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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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, ...
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152 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 ...
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18 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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1answer
741 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 ...
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1answer
10k 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. ...
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1answer
85 views

Deploying Ruby Applications In Air Gap (No Internet Access) Network

The current network setup at my job has made it difficult to deploy Ruby web applications. We are running our production RHEL servers in an air gap network with no access to the public internet. My ...
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1answer
108 views

Microwave Link Latency

An internet provider installed us a microwave link: The issue is that: The ping from our side to the gateway is about 1-2 ms, which is great, but it remains like this for only 12 hours, then it ...
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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 ...
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1answer
117 views

Can not access tomcat's default page

I am quite new to Tomcat. I use win XP. I have installed Tomcat 7.0.3, started it. I have started a browser, go to localhost:8080 and I can see the congratulations page, saying that tomcat is ...
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1answer
730 views

netstat -e: high discards and errors

I think my network is congested because of the relatively large discards and errors data. They should be zero or at least close to that. Here is the output of netstat -e on my computer: Interface ...
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1answer
178 views

Setting up VPN on win2k3

Recently moved local server to a datacenter. It is used for small file storage, database and thats about it. I am trying to setup VPN there, which I have never done. I tried setting it up while ...
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1answer
298 views

how to access my lan based postgresql db from my website

We have lan based .Net application with Postgresql 8.1 , now i have task to provide interface on website to read and write two tables on LAN based database I don't know where to start Please help me ...
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302 views

Is it possible to separate Routing/NAT in conjunction with an internal DNSMasq host providing DNS/DHCP?

It's really great letting DNSMasq take care of DHCP / DNS, as it "just knows" everything... as it should, considering it dished out the addresses to the hosts... However, it seems (to me) - ...
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1answer
257 views

Modem with support for wired 802.1x

I'm looking at allowing internet access for only a few scattered users on a school network. One method I'm considering is using 802.1x authentication for the modem. Of course there are simpler options ...
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1answer
603 views

filtering request from IIS and redirecting it to Glassfish

I have IIS running on my server on 80 i want if request with /webapplication comes then the request should be redirected to my glassfish from IIS it self glassfish is running on 8080 how to configure ...
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1answer
199 views

Turnkeylinux lampp guest doesn't have internet connection

I've set up a turnkeylinux lampp server in virtualbox with two network bridged connections, one for when I'm plugged in to my router, and one for when I'm using a wireless connection. This allowed me ...
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1answer
23 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 ...
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1answer
36 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 ...
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1answer
97 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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1answer
73 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. ...
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1answer
603 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, ...
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1answer
469 views

HP MSR 30-10a Router - Route Traffic over Default Route

We have a brand new HP MSR 30-10a Router. We have a fairly simple routing situation - we have two IP blocks, one which has a route out. We need things on the first block to go through the router, and ...
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1answer
102 views

I can't access some domains from one of my three internet providers. How to troubleshoot?

I have three internet providers at my office: Telepacific (3/3Mbps), SkyRiver (12/12Mbps), and Verizon FiOS (75/35Mbps). (The reasons for three connections are outside the scope of this issue.) I have ...
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1answer
848 views

MikroTik RouterOS 5.18 Does not connect to internet after restart

I am setting up a RouterOS on an x86 machine. The router is configure and is connected to internet via PPPoE internet connection. I am distributing it to 5 PCs and a Router via RouterOS PC. The setup ...
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1answer
348 views

Ports to open in firewall in case of clients getting to a proxy

I have an internal network inside my LAN. The clients are connected via router to the main LAN. In the main LAN there is a connection to internet. I set up a proxy in the main LAN and connected the ...
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1answer
65 views

Port Mapping in Windows Server

I have Windows Server 2003 and in WS virtual machine with Ubuntu server. Network: On host I have eth0 with real IP, virtual eth (192.168.0.1 - virtualbox interface), it's working in bridge mode with ...
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1answer
146 views

ISA Net connection goes down periodically

Thanks for taking the time to help out. I have been working at the IT Dept of a company for the past 6 months, thus there are a lot of things I don't know and am not sure about. Yet I can verify/seek ...
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1answer
103 views

Hosted (external firewalled) ASP.Net application to customer LDAP

Situation: I manage a hosted ASP.Net application that employs winform authentication. The application has role based security, and access control list to various assets. Multiple customer use the same ...
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votes
1answer
211 views

How to connect to a server via wifi device using a dialer(vpn)?

Question: How to connect to a server via Wifi device using a dialer? Description: I have a dialer that I use to connect to my cable network server in order to access the internet. I connect using ...
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0answers
408 views

Freebsd change default Internet channel route

I have two Internet channel and Gateway on freebsd. When I switch channel with the command route change default chan2, the command netstat -nr shows changed default route. But traceroute shows that ...
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0answers
175 views

I am not able to connect to my server from my leased line internet connection

I am having some troubles connecting to my Fedora server from my static IP ISP connection. Usually I can ping that server with no problems. But other times it just gives me timeout responses. When ...
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0answers
43 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 ...
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70 views

Exchange have disconnection Issue while using behind TMG 2010

We have two branch office but not VPN (Data Circuit) between them. We are using Exchange facility from another branch but we are having disconnection / slow issue as already set TMG alerts. Outlook ...
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48 views

Cisco configuration for public library internet

I'm a C/C++ computer programmer turned IT support guy working for a public library. My day is usually spent helping random grandparents learn how to use email, so my networking knowledge is limited ...
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288 views

Conigure Linux server to do lawful interception

I have a server that makes the routing for my LAN (Linux, CentOS). I would like to have on it the possibility of lawful interception: I want to be able to see all network traffic that was done from my ...
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1k views

OpenVPN enable split tunneling, client to overload over their own Internet connection

I am trying to enable split tunneling with my VPN network. I am using OpenVPN to host my VPN network and have follwed the steps to get split tunneling working however my clients still get the: 0.0.0.0 ...
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33 views

What could cause a group of machines to fail loading secure web pages only when assigned certain IP addresses?

I have about 20 cloned machines running Windows XP Pro SP3. Three of the computers are experiencing an issue where clicking the 'Proceed to checkout' button from the amazon.com shopping cart causes ...
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0answers
95 views

Add site to Internet Explorer Security Zone in GP without deleting all other settings

What I have figured out is this: GP: User Configuration -> Administrative Templates -> Internet Explorer -> Internet Control Panel -> Site to Zone Assignment list. If I enable it, and add a site ...
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0answers
17 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 ...
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0answers
23 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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41 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 ...
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0answers
73 views

Internet lost after 10 minutes of connecting Open ERP server

So basically I have an open-ERP server connected to a router so that i can access it from home through internet. the network structure is like this: Etisalat internet box->cable->router(lynksis ...
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0answers
47 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 ...
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0answers
77 views

openVPN on another IP

I had a working OpenVPN on my server, and it was working fine, redirecting traffic to the/from the internet, but when i have found that the traffic to the services on this server not routing through ...
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votes
0answers
146 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 ...
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0answers
47 views

Source ip based Anycast-BGP?

I'm just getting interested in networking so don't be too harsh on me :) Ideal: 2 servers with shared ip; ip X Client 1 pings ip X > always server A Client 2 pings ip X > always server B ...
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991 views

Squid proxy log shows warings

I am seeing these errors in my squid logs and I wonder if it is that my configuration is incorrect. Apr 14 06:11:53 proxy squid[3901]: WARNING: Unsupported or unconfigured/inactive proxy-auth scheme, ...
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436 views

Connecting internet uplink to switch or firewall

While I am using Cisco kit, this isn't really Cisco related, more general network design. In the past I have connected internet connections straight in to a layer 3 core switch, 3750X's, 6509's and ...
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164 views

Debian on VM has web access but can't be pinged

I have just installed Debian on a Virtual Machine. I have internet access on the VM and installed SSH. I then did a ifconfig and discovered that the IP address is 10.0.2.15 which is strange as the ...
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546 views

CentOS - Increasing Users Download & Upload Speeds

I have has some clients report that their download speed from my web and ftp servers max out at 4.5Mbps for them, to me thats awesome, but now i am wondering why it stop at 4.5. The services are ...