The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (often called TCP/IP, although not all protocols use TCP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, ...

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14 views

ESXI Server Behind ASA5506-X Router, How to Permit VM's to Access Outside Internet?

I have an ESXI Server, It works fine attached to the DSL Modem in bridge mode, All the VM's work, BUT. When I move the esxi servers cat5e cable from DSL modem to a dedicated interface on the Cisco ...
1
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1answer
1k views

PPTP VPN - No internet access though the VPN

I am very new to the world of windows server I'm renting a VM in the USA for my web hosting(DC, DNS and Web host role) and I decided that I would install a VPN on it so I could re-route me ...
5
votes
3answers
14k views

How can I find out which server OS a particular site is running?

Is there a way to check which server OS a particular site is running. For example from linux command line. Maybe via telnet? But all I can get from "telnet www.google.com http" is: Trying ...
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0answers
23 views

Windows Server 2012 Internet speed very slow [on hold]

I have Windows Server 2012 on my VPS, lately I have experienced very slow RDP and VNC, tried TeamViewer but no luck. I thought it could be some hardware problem, but I tested speed (speedtest.net) and ...
0
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1answer
40 views

Cisco 2621XM Configuration with Comcast Business Modem

I have a Cisco 2620xm router that I have ran into trouble getting it to connect to a comcast modem/gateway for internet service. The router and modem used by Comcast is a DPC3... The interfaces on the ...
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votes
1answer
43 views

Why would a network resolve some sites and not resolve other sites?

Win 8.1, IE 11 I recently made some changes to my internal network and suddenly attempts to access Bing are giving an error. My network is: When I connect either wired or wireless to the wireless ...
0
votes
1answer
18 views

No internet connection via my OpenVPN server (solved)

I have OpenVPN up and running on my server. I want all traffic from my clients to be routed trough the VPN server. The client connects just fine but is unable to connect to the internet. Server ...
0
votes
0answers
16 views

How do i make my web browser choose local virtual host over a site on internet [closed]

I have different virtual hosts on my local machine i added them into /etc/hosts by ip 127.0.0.1 They were working fine but today when i try to access one browser was keeping connecting to internet ...
0
votes
0answers
5 views

Connect a redhat server that is under a vpn to internet

I have to configure the environments of like 10 redhat servers(dbs, stash, test, dev, production), but those servers are under a VPN and they have no internet access, I can connect my company mac to ...
0
votes
2answers
5k views

Connect with internet in VMware Workstation

I am using VMware Workstation 7.0.0. I'm not able to set up the network connection between Host OS (Windows 7 Ultimate) and Guest OS (Windows XP Service Pack 2) to connect Host OS with the internet ...
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votes
0answers
30 views

How can I make an internal server access internet through a local PC?

I have a Ubuntu PC (10.10.3.3) which has access to a Fedora server (10.10.2.210) within the same LAN and to internet through another server (with internal and public IPs). The Fedora server has no ...
0
votes
2answers
17k views

Can't ping or reach external IP or domain on CentOS 6.3?

I have installed fresh CentOS 6.3 on my machine. Internet is not working at all. How ever I can ping my router and other computers connected on LAN. I've googled and searched various forums but all in ...
10
votes
14answers
39k views

How to securely join two networks together over the Internet?

Let's say there are two locations. Both locations have their own fast Internet connections. How do you join these two networks together such that every computer can see every other computer? Do you ...
1
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1answer
11k views

OpenVPN connected but not internet access on the client

I've setup OpenVPN following this tutorial, and everything works fine except that I don't have an internet connection on the client while connected to VPN. ...
4
votes
1answer
20k views

How are cellphone IP addresses assigned?

When my cellphone accesses a website via the tower and its GPRS gateway, NAT ensures that the sites receive a public IP. Would all phones using a single tower have the same IP? If yes, then how can ...
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votes
0answers
19 views

How to keep CentOS from losing its internet connection in a VMWare Fusion 7 VM? [closed]

I've been testing an install script on multiple OS's. So far: Yosemite, Mavericks, Ubuntu, and now CentOS 7. I'm using a trial version of VMWare Fusion 7 Pro. I didn't have any issues with the ...
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votes
0answers
11 views

Sharing an internet connection with 3rd party DHCP server on Windows (other than default ICS) [on hold]

I am writing a script that would install software packages on 150+ devices that runs Open-wrt Linux. I will be running software installation scripts on 8 devices at a time via ssh. Since I do not have ...
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votes
3answers
31 views

Manage/Limit Internet Bandwidth on Specific Wireless Network [closed]

I offer wireless internet to my tenant and the problem I have is we are constantly hitting the cap for the monthly internet usage. What I ideally would like to do is create 2 wireless networks: one ...
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votes
1answer
40 views

No Internet on router with pfSense [closed]

Sorry in advance if a similar question has already been posted. I am with Sky for broadband and have a router providing DSL connectivity. I have a cheap 64 bit desktop PC running pFsense as a ...
0
votes
0answers
4 views

Why does my firefox send TCP packets even when idle? [migrated]

I run firefox on Debian. I've disabled all mumboo-jumboo healthy and crash report tracking. There is no TCP connection to any website, I leave firefox oppen at the 'create new tab' When I turn off ...
0
votes
0answers
22 views

Gateway to internet on CentOS 6

I have 2 CentOS 6 linux servers say hostnames cent001 and cent002 cent001 has 2 Nic's 1 Bridged and 1 Nat cent001 is able to ping google server 8.8.8.8 with the help of bridged NIC cent002 has only ...
10
votes
2answers
282 views

DNSChanger Malware / Rogue DNS - “Internet Doomsday” July 9

Back in late 2011 the FBI dismantled a large and sophisticated internet fraud ring behind the DNSChanger virus/malware. Part of this malware involved directing victim's DNS requests to rogue servers ...
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2answers
3k views

Ubuntu cannot access internet, LAN is fine

I have an Ubuntu 8.04 LTS server that is directly connected to our Comcast Business Gateway modem and I have configured it with 1 of our 5 allotted Static IPs. My other machines on our LAN can ...
1
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1answer
56 views

Incoming SSH works, but all outgoing fails

Terminology I have a server (I'll refer to it as S1 ) running in the cloud, but it is misbehaving. I also have another server (S2) running in the same cloud network, connected to S1 through a ...
1
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1answer
72 views

Minimizing attack surface on fresh 2012 R2

I'm in the following situation, i will have a fresh server connected to the internet (if required with a firewall between the net and it simply droping all packets on ports other than the one my ...
14
votes
12answers
27k views

Will a higher bandwidth Internet connection lower ping response time?

It sounds obvious that a faster connection lowers latency... But I wonder: I am working remotely on a host the other side of the world - light can only travel so fast (1 foot in a nano second) and we ...
0
votes
1answer
27 views

Caching UDP packets with iptables

I have a server set up to forward all of its packets on a certain port to another host with the following command; iptables -t nat -A PREROUTING -p udp --dport PORT -j DNAT --to-destination IP:PORT ...
9
votes
2answers
4k views

How IP addresses are mapped to Autonomous System Numbers?

How are IP addresses mapped to Autonomous System Numbers (ASNs)? Is there a reference database for it? Then how are these Autonomous Systems geographically located?
3
votes
4answers
7k views

Can I merge two broadband Internet connections into one? [closed]

I would like to merge 2 identical Internet connections into one. I have two 512 connections and would like to combine them to create a single 1 M BPS connection. I hope you can help.
1
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0answers
62 views

Postgres streaming replication over Internet

all: I want to set up two PostgreSQL servers, one as master server and the other one as a hot standy, using streaming replication. I have done this before in LAN environments, but I would like to ...
0
votes
0answers
55 views

Self Signed Certificate for RDP over Internet - Why Not?

I was recently informed on SF that using a self-signed certificate for RDP over a public interface is not recommended. In this particular scenario, I'd like to understand more about why. The ...
1
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4answers
4k views

How to throttle your own internet connection?

I am writing a website and want to test it's speed on slower internet connections. I have the unfortunate first world problem of downloading at 100mbps, how can I throttle my own computer's internet ...
2
votes
0answers
23 views

How fast should internet speed be to host a webserver? [duplicate]

We host our own linux webserver in house. The company's Internet connection speed is 100MB, and the server runs no problem with it. We are planning to have another webserver located in another place, ...
0
votes
1answer
38 views

Troubleshooting poor point to point (over internet) bandwidth between two machines

My problem started out as poor bandwidth between a 64 bit Win 7 Home OpenVPN server in location A (Northern Europe) and a Win 7 or Linux Client in location B (Southern Europe). Location A has FTTC ...
14
votes
7answers
27k views

How to tell if it's your problem or your ISP's problem

I originally titled this "how to tell if your internet is down or your network is just screwed up" and Jeff's AI said that this questioned would probably be closed. Nevertheless, someone here is ...
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2answers
137 views

How to check Internet bandwidth in Ubuntu? [closed]

Instead of going to sites like http://speedtest.net , or others, I want to check my current Internet speed from the terminal on Ubuntu. How can I do it?
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votes
1answer
85 views

Make squid (or tinyproxy) return cache EVERYTHING and return hits on Internet outage

I am wondering how to configure squid (or tinyproxy) to cache EVERYTHING and return HTTP 200 hits, even on Internet outage or if original source is 404? Basically, I want squid to look in the cache ...
1
vote
0answers
81 views

Can iSCSI and Internet work on same NIC? [closed]

I have a Synology RS815+ that supports iSCSI with 4 GbE ports. I have two Mac Mini's (2014) with built-in GbE and a TB to GbE adapter. All 8 connections are tied to the same switch, with client ...
1
vote
1answer
21 views

How to show the contents of a lan server through another internet-connected

I need some help. We have 2 servers (centos and ubuntu). 10.0.0.1 and 10.0.0.2. On 10.0.0.1 We have our intranet services (web applications) (10.0.0.1/sis1, 10.0.0.1/sis2...) On 10.0.0.2 We have ...
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votes
1answer
37 views

Measure traffic of streaming audio/video in whole office

I would like to measure the different traffic used in our office, specifically streaming of audio and video. I'm trying to assess whether there is any affect of people using streaming on our internet ...
0
votes
1answer
52 views

How can I adapt this technique of using a proxy (in firefox) to wget and yum ? [closed]

I work in a large organization where some people have extremely restricted internet access and some are given a fairly large amount of freedom. The way my organization manages this is by running a ...
6
votes
10answers
498 views

How to browse safely from a public internet computer?

I was reading this question when I thought: Some emergencies requires that you log on in e-mail or another sensitive sites in public internet computers. Remember that points: You cannot install ...
18
votes
6answers
810 views

Why do Facebook users sometimes end up on my site when they enter www.facebook.com in their browser?

Every few weeks I get an email (usually a very unpleasant one) or sometimes even a phone call from a Facebook user who believes that I am "hacking" their internet. They come to this conclusion after ...
5
votes
4answers
2k views

What's so special about leased lines (T1, DS3, etc)

I understand the theory of having "dedicated bandwidth" but why would a small/medium business purchase a leased line for access to the internet? In today's day and age residential grade connections ...
0
votes
5answers
136 views

Suggestion for software to control internet [closed]

I need to implement a gateway that will allow me to control the access to the internet of a network made up of a about half a dozen of workstations. My main obejectives are the following: 1- ...
0
votes
1answer
3k views

Assigning a public IP on Windows Server 2008 R2

We've recently acquired a Dell PowerEdge r420 server (2 NICs). After installing the OS (Windows Server 2008 R2), we've installed SQL Server 2008 and IIS. Now we have a public IP given to us by the ...
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votes
3answers
38 views

Is there a way I can find all domain names that have a CNAME with a given value?

Is there a tool using which I can run a query that returns all domain names that have a CNAME with a given value (e.g. something.example.com)?
0
votes
1answer
133 views

Windows Server 2008 is connected to network but Internet Explorer can't browse

I'm creating a Virtual Machine using Hyper-V with Windows Server 2008. The VM is ok, I can connect all my network and I can ping any address with success. But when I try to browse using the default ...
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2answers
254 views
0
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2answers
76 views

Individuals able to hit our bandwidth cap… Only a recent phenomenon?

We have a 10Mbps (synchronous) connection with our ISP. Recently we have discovered that if a single user is watching Netflix, or if I run Windows Update on a PC, we will totally saturate that 10Mbps ...