers and shows information etc. Anyway upon talking to the creator of the script he ...
0
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2answers
46 views

Best way to secure RDP connections WITHOUT VPN?

We are needing to use RDP for a client, but the VPN and internet connection is just too flaky to use VPN anymore. VPN is NOT an option anymore for us. Currently the plan is to open a bunch of ports ...
2
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0answers
32 views

Configure firewalld to distinguish home and public ethernet connection

I connect my notebook via ethernet at home and outside. I want to open some ports for services like samba only at home and not somewhere else. How can i let firewalld automatically detect where i am, ...
3
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0answers
41 views

Intermittent connection and “Firewall Blocked” log entries on Cisco DPC3939B with firewall “disabled”

First, I apologize if this question seems to be "all over the place". I've tried to sum it up as clearly as I could, but there are a lot of moving parts, so I've tried to be detailed with my ...
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0answers
26 views

Sharepoint site and Excel files often prompting for login when accessed from corporate network

Since about one month ago a number of users have been experiencing problems accessing a Sharepoint 2010 system we have hosted externally. They are prompted to enter their login details when accessing ...
0
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0answers
79 views

Remove Avast Firewall NDIS Filter Miniport?

First of all, I would like to know what is Avast Firewall NDIS Filter Miniport(and what the hell it has to do with my pc even after uninstalling Avast IS). Then, How can I remove it from my pc? ...
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0answers
60 views

ZyXell ZyWall USG 100 - Port forwarding using router

I have the Zywall USG 100 and a ISP own router. I need to use the firewall but there is a problem: the ISP router "can't convert into a pure modem,". I can only deactivate DHCP and NAPT. And can't set ...
2
votes
2answers
26 views

Bridging Firewall to Public Wifi

My building offers wifi to its residents. It is not managed by IT professionals. I would like to use this internet source some of the time, but would like to be protected from machines on that ...
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0answers
13 views

BSD Packet Filter Redirect Internal traffic

I'm using OSX Yosemite with Packet Filter (BSD). Is there a way to redirect internal originating traffic (let's say from en1) to lo0 on a specific port for specific destinations? rdr from what I ...
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0answers
18 views

How to redirect traffic to a fixed IP address in Fwbuilder

I'm new to fwbuilder and I want to redirect all incoming wifi traffic to my web server. I tried many iptables command but I've failed so I came up to GUI firewall. Can anyone suggest how to do it?
0
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1answer
41 views

Block ICMP flood from a specific IP with pf

I'm getting a lot of ICMP throttle messages in my system.log: Apr 11 20:45:28 kernel[0]: Limiting icmp unreach response from 1054 to 250 packets per second Apr 11 20:45:29 kernel[0]: Limiting icmp ...
0
votes
1answer
56 views

KODI remote isn't working

I'm trying to correctly configure KORE, the official Kodi Remote app for Android, but I'm unable to do so. My copy of Kodi is installed on a laptop with openSUSE as a base system, and both it and my ...
0
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0answers
33 views

Find out why I cannot download from a specific site

I'm running Windows 8.1 SL trying to download the Desktop app from: http://www.systemrequirementslab.com/cyri However, when I get to the download page ...
0
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0answers
45 views

No internet access exclamation mark appears across LAN

I have some problems with my domain network. we have about 100 - 125 PC's in our office and they are connected to domain.we use windows server 2012 as a domain controller.most of the computers connect ...
1
vote
1answer
53 views

Synology ssh port receiving too many intrusion attacks, how to ban systematically?

I have a synology NAS which I leave at home, and leave it open so I can access it remotely from the office. One of the useful things to do is enable the ssh port so I can access it with my terminal. ...
0
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0answers
21 views

PF rule using return-rst on Mac OS X does not reply with TCP reset

I'm trying to add a simple PF rule: block return-rst out proto tcp from any to any port 33128 to filter all outgoing traffic to TCP port 33128, and I'd like it to respond with a reset. However, ...
0
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1answer
37 views

Port translation - how to scatter outbound traffic across random ports?

I would like to be able to PAT such that outbound traffic for a given destination port is translated to some random port within a range on a per-PDU or per-packet basis. The intention is that ...
0
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2answers
26 views

Repercussions of opening ports for applications on router

I know there's a security risk with forwarding ports on my router to a computer on my network for applications like teamspeak or minecraft. However, I haven't seen any clear explanations of what the ...
0
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0answers
14 views

FTP timeout to web host

Macbook pro 10.9.5 regular web host (cPanel) router firewall set to low machine firewall off proper login credentials Filezilla/Cyberduck Telnet to 198.252.106.222 21 does not connect FTP ...
0
votes
1answer
36 views

Can't open Minecraft Server for Internet

I followed all the steps for hosting a Minecraft Server: Allowing connection (inbound and outbound, TCP and UDP) to port 25565 on Windows Firewall. Forwarding ports on router configuration (TCP and ...
0
votes
1answer
110 views

How to block all traffic but one IP in windows firewall using command line

I have a project and for it I need to only allow connections in from a certain subnet, everything else must be dropped. The catch is that its all going to be automated, no user interaction, there for ...
0
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0answers
47 views

CentOS as home network router: IPTables Port Forwarding failure

I have currently set up a home server with a CentOS 6.6 installation on it. The server has two NIC interfaces which I'm using it as my router and DHCP server. Here's a diagram showing the network ...