Software that controls what connections can be made to and from a network.

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3
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2answers
5k views

How to disable SuSEfirewall2?

How can I disable SuSEfirewall2 from the shell (without yast)? We use OpenSuSE 12.3 I tried it: workdevel123:~ # systemctl disable SuSEfirewall2.service But I think this is not the solution: ...
0
votes
0answers
4 views

Server 2012 r2 — Opening firewall on remote Server Core machine for MMC (Comp. management) access

MCSA student here. I'm having some difficulty with this one. Same subnet and workgroup. Server 1 is a physical 2012 R2 server. Server 2 is a Server Core running as a VM on a workstation. As part of ...
1
vote
0answers
19 views

Two Sites, One Firewall, Two wireless bridge, One ADSL modem,Internet Sharing

I have two physically separate sites, Site A and Site B. Site A - connected two Side B via a Wireless Bridge Site A - Transparent Wireless bridge terminates into the switch of Site A Site A - Has a ...
0
votes
1answer
8 views

How might one version control Linux kernel firewall rules?

Our router is CentOS but we just use iptables to modify Linux kernel firewall rules. There is a script that's under version control which resets all the chains/rules, but in doing so drops all ...
3
votes
1answer
3k views

Allow access from outside network with dmz and iptables

I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns ...
0
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1answer
21 views

Has Kubuntu 15.10 been hacked?

Can someone tell me what this message means please? [system] Rejected send message, 10 matched rules; type="method_return", sender=":1.19" (uid=0 pid=1183 comm="/usr/sbin/dnsmasq --no-resolv ...
0
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0answers
14 views

Windows firewall slows down Virtual Box Host Only Network with named virtual hosts

I'm trying to port my development environment from linux to windows and experiencing problems with the windows firewall. I set up a VirtualBox machine with a host only network adapter and a static IP ...
-2
votes
1answer
38 views

I can ssh into server A from server B. But I cannot ssh into server B from server A

I have 2 servers in a data center. Server B is publicly accessible, as in, I can ssh into it. Server A is not. So to access Server A, I ssh into Server B. And then from there, I ssh into Server A. ...
-1
votes
1answer
22 views

Windows 10 net usage

How to stop Windows 10 apps like money, news from accessing internet? I have Norton Security, so I blocked internet to these apps through Norton Firewall page. Then if I open these apps, itsays "no ...
0
votes
2answers
18 views

NetBIOS packet probing (port 137). Does it come from the router?

For quite a while my machine's firewall has been detecting strange packets, seemingly coming from my router. I cannot explain this behavior. I suspect that somehow an attacker from the outside is ...
23
votes
8answers
193k views

How to bypass web URL filtering service to access blocked websites (proxy)

I'm using network, where services such as Gmail or any other e-mails, Google Drive, Dropbox, all social networks are blocked. Basically my goal is to access simply GMail, but I couldn't find any way ...
1
vote
0answers
17 views

OpenVPN fails on different port

I have an OpenVPN setup with a linux server and windows client in mode-server with tap and over UDP. Everything works with port 1194. But I want to change to port 500. On my firewall I forward port ...
-1
votes
0answers
15 views

FTP protocol Extremely slow on Windows 10. What could be causing this?

I am running 2 different devices (A pc and a laptop) both on the same network, both Windows 10. The laptop has standard transfering speeds on the FTP protocol. The PC has extremely slow transfer speed ...
0
votes
3answers
530 views

how do I block downloading data from a web domain, including by javascript code?

I am unhappy with google's javascript loading various BS from *.gstatic.com domain. I tried telling my firewall to block *.gstatic.com but apparently this only blocked loading webpages into the ...
1
vote
3answers
4k views

Blocking ads at the firewall level

Possible with the proper firewall rules or proxy setup? For example, when an ad loads, at the bottom you can usually see the domain it is loading itself from. I figure block the major ones in a proxy ...
4
votes
4answers
17k views

Windows 7 is blocking ports

I am trying to open port 80 and 3690 for HTTP and svnserve respectively (inbound for both). I have Windows Firewall off, and have tried temporarily disabling Mcafee VirusScan Enterprise, to no avail. ...
1
vote
0answers
217 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; ...
0
votes
1answer
4k views

tracert command is not working but able to access the same site through browsers

tracert [site name] is not working in cmd prompt. But the same site has been working in all of my browsers . Please find below output of command. I need to use this command in my batch file but there ...
6
votes
1answer
1k views

How did Google get on my Mac?

I am running a MacBook Pro, and have never installed Chrome, Google Earth, or anything blatantly Google. Just installed Little Snitch (are there no good free firewalls for Mac?) and see that CURL is ...
0
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0answers
4 views

iptables forward combined with bfifo doesnt work

I have 3 interfaces, 2 internal(wlan0,wlan01 )and 1 external (eth1) and i want to configure traffic from eth1 ,so i use iptables to send all outgoing traffic from the internal interfaces to eth1: So I ...
0
votes
1answer
5k views

How to open a port for all users: NSA 2400

I'm trying to open up port 8332 for all users behind my firewall but can only find instructions for doing so for a single IP address. How do I make sure all my users can use a specific port? I've ...
0
votes
1answer
21 views

Cannot set ports to listening even though they have been opened Windows/Ubuntu

Currently trying to set up a connection (using sockets) between my localPC (windows) and my VM (Ubuntu). They are both on the same subnet and can be pinged. Went into Windows features, advanced ...
0
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0answers
11 views

how to block subdomain from any domain with windows7?

There are a lot of crappy websites which install spyware or badware software with a common subdomain name. For example (don't try these URLs, they are dangerous): ...
0
votes
1answer
166 views

Firefox: Firefox Sync and Zscaler Firewall/Proxy not working

our network as been recently upgraded with the zsacler proxy solution. I was able to regain internet access by following that thread Firefox: This connection is untrusted + Behind corporate firewall. ...
0
votes
1answer
4k views

Firewall open ports for vSphere

I need to open ports on a firewall, so that a client could access his VM console through vCenter server's Web Client. I had a look at this page about port description, but I am a little confused. I ...
0
votes
2answers
13k views

How to open a specific port in Moutain Lion Firewall

I cant seem to find how to open a specific port in the ML firewall? I know you can give applications permisiion, but thats no good to me. Is there a way I can specify a specific port?
0
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0answers
16 views

Port forwarding in windows to device

Hi I'm trying to access remotely to the server of a device connected to Windows by Ethernet by port:80. I have already port forwarded that port to the PC and set the Firewall to allow access thru that ...
0
votes
0answers
7 views

set tun interface to visit the internet

I have a tun interface named tun0(10.0.1.1),and a physical interface named eth1(10.110.136.76) on my computer. I want to use the tun0 to visit the internet. Firstly, I create and set the tun like ...
0
votes
0answers
5 views

CSF - making outgoing 443 connections

I've installed CSF firewall on my linux, and I have set in my csf.conf: # Allow incoming TCP ports TCP_IN = "22,25,53,80,110,143,443,465,587,993,995" # Allow outgoing TCP ports TCP_OUT = ...
0
votes
1answer
9 views

Allow http request over specific port in iptables

I'm running Kodi with a web service for the remote control. The web server is listening to port 11734, however opening that port (UDP and TCP) doesn't seem to work. Once I accept all incoming traffic ...
0
votes
0answers
16 views

Add link to Kaspersky whitelist in order to unblock it?

This window appears every 10 seconds saying "Malicious link blocked". I believe that the link is secure. How could I add this link to Kaspersky whitelist in order to unblock it? Note: I'm using ...
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votes
0answers
18 views

OpenVPN bad source address from client

My problem is that I want to connect to a OpenVPN server on a Archlinux operating system behind a router with nat. The client is behind a firewall/nat too and has 192.168.178.100. The error i get is ...
0
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0answers
13 views

How to install Sophos on a Netgear ProSECURE UTM50? [on hold]

In reference to this post: I'm trying to figure out how one goes about 'jailbreaking' a Netgear ProSECURE UTM50 (now end of life.) I would like to install Sophos UTM Free on this device.
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votes
0answers
25 views

Windows Server 2012 Updates

I understand I'm supposed to allow http://.update.microsoft.com, https://.update.microsoft.com, http://download.windowsupdate.com on my windows firewall in order to get downloads to work, but my ...
0
votes
1answer
22 views

Can you install custom UTM software on pre-existing firewalls/UTMs?

I have a Netgear ProSecure UTM50 (the Netgear ProSecure line is end of life.) Is it possible to install something such as Sophos UTM/Untangle/etc. on it?
3
votes
2answers
11k views

Block websites to a certain IP range with mikrotik router

I have a MikroTik Router 951Ui-2HnD that connects my computers with the ISP. I want to block Youtube and Facebook but only in a few computers. I created a Layer7 Protocol with: Name : Denied Websites ...
0
votes
1answer
41 views

Cannot restart apache on Centos 7

I cannot restart HTTPD on Centos 7. When I try to run the command it shows this error below. How can I overcome this? -- -- Unit session-735.scope has begun starting up. Apr 12 15:33:01 ...
0
votes
1answer
34 views

iptables rule doesn't work for port 80

My VM has set some rules for access to a web server and a SSH. The server is running in the internal port 8080 en redirected using iptables to the port 80 with the command: iptables -t nat -A ...
0
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0answers
9 views

how many rules iptables or single chain support

I have multiple user (approx 800 users), I am developing IPTABLES firewall for MAC address based filtering. My Question is HOW MANY RULES CAN I ADD IN A SINGLE CHAIN AND HOW MANY RULES CAN HANDLE ...
0
votes
1answer
35 views

How to prevent incoming internet traffic without using a firewall?

I'm trying to set up a server listening on the intranet on 80 that can't connect to the internet (inbound or outbound). I've got the outbound part covered using editing of the routing table but I'm ...
0
votes
1answer
31 views

tcpdump: Does DNS traffic on eth0 indicate that VPN is improperly configured?

I ran tcpdump -ni eth0 port 53 and tcpdump -ni openvpn port 53, to see if DNS information was being routed through my normal internet connection or my OpenVPN service. I am running ...
1
vote
1answer
3k views

UDP blocked by Windows XP Firewall when sending to local machine

I work for a software development company but the issue doesn't seem to be programming-related. Here is my setup: Windows XP Professional with Service Pack 3, all updated Program that sends UDP ...
1
vote
1answer
47 views

What are these IANA IP addresses doing in my firewall settings?

I'm running a Raspberry Pi with Raspbian, which is connected to the WAN via a VPN service. I was monitoring my Ethernet network traffic eth0 using iftop to make sure the traffic goes through vpn ...
2
votes
1answer
3k views

How to allow windows store apps and the windows strore to pass the windows firewall

I use the windows 8 firewall and I wanted it more secure, so I block incoming and outgoing connection. Unfortunately I realized that the windows store did not work as well and all application from the ...
-1
votes
0answers
33 views

AVG firewall is blocking VirtualBox machine instance from accessing host's internet connection

I have VirtualBox machine instance which have bridged connection from the host, however my AVG's Firewall is keep blocking its connection, when i turn it off, VirtualBox machine instance can access to ...
5
votes
9answers
3k views

Force web address to go through HTTPS

At my work, http://twitter.com is blocked, but https://twitter is not. Is there any way to have all programs/browsers access this URL using the HTTPS protocol instead of HTTP? This specifically ...
0
votes
1answer
27 views

How to access an ssh server that can't accept incoming connections

The server is current running bitvise SSH (I can readily switch to another solution), it is behind a firewall that blocks incoming connections (I can't open it because of reasons). I have a computer ...
1
vote
0answers
54 views

Block Windows 10 P2P updates with a corporate firewall

I work for a small IT company that fix mostly Windows computers, and lately we have an huge issue with Windows 10 updates. When a new computer enters our network and starts downloading updates, it ...
0
votes
1answer
15 views

Should Java SE Binary be allowed to communicate with my private/public networks?

I downloaded the Elder Scrolls Online Tamriel Unlimited game on my pc and got a popup explaining that Java SE Binary wants to communicate with public and private networks. I am a noob. I don't know ...
0
votes
2answers
3k views

Testing a Firewall against outgoing UDP ports

I'm trying to test which outgoing ports are allowed through a firewall. At the moment I can do this for TCP by port scanning portquiz.net (which is a server with all TCP ports open) from inside ...