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• Why to Opt For Multiple Class C IP Addresses

  There are a great number of services in the online world. Most of these services include the best of Multiple Class C IP Addresses which are available with the webmaster at the best possible prices.

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• Windows 7 RDP Problem - connecting to external zone with computer names

  - by alex

  I recently installed Windows 7, all is well so far, apart from using RDP to access computers outside my domain. We use a datacenter, outside of our domain. I was using Windows Vista before (not sure if this is relevant) - I could RDP no problem to the machines (using their machine names - Web10 for example) I have changed my IP address to be…

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• What happens if a server never receives the RST packet?

  - by Rob

  Someone recently decided to show me a POC of a new Denial of Service method using SYN/TCP he's figured out. I thought it was complete nonsense, but after explaining to him about SYN-SYN/ACK-RST, he left me speechless. He told me "what if the server you're using to trick into sending the SYN/ACK packets can't receive the RST packet?" I have no…

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• Why Can't Computers Off My Network See the Site? [migrated]

  - by nmagerko

  Have just set up Apache, PHP, MySQL, etc. on my Ubuntu OS, and I was wondering why computers that are not on my network can not see the basic index.html that Apache uses as the default. I set up the static ip address for my computer, and I use 192.168.1.100 for computers to view the simple site. Is there something I am missing that will allow…

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• How to Opt For C Class IP Addresses

  There are a great number of SEO Hosting Services in the world today that are formulated with the intention of being able to create and develop winning strategies for their websites to rank well on the top search engines of the world. The need for SEO Hosting has come at a time when webmasters are seeking ways in which they can assign multiple…

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• Two routers network routing settings

  - by xiamx

  I have two routers, Router A is connected to the internet, and Router B is connected to the LAN port of Router A. Router A: 192.168.1.1 Subnet 255.255.255.0 Router B: IP leased from router A: 192.168.1.2 gateway 192.168.0.1 subnet 255.255.255.0 I have a machine C plugged to router A with ip 192.168.1.3 also a machine D plugged to router…

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• Routing / binding 128 to one server

  - by Andrew

  I have a Ubuntu server with 128 ip's (static external ips 86.xx.xx.16), and I want to crawl pages thru different ip's. The gateway is xx.xxx.xxx.1, the main ip is xx.xxx.xxx.16, and the other 128 ip's are xx.xxx.xxx.129/255. I tried this configuration in /etc/network/interfaces but I doesn't work. It work if I remove the gateway for the…

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• Blocking Users by IP

  SQL Server MVP Brian Kelley brings us a great new article that solves a problem that might help your security. In this short piece, we learn how we can use logon triggers to block users based on their IP address. New! SQL Monitor HostedStart monitoring your SQL Servers in under 5 minutes. Get clear insights into server…

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• Can a network interface be configured to have a default gateway for UDP packets?

  - by Vaibhav

  It is quite possible that my question may not make a lot of sense. I apologize, but I am not a networking guy, and that's my excuse. To elaborate, WikiPedia defines "Default Gateway" as a node on a "TCP/IP" network. And the way it works is that if a network interface is sending a packet to an IP address not present on its subnet, it…

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• How can I tell if a host is bridged and acting as a router

  - by makerofthings7

  I would like to scan my DMZ for hosts that are bridged between subnets and have routing enabled. Since I have everything from VMWare servers, to load balancers on the DMZ I'm unsure if every host is configured correctly. What IP, ICMP, or SNMP (etc) tricks can I use to poll the hosts and determine if the host is acting as a router?…

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• Squid 2.7.6 not honoring ACL rules

  - by peppery

  Hello there, I have a /24 block of IP addresses assigned to a single server that I have been attempting to install Squid on an Ubuntu server machine. All of the IP addresses are set up correctly (aliases of eth0) in /etc/networking and work as they should be, using cURL I can specify an interface and it goes out on the correct…

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• It is okay to set MASQUERADE at 2 network interfaces in a Linux server?

  - by Patrick L

  There is a Linux server with 3 network interfaces, eth0, eth1, eth2. IP forwarding has been turn on in this server. eth0 is connected to 10.0.1.0/24. Its IP is 10.0.1.1. eth1 is connected to 172.16.1.0/24. Its IP is 172.16.1.1. Server A can ping router C at 172.16.1.2. eth2 is connected to 192.168.1.0/24. Its IP is…

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• Connecting two IPs like an URL

  - by czesuaf

  I haven't found answer anywhere, so here comes the question. My ISP connected me to a router with thousands of other clients, so my public IP is the same as many others. And I want to make a small private server which can be accessible across whole web. So my home router shows me IP 10.x.x.x and actually my public IP…

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• How does communication between 2 computers in a single network happen?

  - by learner

  Lets say I and my friend connect our computers with a LAN cable. I ping my friend with his IP address. How does it work? Since we are in the same network, we don't even need IP addresses, do we? Isn't IP addressing only relevant in case of inter-network communication? What will the ping command do with his IP…

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• How to Use C Class IP Address Range

  Another very important thing that you have to remember is that your site should be able to feature in the very first page of a search engine or else it is of no use. This is how you can use C Class IP address Ranges.

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• NFS: Server says "authenticated mount request", but client sees "access denied"

  - by zigdon

  I have two machine, an NFS server (RHEL) and a client (Debian). The server has NFS set up, exporting a particular directory: server:~$ sudo /usr/sbin/rpcinfo -p localhost program vers proto port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp 910 status 100024 …

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• Centos IPTables configuration for external firewall

  - by user137974

  Current setup Centos which is a Web, Mail (Postfix,Dovecot), FTP Server and Gateway with public ip and private ip (for LAN Gateway). We are planning to implement external firewall box and bring the server to LAN Please guide on configuring IPTables... Unable to receive mail and outgoing mail stays in postfix…

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• Can access SSH but can't access cPanel web server

  - by Tom

  I've built a Cent OS 6.0 vps and then i've installed the latest cPanel/WHM. This isn't my first installation but i've noticed something weird especially that i've never used the 6.0 version.. when i tried to install cPanel, it didn't recognize wget so installed it, then cPanel said that Perl isn't installed,…

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• Flushing iptables broke my pipe, how can I save my instance?

  - by Niels

  I was setting up my iptables when I performed a iptables -F and my ssh pipe broke. This is the last output of my session: root@alfapaints:~# iptables -L Chain INPUT (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere …

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• Iptables Forwarding problem

  - by ankit

  Hi all, I had initally asked question about sertting up my linux box for natting for my home network and was given suggestions in the thread here. Did not want to clutter the old question so starting a new one here. based on the earlier suggestions, i have come up with the following rules ... …

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• NFS: Server says "authenticated mount request", but client sees "access denied"

  - by zigdon

  I have two machine, an NFS server (RHEL) and a client (Debian). The server has NFS set up, exporting a particular directory: server:~$ sudo /usr/sbin/rpcinfo -p localhost program vers proto port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp …

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• Segment register, IP register and memory addressing issue!

  - by Zia ur Rahman

  In the following text I asked two questions and I also described that what I know about these question so that you can understand my thinking. Your precious comments about the below text are required. Below is the Detail of 1ST Question As we know that if we have one mega byte memory then…

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• Experiences with (free) embedded TCP / IP stacks?

  - by Dan

  Does anyone have especially good (or bad) experiences with any of the following embedded TCP / IP stacks? uIP lwIP Bentham's TCP/IP Lean implementation The TCP/IP stack from this book My needs are for a solid, easy-to-port stack. Code size isn't terribly important, performance is…

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• How to limit TCP writes to particular size and then block untlil the data is read

  - by ustulation

  {Qt 4.7.0 , VS 2010} I have a Server written in Qt and a 3rd party client executable. Qt based server uses QTcpServer and QTcpSocket facilities (non-blocking). Going through the articles on TCP I understand the following: the original implementation of TCP mentioned the negotiable…

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• Openfiler The NFS server does not support MOUNT version 3 over TCP

  - by chrisling106

  Hi there, I no longer able to mount my Openfiler NAS after created a new RAID10 array (but dun think that has anything to do with the new RAID setup) from my ESXi box. The NFS server does not support MOUNT version 3 over TCP Any ideas, please?

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