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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 others to access my site? (It is REALLY simple; no graphics, CSS, etc.)

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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 B with ip 192.168.0.199 I want to access machine D from a machine C. What settings do I need to change to do that?

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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 C Class IP Addresses to all of their domains and mange as well as create some of the best services that are able to know where webmasters can control all their domains from one single cPanel.

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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 aliases eth0:0 and eth0:1. I think this is routing problem. auto lo iface lo inet loopback auto eth0 auto eth0:0 auto eth0:1 iface eth0 inet static address xx.xxx.xxx.16 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:0 inet static address xx.xxx.xxx.129 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:1 inet static address xx.xxx.xxx.130 netmask 255.255.255.128 gateway xx.xxx.xxx.1 Also, please tell me how to "reset" every changes that I made in networking and routing. Thank you

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  • iptables, allow access from certain MAC addresses

    - by user788171
    Presently, I limit which clients can access my server by using IP addresses via iptables, only approved IP addresses can connect. However, the problem with this is if a client is on a laptop and goes to a different location, they can no longer connect because the IP has changed. For a variety of reasons, iptables authentication is the only option I have. Is there a way to restrict access by device instead of ip address. For instance, only allow certain MAC address to connect to port 5000. Is it possible to do this via iptables? Note, the computers are not on the same network, they could be connecting from anywhere in the world.

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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 performance, whilst we manage the monitoring software. Find out more.

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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? I'm assuming this test would presume I know the target IP, but in a large network with many subnets, I'd have to test many different combinations of networks and see if I get success. Here is one example (ping): For each IP in the DMZ, arp for the host MAC Send a ICMP reply message to that host directed at an online host on each subnet I think that there is a more optimal way to get the information, namely from within ICMP/IP itself, but I'm not sure what low level bits to look for. I would also be interested if it's possible to determine the "router" status without knowing the subnets that the host may be connected to. This would be useful to know when improving our security posture.

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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 address as it should be. I would like Squid to take the incoming IP address the request was sourced to and proxy the request out on the same IP (e.g incoming 123.123.123.1:3128 - 123.123.123.1, .2 - .2, etc) and have set up these ACL rules in /etc/squid.conf acl ip1 myip x.x.x.1 tcp_outgoing_address x.x.x.1 ip1 acl ip2 myip x.x.x.2 tcp_outgoing_address x.x.x.2 ip2 acl ip3 myip x.x.x.3 tcp_outgoing_address x.x.x.3 ip3 and so on, as this seems to be the only way to do what I want (from research). However, after much frustration, Squid seems to be ignoring these rules and sending requests out on the default interface. Does anybody have any suggestions? Thanks.

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  • linux static ip problem

    - by out_sider
    I have a serve running centOS and I'd like to have the following setup: The server needs to have a static ip and be accessible by name. What I want is independently of the network being able to connect the server to the network and access it by name on Firefox as it will be running a web page. I tried setting the ip manually but while the inet addr is set as I want it the Bcast isn't. And I only can ping the server on the Bcast ip and because it is 192.168.2.255 ssh says it's not valid.

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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 192.168.1.1. Server A can ping server B at 192.168.1.2. Router C is able to route to 172.16.2.0/24 and 172.16.3.0/24. [10.0.1.0/24] | 172.16.2.0/24------| | [C]------172.16.1.0/24------[A]------192.168.1.0/24------[B] 172.16.3.0/24------| We have set MASQUERADE at eth0. When server B (192.168.1.2) connect to 10.0.1.0/24, IP MASQUERADE will happen at eth0. Can we set MASQUERADE at eth1? Is it okay to set MASQUERADE at more than 1 network interfaces in Linux?

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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 is 89.x.x.x. Is there any way to reach the IP 10.x.x.x from the Internet? Yeah I thought the same about IPv6 but it's still not accessible for me ;[

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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 address? How will it eventually find his physical address (NIC address)? (no ARP here, because that would involve a router at the edge of the network, which doesn't apply here). Am I wrong somewhere?

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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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  • Are there any tools for performing static analysis of Scala code?

    - by Roman Kagan
    Are there any tools for performing static analysis of Scala code, similar to FindBugs and PMD for Java or Splint for C/C++? I know that FindBugs works on the bytecode produced by compiling Java, so I'm curious as to how it would work on Scala. Google searches (as of 27 October 2009) reveal very little. Google searches (as of 01 February 2010) reveal this question.

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