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  • how to separate a network for traffic

    - by Student_CVO
    At the moment our all computers in one big LAN, it is the intention to separate the admin and edu (it's in a school) especially for traffic and less for security. How do this best? I have a drawing, but can't post it (a can send it in a mail) Firewall?, VLAN?, IPCop (no two green zones)?, pfsense? ... Should there be two scopes on the dhcp server (WIN 2008 R2), one for admin and one for edu or is one scope enough? I would like your advice, I am a student in training with this task as a project. Thanks

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  • ARP replies contain wrong MAC address

    - by Jayen
    I've got a robot running linux with wired and wireless adapters. When I boot up, it connects to the wireless fine. When I assign an IP to the wired (either statically or with DHCP), it looks like it works. As in, ifconfig shows a proper IP and route shows proper routes. However, when I do an ARP request of the wired IP, the ARP reply contains the wireless MAC. ??? There's no bridge running on the robot, so why don't I get the wired MAC??? When the wire is disconnected, the wired IP replies to ping... Why is the robot replying over the wireless interface to IP requests on the wired???

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  • Best way to split LAN computers on two WANs (not load balancing)

    - by lpfavreau
    What is the best way to split the computers of a LAN (about 50 computers) to go on two WANs, depending on the computers' IP address or computers' configuration (gateway). I'm not looking for load-balancing, I need to be able to route which computer uses which Internet connection. A solution would be to rewire the old office to split the two distinct groups that need to use two different Internet connections but I'm not sure it's worth it at the moment. I have a pfSense router configured with the LAN (DHCP), WAN1 and WAN2. I also have the IP addresses (and ability to configure) the next router on WAN1 and the one on WAN2. What would you suggest? Routing based on IP addresses ranges? Different gateways? VLANs would be difficult for the same reason as to why rewire is a bit complicated. Thanks!

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  • impossible to connect.. days trying..

    - by dany
    I have a problem: I am on Debian. I configured my nic with a static ip (192.168.1.56). When I try to connect to a network, initially with ifconfig eth2 I get (correctly): eth2 inet addr:192.168.1.56 .... inet6 addr: fe80:221:ff:fe96:4598/64 but after a few seconds the 102.168.1.56 disappears and after some other seconds disappears the inet6 address too. When I press in the nm-applet it requires me the password but in the meantime it try to connect. At uni, the connection is a DHCP one. It works for the first few seconds but after it doesn't. Any possible solution? Here it is the relevant part of the syslog: (static ip configuration) http://pastebin.com/u3BPAsda

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  • One NIC going to sleep on Centos system

    - by sbleon
    I have two Dell boxes with two ethernet ports a piece. I have a cable directly connecting two of these ports, creating a tiny LAN with 10.3.3.x addresses. The other port on each box is hooked up to a switch and has a DHCP-supplied address to talk to the outside world. I've noticed that when scp'ing large files from one box to the other over the private LAN, the transfers sometimes stall. It appears that any other network activity on either box will cause the transfer to resume. Wake-on-LAN is disabled on all interfaces according to ethtool. What else could be causing these stalled transfers?

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  • My D-Link Router is only allowing one connection

    - by Blaze
    My Router (Model: DI-624) is only allowing one wireless connection to one laptop. The other laptop is stuck hanging at connecting to the Internet I have the SSID set as "Pedro-Home" and is using a WPA PSK secured password. I have set the router using "Blaze-PC" while wired. Both Laptops critically need the Internet. > Dynamic DHCP Client List > > Host Name IP Address MAC > Address Expired Time > Blaze-PC 192.168.0.100 70-f1-a1-ff-39-a8 Apr/21/2011 17:49:14 > pedro 192.168.0.105 00-26-82-c8-47-25 Apr/21/2011 17:50:05 <<This computer isn't connecting.

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  • No DNS resolving with VPN (RRAS)

    - by Sven
    I have a RRAS server setup on a Windows 2003 machine with two NIC's. The VPN works like a charm, I can ping all the other computers on the network. But it fails when I try to access resources with hostnames. I searches for a solution but the ones I found are about RRAS setup with a remote DHCP server. But in my case it's the RRAS server that hands out the ip addresses (option for redirection for WINS, DNS is ON and set to the LAN NIC). I also heard something about FQDN.. but I don't really understand what that is.

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  • Setting a wireless access point on Ubuntu server 11.10

    - by Solignis
    I am trying to setup a wifi access point with my Ubuntu server. I have managed to get my phone to connect the wireless and now it get a DHCP lease. Though it still cannot ping out or get pinged by anything on my network. I am prety sure my problem is iptables, but I not sure what would be wrong. Here is what my rules look like. (The ones pertaining to the bridge interface) # Allow traffic to / from wireless bridge interface iptables -A INPUT -i br0 -j ACCEPT iptables -A OUTPUT -o br0 -j ACCEPT I am guessing my rules are a little lean, the bridge exists on the same subnet as everything else on my network, I am using a 10.0.0.0/24 subnet. EDIT Oh yeah I should mention also, when I do a ping test, I get Destination Host Unreachable as the error.

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  • How to set up my network/bridging using Apple Airport equipment?

    - by John
    I'd like to set up my network like this, and I want to make sure it's possible using the hardware I have. I think it should be... I've got my cable modem in one room. I want to plug it into an Apple Airport Express and create my wireless my wireless network here. The airport express will do the NAT and DHCP. By my TV there are a few things to be networked (Xbox and Tivo). I have an airport extreme here. I'd like to have the airport extreme join the wireless network and share the connection to the ethernet ports. Can anyone provide some assistance on the best way to configure to do this? Thanks!

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  • how're routing tables populated?

    - by Robbie Mckennie
    i've been reading "tcp/ip illustrated" and i started reading about ip forwarding. all about how you can receive a datagram and work out where to send it next based on the desination ip and your routing table. but what confused me is how (in a home network setting) the table itself is populated. is there a lower layer protocol at work here? does it come along with dhcp? or is it simply based on the ip address and netmask of each interface? i do know (from other books) that in the early days of ethernet one had to set up routing tables by hand, but i know i didn't do that.

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  • Instructions to setup domain controller

    - by Robert Koritnik
    Where could I get best step by step instructions (with some simple explanations) how to setup domain controller on Windows Server 2008 R2 Server Core? I don't know what do I need? Do I need DNS as well and AD and so on and so forth. I don't know enough about these things, but I need to set them up to prepare development environment. I would also like to know how to configure firewall on DC machine, to make it visible on other machines because I've setup DC somehow but I can't connect to it... This is my HW config: Linksys internet router with DHCP my dev machine is Windows 7 my DC machine is a VM in my dev machine my dev machine has a network adapter to linksys and a virtual adapter to DC DC machine has two network adapters: one to linksys (to be inetrnet connected) and one to host (my dev Win7 machine)

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  • 2wire modem to linksys router

    - by Imajica666
    I want to hook a Linksys router to my 2wire modem/router (2701HG-b) to share my Internet connection. I ran from an open port from the 2wire to the WAN port of the Linksys but it will not work. I did this before with my cable modem to a router to my Linksys router. It worked then but not now. I read I can turn the 2 wire into a modem only but I need the 2wire wireless access also. IPCONFIG /ALL sees the 2wire with IP info as well as DHCP server/gateway. Any ideas?

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  • Setting up wifi router as a switch for Internet Connection Sharing

    - by William C
    Can my laptop with a 3G connection share its Internet via a Wifi router (Dlink DIR-615)? I turned Internet Connection Sharing on and Windows assigned 192.168.137.1 to my laptop's LAN adapter. Do I connect my laptop to the WAN port or to the LAN port of the router? What should I set as my router's IP address? Do I turn DHCP on my router on? Do I assign 192.168.137.x as static addresses on the other computers? If not, what? Is there anything else I need to set on my router? Thank you!

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  • No Internet for Created VLan on Cisco CE500

    - by Jennifer
    I'm new here and also with networking but i can't set internet conection for some vlan created. I have a Cisco CE500 switch and created 4 vlans define by the roles in the switch. Vlan 2: Servers (role) (port 3-4) Vlan 3: Desktop (role) (port 5-8) Vlan 4: Guest (role) (port 9-12) Vlan 1 is default, Connect to the ADSL Modem/Router Port 2 assign to the Router Role (vlan 1) The switch is connected on port2 the ADSL Modem (DHCP) 192.168.2.254 The goal is: All Vlan should have internet connection. Vlan 2 and 3 should see each other but not Vlan 4 I can enter the switch CLI but dont know which command to enter. Thanks 4 ur time and replies Jennifer

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  • WDS - Clients receive Error: PXE-E53: No boot filename received

    - by Ninja2k
    I have setup WDS on Windows 2008 server in a Vmware box so I can practise setting up WDS,the server has DNS and DHCP as well as AD, the boot image is confirmed as working but when my clients try to boot up it does not work. I have checked the following: Clients can ping the WDS server. The WDS service is started Boot images for X86 and X64 are deployed. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WDSServer\Providers\WDSPXE UseDhcpPorts has been set to 0 My clients just receive Error: PXE-E53: No boot filename received. Any idea what could be wrong?

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  • How to enable RDP to a Server 2008 R2 on another network? VM network

    - by Saariko
    I have a W2008 R2 installed on a different network (I am on 192.168.0.x - new server on 192.168.3.x) I had trouble ping and RDP to it. I disabled the firewall to test the connection: and that opened the ping feature but I still can not RDP to that machine. the allow remote access is enabled As per sinni80 idea - Here is the error message The networks are divided by a Fortigate 60-B router - 2ndy interface for the gateway is 192.168.3.254 (and pingable from all) any to any rule on both networks is in place. As per Joe Schmoe idea - I am able to RDP to 192.168.3.1 from 192.168.3.3 (which is on the same network) Data to add: - The servers are on a VM host, each of the servers has 2 nics one is DHCP enabled into the 192.168.0.x network 2nd is static IP in the 192.168.3.x -- Further information: The network 192.168.0.x - are on a domain network (active Directory) The network 192.168.3.x - are grouped in a workgroup What should I check more please?

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  • OpenVPN route missing

    - by dajuric
    I can connect to an OpenVPN server from Windows without any problems. But when I try to connect from Ubuntu 12.04 (start OpenVPN) I receive the following: OpenVPN needs a gateway parameter for a --route option and no default was specified by either --route-gateway or --ifconfig options SERVER IP: 161.53.X.X internal network: 10.0.0.0 / 8 What I need to do ? client configuration: client dev tap proto udp remote 161.53.X.X 1194 resolv-retry infinite nobind ca ca.crt cert client.crt key client.key ns-cert-type server comp-lzo verb 3 server conf: local 161.53.X.X port 1194 proto udp dev tap dev-node OpenVPN ca ca.crt cert server.crt key server.key # This file should be kept secret dh dh1024.pem # DHCP leases addresses to clients server-bridge # Push routes to the client to allow it # to reach other private subnets behind # the server. Remember that these # private subnets will also need # to know to route the OpenVPN client # address pool (10.8.0.0/255.255.255.0) # back to the OpenVPN server. push "route 10.0.0.1 255.255.0.0" client-to-client duplicate-cn keepalive 10 120 comp-lzo verb 6

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  • Help with OpenVPN setup on Windows Server 2003

    - by Bill Johnson
    Hi all, Just wondering if someone can assist me further with the set-up of OpenVPN on my Windows Server 2003. I have configured Win Server as per the following guide: http://tinyurl.com/kxusv and I'm now at the stage of Creating the config files. I have a few questions that I need some assistance with. My server IP is 192.168.1.10 and my routers IP address is 192.168.1.1 (the router is a Netgear DGN2000). I have edited the server.ovpn file as per the following: push "dhcp-option DNS X.X.X.X" # Replace the Xs with the IP address of the DNS for your home network (usually your ISP's DNS) push "dhcp-option DNS X.X.X.X" # A second DNS server if you have one to include my ISP DNS and I have not edited anything else. Now my issue is with the client1.opvpn file as per the below: client dev tap #dev-node MyTAP #If you renamed your TAP interface or have more than one TAP interface then remove the # at the beginning and change "MyTAP" to its name proto udp remote YOURHOST.dyndns.org 1194 #You will need to enter you dyndns account or static IP address here. The number following it is the port you set in the server's config route 192.168.1.0 255.255.255.0 vpn_gateway 3 #This it the IP address scheme and subnet of your normal network your server is on. Your router would usually be 192.168.1.1 resolv-retry infinite nobind persist-key persist-tun ca "C:\\Program Files\\OpenVPN\\easy-rsa\\keys\\ca.crt" cert "C:\\Program Files\\OpenVPN\\easy-rsa\\keys\\client1.crt" # Change the next two lines to match the files in the keys directory. This should be be different for each client. key "C:\\Program Files\\OpenVPN\\easy-rsa\\keys\\client1.key" # This file should be kept secret ns-cert-type server cipher BF-CBC # Blowfish (default) encrytion comp-lzo verb 1 To me it looks like I will need to amend the following: remote YOURHOST.dyndns.org 1194 #You will need to enter you dyndns account or static IP address here. The number following it is the port you set in the server's config route 192.168.1.0 255.255.255.0 vpn_gateway 3 #This it the IP address scheme and subnet of your normal network your server is on. Your router would usually be 192.168.1.1 So, should the first line be the static IP of the machine that I'm applying this to? The IP address of the server (192.168.1.10) or something else? I'm also stuck on the second part 'route 192.168.1.0 255.255.255.0 vpn_gateway 3' Should this be the router IP which is 192.168.1.1 and the subnet is 255.255.255.0 and that is all I need to alter? The final part that I'm stuggling with is Configuring the router. Basically I have a Netgear DGN2000 and as it mentions that the router should be configured to port forward port 1194 to the server’s IP address of 192.168.1.150 all I have been able to do is in 'Firewall Rules' and on 'Inbound Services', set the Service to 'Any(ALL) and Send to LAN Server point to 1923.168.1.150. I'm not sure if this is correct? It is the following stage of the help guide that I'm struggling with and really need some help with: You need to make sure the port you configured OpenVPN to listen on is forwarded on the router to the IP address of your server. On the WRT54G, port forwarding is configured in the “Applications & Gaming” section. Enter 1194 for the port, UDP for the protocol, and 192.168.1.150 for the IP address. Make sure the entry is enabled and then save the setting. Next, you need to add an entry to the router’s Routing Table. This will enable the router to properly route requests from the clients to the TAP interface of the server. On the WRT54G you would go to the “Setup” page and then the “Advanced Routing” section. Enter the follwing info to make the entry: Enter Route Name: openVPN Destination LAN IP: 192.168.10.0 Subnet Mask: 255.255.255.252 Default Gateway: 192.168.1.150 Interface: LAN & Wireless Once the info has been typed in make sure you save the setting. Can anyone possibly guide me through setting this part up with my Netgear router. I see that once I have these 2 parts complete I'm there so I would really appreciate someone walking me through what is required in completing this. Much appreciated.

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  • setting up a private network using linksys router

    - by user287745
    scenerio:- a database server running sql server 2005 and sql server management studio 2005 express editions a web server running IIS 5.0v using windows xp pro. two other computer having windows xp and windows 98 i have a linksys router which i use to access point for wireless (laptop) there are 5 sockets behind it four for clients and one for internet. i would like to setup a LAN- something like a private hosting area with two clients. would should i do? where to connect what and what would the changes in settnigs be. right now it uses dhcp or something to assign ips. where will the webserver be attached to the internet socket? where will the db server be attached? any guide, links, help thank you

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  • 10 System LAN latency with ADSL modem as gateway

    - by itsoft3g
    Recently I expanded LAN in my office from 3 to 10 computers. Structure star topology, one ADSL Modem connected to One Switch which is again connected to 10 computers. Also we have Wifi device Netgear which is connected from switch. ADSL Modem acts as the DHCP Server, all the system will have default gateway IP (ADSL Modem's IP) Network latency is now become very high, All the chat severs disconnect often like google talk, skype etc, also internet become very very slow. when all the computer turned on. We have 4 Mbps Download and 100 Kbps upload Net speed. Its look like ADSL Modem cannot able to handle all the connections. I tried to setup a system as default gateway which will connect to modem, not sure how to do this. Please advice on this.

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  • Configuring Wireless Network

    - by Vinod K
    I have vyataa router on VMware with 2 interfaces eth0 and eth1 eth0 is facing the internet eth0 is in Nat mode with dhcp on eth1 is in bridged mode with my ethernet with ip 10.0.2.34/24 The ethernet card is at ip 10.0.2.95/24 i have defined the nat rule. Hence internet is available at eth1 too. Now i am connecting a wireless router at "eth1" iball router, I have connected the router using a cable to the ethernet interface of my laptop. I have configured the WAN connection type as "Static IP" and given "10.0.2.34/24" All the clients that connect using wireless router cannot connect to the internet though. Could anyone provide me a solution for this.. Thank You!!

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  • VPN is working, except for DNS lookups. Firewall (Cisco ASA 5505) issue?

    - by macke
    I've got the following set up: LAN -> DHCP / DNS / VPN server (OSX 10.6) -> Cisco ASA 5505 -> WAN Connecting to the LAN via VPN works fine. I get all the details properly and I can ping any host on the internal network using their IP. However, I can't do any host lookups whatsoever. I've looked through the logs on and found this nugget in the firewall log: 3 Sep 08 2010 10:46:40 305006 10.0.0.197 65371 portmap translation creation failed for udp src inside:myhostname.local/53 dst inside:10.0.0.197/65371 Port 53 is dns services, no? Because of that log entry, I'm thinking that the issue is with the firewall, not the server. Any ideas? Please keep in mind that I have very little knowledge and experience with this kind of firewall and the little experience I do have is with the ASDM GUI console, not the CLI console.

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  • Debian Wheezy, hostapd running but no AP detected by clients

    - by f0o
    I've an TL-WN951N (AR5416+AR5008) using ath9k module running an hostapd and a dhcp for it. So hostapd starts fine: $ hostapd wifi.test Configuration file: wifi.test Using interface int1 with hwaddr f4:ec:38:9b:d4:93 and ssid 'test' hostapd.conf: interface=int1 driver=nl80211 ssid=test channel=1 But nobody seems to find it or being able to see it or connect to it by setting BSSID to 'test'. I'm quite frustrated now, I find 'howto' after 'howto' from people with same chipsets and it always seemed to work out great for them - but not here... iw list even shows up the AP mode being present at the interface... Thanks for your help

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  • Sharing wireless internet connection between 2 Ubuntu 10.04 systems using cross-over cable

    - by Gary
    I have a Lenovo T60 with Ubuntu 10.04 connected with a cross-over cable to a Dell Vostro 1400, also running Ubuntu 10.04. My internet is coming into the Lenovo through an external wireless antennae, and I want to share the internet with the Dell. On the Lenovo: eth0 connection has IPv4 Settings 'Shared to other computers' I can ping the Dell (10.42.43.10) successfully I can use mtr to trace to www.google.com successfully On the Dell: eth0 connection has IPv4 Settings 'Automatic DHCP' I can ping the Lenovo (10.42.43.1) successfully when I use mtr to trace to www.google.com, I can only reach 10.42.43.1 I must be missing some setting, but cannot see what it is; can anyone help me?

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  • How to connect a remote IP Phone to our VOIP Network?

    - by Mistiry
    We have an IP phone system in our office, and about 8 VoIP phones running on the system. We have a remote worker, who is literally states away. We'd like to connect his phone to our VoIP network, so that he has a business phone and an extension to which we could transfer calls. I was thinking, although I don't know for sure, that a pair of Cisco routers could be used in some way to make this work. I imagine a VPN solution, where I have one router connected to the phone network and the other router connected to the remote phone. Then have a site-to-site VPN set up so that the remote router... And that's where I'm stuck. I know the remote router will need to use the DHCP server of the phone system. I've never set up something like this, so I am seeking the help of the community here. What is the best way to get this remote VoIP phone RELIABLY connected to our internal VoIP network?

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