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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0answers
197 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
143 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 ...
2
votes
0answers
24 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
71 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 ...
0
votes
2answers
718 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?
-1
votes
1answer
257 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
102 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
55 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 ...
-1
votes
1answer
70 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 ...
-2
votes
3answers
41 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
365 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 ...
0
votes
2answers
152 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 ...
-1
votes
2answers
436 views

Reaching Local Network which is under NAT with no public IP

I have a place called (lets say) REMOTE. REMOTE is connected to the Internet using 3G/4G Modem + Router. Unfortunately my mobile Internet provider does not give me public IP address. In REMOTE I have ...
1
vote
4answers
1k views

Communicating via separate network cards

Assume you have a web server with two network cards (and their associated ports), let's call them A and B. The idea is to connect one port (A) to the internet and the other (B) to some isolated ...
0
votes
1answer
313 views

Server 2003: DNS seem to only resolve google.com but no other website

I have a windows 2003 server running AD, DHCP, DNS and RRAS. I had to remove and re-install AD and DNS last week, after the installation, everything seem to work find except for browsing websites. ...
-2
votes
3answers
53 views

How do I know the type of connection from the IP Address? [closed]

The website GameFAQs uses the IP Address to know the type of connection and decide the level of a new user. See image: http://i.imgur.com/ZfJK8JH.png How does it determine the type of connection ...
0
votes
1answer
104 views

How can identify and quantify physical plant (network capacity) in my local area? [closed]

I am interested in identifying physical plant and network capacity in my local area, which happens to be Boston, but could be anywhere. For example, I understand that in Boston there is something ...
0
votes
1answer
23 views

Internet browsing issue for all network users in different timings [closed]

I have a WatchGuard Firebox that I've recently configured. All of the policies look fine and all appropriate services seem to be working correctly. However, we are facing browsing issue suddenly ...
2
votes
2answers
1k views

NAT a single IP using 2nd WAN Internet

I have a mikrotik RB750 (6.22) acting as a gateway for my LAN. Here is the basic configuration: Ether1-WAN1 (1.1.1.10/24) IPs are hidden for privacy Ether2-WAN2 (2.2.2.20/24) Ether5-LAN (192.168.1.1/...
3
votes
1answer
160 views

Somebody created subdomain without my knowledge. How? [duplicate]

Got an interesting email from CIRA today with: CE14-12545 [Malware hosted on ygglhalayvtwy.khabarov[.]ca] URL: http://ygglhalayvtwy.khabarov[.]ca/xnor/orladjaup.jpg IP: 204[.]44[.]87[.]184 MD5: ...
0
votes
1answer
199 views

Windows 2003 R2 traffic shaping & QOS

In our small office a LAN is connected to a modem router that will VDSL to the Internet. As a Windows 2003 R2 server exists in the LAN, I was wondering if is there a way to use this server as a router,...
-1
votes
1answer
128 views

Prevent internet from being monopolized by one user

In our company, there is a training room which contains 15 computers. Our employees (or external individuals) can follow a training there using these computers. However, we want to prevent the ...
-3
votes
1answer
224 views

Idrac 6 internet settings enabled to connect to internet via ssh [closed]

I just installed the idrac 6 enterprise into dell r410. I insert the cable on it. But there is no connection. Green light on !! Normally when i restart the server and when I use the normal connection ...
0
votes
0answers
52 views

Can poor Internet connection affect the IO read on my server?

I'm trying to spot the culprit causing too much IO read in my server. Issuing IOTOP -ao I have come accross many httpd processes among which one caught my attention: PRIO USER DISK READ ...
-1
votes
2answers
548 views

Restricting internet access of some client systems of LAN to a few websites using gateway

How to limit internet access of most systems in my LAN to a few websites and block all the other websites? Also want to bypass that restrictions for some systems. All systems have static IP address ...
0
votes
1answer
63 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 ...
-2
votes
1answer
47 views

DNS settings on computers and switches [duplicate]

Noob questions. I have static IPs on many of my Windows computers in our Windows 2008 domain. In the network settings at each, I have an a static IP and subnet. The default Gateway is set to our ...
0
votes
0answers
218 views

Internet drops out randomly for short periods of time (LAN issue)

I run a network (I'm just a math teacher) at my school. We get random 10 or so minute periods (I'd guess three a day on average) where the Internet is not accessible from within the LAN. If I go to ...
0
votes
1answer
153 views

Connectivity problems on website

We've been experiencing some connectivity problems on http://www.scirra.com. Running a DNS check: http://dnscheck.pingdom.com/?domain=www.scirra.com We're getting some errors: Delegation not ...
-1
votes
1answer
84 views

Geo distributed ip [duplicate]

When i ping 8.8.8.8 from my home computer (europe) i get around 26 ms latency. When i ping 8.8.8.8 from a server(US) i get around 1 ms latency. When i ping my (US) server from home (europe) i have 130 ...
0
votes
2answers
317 views

Best way to connect the network to the internet?

I'm setting up a small network for an air cadet squadron I help to run. We've just moved into a brand new HQ which is kitted up with ethernet ports throughout the building so I thought I may as well ...
0
votes
1answer
2k views

Windows Server 2003 not connecting to Internet

My Windows Server 2003 has two NICs, one for LAN and the other for dedicated Internet access. Suddenly, the Internet connection stopped working. It can ping itself and the hosts on the LAN. However, ...
2
votes
3answers
2k views

make program installs via ssh tunelling on CentOs system

I have a Machine A with no access to internet. I have a Machine B with access to internet. A & B can connect to each other via ssh. I'd like to make some program installs on A (perl, R package ...
2
votes
1answer
170 views

How can I host multiple websites from the same Windows 2008R2 server?

server running Windows Server 2008 R2 with two NICs and running IIS two Internet connections we can only get one IP address on each Internet connection. two routers we want to serve two websites, one ...
20
votes
3answers
2k views

how to secure an open PostgreSQL port

So, this is the situation. It seems we need to have an open TCP port 5432 to the world, where a customer has access to his PostgreSQL database. For obvious reasons, we can't say just "no", only as a ...
-1
votes
1answer
112 views

DirectAccess Setup on a Home ISP [closed]

I have a home office and I would like to setup DirectAccess from WS2012R2 for the client so their laptops are always able to VPN and connect home to access files and more. From the ISP side I've ...
-2
votes
1answer
3k views

How configure 2 Lan cards in Windows 7/8 pc one to connect to Internet and other to Local Network [closed]

    I am about to install a dedicated VOIP server in our office. It is a 3CX pbx system on Windows 7/8 machine. The environment currently is a Windows SBS 2011 with 8 client machines. I want ...
0
votes
1answer
82 views

How reliable is network error data from mobile devices?

We just started using New Relic mobile for our iOS app and have been seeing intermittent spikes in network errors. The list of errors contains some self explanatory ones (not connected to internet, ...
1
vote
1answer
43 views

Restict Internet Connection Except using Proxy

Given (as-is) A router with DHCP enabled An Active Directory Server Two Windows 7 clients joined the domain Planning (to-be) A proxy server Two clients are set to restrict internet connection ...
1
vote
1answer
284 views

Windows SBS 2011 Clients Randomly Unable to Access .co.uk Domains

We are a small office with 10 client PCs and one Windows SBS 2011 server acting as Domain Controller and Internet gateway. At random times client computers cannot access Internet hosts in the .co.uk ...
2
votes
2answers
2k views

Troubleshooting High TCP Retransmit Rate

I've been attempting to troubleshoot a network issue that presents with very high rate of TCP retransmits. 36 samples (taken with Wireshark 1.10.8 running on 32-bit Windows 7) totaling a little over ...
2
votes
1answer
179 views

Production servers can suddenly not access the internet anymore

Problem All Production Servers were suddenly not able to access the internet anymore, while four other Servers connected to the same VLAN and same eth0 settings can. Figure 1: System 1 represents ...
27
votes
3answers
2k views

Is it safe to reboot a server open to the internet?

Specifically I have an iptables ruleset defined on a server running CentOS. Am I guaranteed / can I guarantee / how can I guarantee that when networking comes online (either at machine boot, or after ...
2
votes
1answer
52 views

Website failover across internet connections

Requirement For a network having 4 static IP internet leased line connections linked to hosting a website. What are the current strategies one can apply to ensure high availability in case of ...
-1
votes
2answers
86 views

What is this router's IP address(es)? [closed]

What is the IP address(es) of the router in my picture? In my picture, you can see that I have question marks next to the router's interfaces, because I'm not sure if those are right. Can someone ...
0
votes
2answers
74 views

Do orgs that own IP blocks even use all (or most) of it? [closed]

I recently learned that the IANA assigns blocks of IP addresses to certain entities, usually commercial and government organizations. Here is a link to the assignments: http://www.iana.org/...
1
vote
2answers
6k views

How can I change metric of public network in route table

In my windows 8.1 ENT [64 bit] machine I have 3 network adapters. Ethernet 1 is connected to public network and other 2 ethernet adaptors are connected to different internal networks. The problem is ...
2
votes
1answer
7k views

How to Configure Source NAT (Private IP => Public IP Outbound)

I'm running VMWare ESXi Free and have Zentyal SBS 3.2 running as a Gateway. I have 5 Public IPS (CIDR/29, let's call them 69.1.1.1 - 69.1.1.5) and currently Zentyal is bound to 69.1.1.1 as the ...
-1
votes
1answer
155 views

DNS hierarchy with bind [closed]

I'm doing a project from class in which I want to simulate a dns hierarchy that works as the global internet dns hierarchy. The structure is like this: Hierarchy So all the requests will be sent to ...
4
votes
1answer
400 views

Delay from Google URLs & Services

At work, we've had a persistent issue with slow response times from Google based URLs via our Comcast internet service. Any time we try to load Google.com, YouTube.com, Drive.Google.com, ajax....