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• Single-port 2600 router with 2900XL switch

  - by Slava Maslennikov

  I have a setup, where the single port 2600 router is in port 0/2 in the switch, outside network is on port 0/1, and the rest (0/3-0/24) should be clients for the second network that would be managed by the 2600 router. I configured everything with two VLANs: 100 for outside (0/2-0/24), 200 for inside (0/1-0/2). 0/2 is a trunk port for the two VLANs. The issue that came about is that I can't have two VLANs on at once: software doesn't allow it. Now, I can ping the outside network devices (172.16.7.1, 172.16.7.103), and even google (8.8.8.8) from the router, but not the switch. Devices on connected get a DHCP lease properly but can't ping outside the network, just the router - 172.17.7.1 and the switch itself, 172.17.7.7. The configuration for both the router and the switch are here, as well as below. Router: rt.throom#sho run Building configuration... Current configuration : 1015 bytes ! version 12.1 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname rt.throom ! enable password To053cret ! ! ! ! ! no ip subnet-zero ip dhcp excluded-address 172.17.7.1 172.17.7.2 ip dhcp excluded-address 172.17.7.3 172.17.7.4 ip dhcp excluded-address 172.17.7.5 ! ip dhcp pool VLAN200 network 172.17.7.0 255.255.255.0 default-router 172.17.7.1 dns-server 8.8.8.8 ! ip audit notify log ip audit po max-events 100 ! ! ! ! ! ! ! interface Ethernet0/0 no ip address ! interface Ethernet0/0.100 encapsulation dot1Q 100 ip address 172.16.7.15 255.255.255.0 ip nat outside ! interface Ethernet0/0.200 encapsulation dot1Q 200 ip address 172.17.7.1 255.255.255.0 ip nat inside ! router eigrp 20 network 172.16.0.0 network 172.17.0.0 no auto-summary no eigrp log-neighbor-changes ! no ip classless no ip http server ! access-list 1 permit 172.17.7.0 0.0.0.255 ! ! line con 0 line aux 0 line vty 0 4 login ! end Switch: sw.throom#sho run Building configuration... Current configuration: ! version 11.2 no service pad no service udp-small-servers no service tcp-small-servers ! hostname sw.throom ! enable password Oh5053cret ! ! no spanning-tree vlan 100 no spanning-tree vlan 200 ip subnet-zero ! ! interface VLAN1 no ip address no ip route-cache ! interface FastEthernet0/1 switchport access vlan 100 spanning-tree portfast ! interface FastEthernet0/2 switchport trunk encapsulation dot1q switchport mode trunk ! interface FastEthernet0/3 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/4 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/5 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/6 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/7 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/8 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/9 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/10 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/11 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/12 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/13 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/14 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/15 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/16 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/17 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/18 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/19 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/20 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/21 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/22 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/23 switchport access vlan 200 spanning-tree portfast ! interface FastEthernet0/24 switchport access vlan 200 spanning-tree portfast ! ! line con 0 stopbits 1 line vty 0 4 login line vty 5 9 login ! end sho ip route gives: Gateway of last resort is 172.16.7.1 to network 0.0.0.0 172.17.0.0/24 is subnetted, 1 subnets C 172.17.7.0 is directly connected, Ethernet0/0.200 172.16.0.0/24 is subnetted, 1 subnets C 172.16.7.0 is directly connected, Ethernet0/0.100 S* 0.0.0.0/0 [1/0] via 172.16.7.1

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• Why Wifi no longer works 12.04.1

  - by Roger

  starting this morning over wifi (Realtek RTL8188CE) on CLEVO W253HU. May be due to the update before yesterday, more pilot managed, but somehow it worked yesterday. If someone has an idea of the problem. Back command lines: cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS" lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 006: ID 192f:0416 Avago Technologies, Pte. Bus 002 Device 004: ID 5986:0315 Acer, Inc lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01) 03:00.0 Ethernet controller: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller (rev 05) 03:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 90) 03:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 90) 03:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 90) lspci -nn | grep -i net 02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01) 03:00.0 Ethernet controller [0200]: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller [197b:0250] (rev 05) lspci -k 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: agpgart-intel 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: i915 Kernel modules: i915 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: mei Kernel modules: mei 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: ehci_hcd 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel modules: iTCO_wdt 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel modules: i2c-i801 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01) Subsystem: Realtek Semiconductor Co., Ltd. Device 9196 Kernel modules: rtl8192ce 03:00.0 Ethernet controller: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller (rev 05) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: jme Kernel modules: jme 03:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 90) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: sdhci-pci Kernel modules: sdhci-pci 03:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 90) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel modules: sdhci-pci 03:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 90) Subsystem: CLEVO/KAPOK Computer Device 4140 Kernel driver in use: jmb38x_ms Kernel modules: jmb38x_ms sudo lshw -C network *-network NON-RÉCLAMÉ description: Network controller produit: RTL8188CE 802.11b/g/n WiFi Adapter fabriquant: Realtek Semiconductor Co., Ltd. identifiant matériel: 0 information bus: pci@0000:02:00.0 version: 01 bits: 64 bits horloge: 33MHz fonctionnalités: pm msi pciexpress cap_list configuration: latency=0 ressources: portE/S:e000(taille=256) mémoire:f7d00000-f7d03fff *-network description: Ethernet interface produit: JMC250 PCI Express Gigabit Ethernet Controller fabriquant: JMicron Technology Corp. identifiant matériel: 0 information bus: pci@0000:03:00.0 nom logique: eth0 version: 05 numéro de série: 00:90:f5:c1:c6:45 taille: 100Mbit/s capacité: 1Gbit/s bits: 32 bits horloge: 33MHz fonctionnalités: pm pciexpress msix msi bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=jme driverversion=1.0.8 duplex=full ip=192.168.1.54 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s ressources: irq:44 mémoire:f7c20000-f7c23fff portE/S:d100(taille=128) portE/S:d000(taille=256) mémoire:f7c10000-f7c1ffff mémoire:f7c00000-f7c0ffff lsmod Module Size Used by btusb 18288 0 rfcomm 47604 0 bnep 18281 2 bluetooth 180104 11 btusb,rfcomm,bnep parport_pc 32866 0 ppdev 17113 0 binfmt_misc 17540 1 snd_hda_codec_realtek 224173 0 dm_crypt 23125 0 snd_hda_codec_hdmi 32474 0 uvcvideo 72627 0 videodev 98259 1 uvcvideo v4l2_compat_ioctl32 17128 1 videodev snd_hda_intel 33773 2 snd_hda_codec 127706 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel snd_hwdep 13668 1 snd_hda_codec snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_seq_midi 13324 0 snd_rawmidi 30748 1 snd_seq_midi jmb38x_ms 17646 0 psmouse 87692 0 serio_raw 13211 0 memstick 16569 1 jmb38x_ms snd_seq_midi_event 14899 1 snd_seq_midi rtl8192ce 84826 0 rtl8192c_common 75767 1 rtl8192ce rtlwifi 111202 1 rtl8192ce snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event snd_timer 29990 2 snd_pcm,snd_seq snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq mac80211 506816 3 rtl8192ce,rtl8192c_common,rtlwifi mac_hid 13253 0 snd 78855 14 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device cfg80211 205544 2 rtlwifi,mac80211 soundcore 15091 1 snd snd_page_alloc 18529 2 snd_hda_intel,snd_pcm mei 41616 0 lp 17799 0 parport 46562 3 parport_pc,ppdev,lp usbhid 47199 0 hid 99559 1 usbhid i915 473035 3 drm_kms_helper 46978 1 i915 drm 242038 4 i915,drm_kms_helper jme 41259 0 i2c_algo_bit 13423 1 i915 sdhci_pci 18826 0 sdhci 33205 1 sdhci_pci wmi 19256 0 video 19596 1 i915 iwconfig lo no wireless extensions. eth0 no wireless extensions. ifconfig eth0 Link encap:Ethernet HWaddr 00:90:f5:c1:c6:45 inet adr:192.168.1.54 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6: fe80::290:f5ff:fec1:c645/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:4513 erreurs:0 :0 overruns:0 frame:0 TX packets:4359 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:3471675 (3.4 MB) Octets transmis:712722 (712.7 KB) Interruption:44 lo Link encap:Boucle locale inet adr:127.0.0.1 Masque:255.0.0.0 adr inet6: ::1/128 Scope:Hôte UP LOOPBACK RUNNING MTU:16436 Metric:1 Packets reçus:686 erreurs:0 :0 overruns:0 frame:0 TX packets:686 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 Octets reçus:64556 (64.5 KB) Octets transmis:64556 (64.5 KB) sudo iwlist scan lo Interface doesn't support scanning. eth0 Interface doesn't support scanning. uname -r -m 3.2.0-30-generic x86_64 cat /etc/network/interfaces auto lo iface lo inet loopback nm-tool NetworkManager Tool State: connected (global) - Device: eth0 [Connexion filaire 1] ------------------------------------------ Type: Wired Driver: jme State: connected Default: yes HW Address: 00:90:F5:C1:C6:45 Capabilities: Carrier Detect: yes Speed: 100 Mb/s Wired Properties Carrier: on IPv4 Settings: Address: 192.168.1.54 Prefix: 24 (255.255.255.0) Gateway: 192.168.1.1 DNS: 192.168.1.1 sudo rfkill listrfkill list 1: hci0: Bluetooth Soft blocked: no Hard blocked: no The absence of line "Kernel driver in use:" the return of lspci-k made ??me think that it is not loaded yet but he seems to be. lsmod | grep rtl8192ce rtl8192ce 137478 0 rtlwifi 118749 1 rtl8192ce mac80211 506816 2 rtl8192ce,rtlwifi I found something disturbing in / var / log / syslog Sep 14 11:40:11 pcroger kernel: [ 64.048783] rtl8192ce-0:rtl92c_init_sw_vars():<0-0> Failed to request firmware! Sep 14 11:40:11 pcroger kernel: [ 64.048795] rtlwifi-0:rtl_pci_probe():<0-0> Can't init_sw_vars. Sep 14 11:40:11 pcroger kernel: [ 64.048835] rtl8192ce 0000:02:00.0: PCI INT A disabled Sep 14 11:40:11 pcroger kernel: [ 64.943345] ata1.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x6 frozen Sep 14 11:40:11 pcroger kernel: [ 64.943358] ata1.00: failed command: READ FPDMA QUEUED Sep 14 11:40:11 pcroger kernel: [ 64.943371] ata1.00: cmd 60/00:00:00:68:6a/04:00:0b:00:00/40 tag 0 ncq 524288 in Sep 14 11:40:11 pcroger kernel: [ 64.943374] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Sep 14 11:40:11 pcroger kernel: [ 64.943381] ata1.00: status: { DRDY } Ubuntu and takes forever to start (2 min).

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• Is it possibile to alow port forwarding only for specific IP public addresses

  - by adopilot

  I have freeBSD router and it host public IP address, I am using ipnat.rules to configure port forwarding prom public network inside my private network. Now I wondering can I restrict only specific public IP addresses to can pass trough my port forwarding. What I want is to only my specific public IP addresses can walk inside my network on specific ports. Here is how now look like my ipnat.rules file rdr fxp0 217.199.XXX.XXX/32 port 7900-> 192.168.1.12 port 80 tcp

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• Enable File sharing in Windows Vista

  - by LiveEn

  There seems to be a problem in my Windows Vista.. In the network and sharing centre only the network discovery is visible. I cant find a option for file sharing as mentions in other websites. There is no folder sharing option on any folder. Can someone please tell me how to enable file sharing in my Windows Visa? i cant share any of my file in the network.

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• how can make transparent proxy on more than one port?

  - by ermya

  i want to make transparent proxy with linux ( centos) , i want all incoming connection on port 1000 - 2000 on eth0 forward to eth1 on port 1000 - 2000 in transparent mode i have 2 server 1- linux ( proxy server) 2- windows i want protect my windows server with my linux server firewall also i must make transparent proxy with my linux server linux server have 2 interface one for public network an another for private network connected to windows server so all incoming connection must connect to the linux server (at eth0 public network) first and after checking , must forward to the windows server on private network (with linux interface eth1 ) i can use squid for making transparent proxy but i dont know how i must config the squid for multi port because i want listen in more than 1000 ports for example from port 1000 to 2000 anyone know how can i do ?

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• Setup.exe called from a batch file crashes with error 0x0000006

  - by Alex

  We're going to be installing some new software on pretty much all of our computers and I'm trying to setup a GPO to do it. We're running a Windows Server 2008 R2 domain controller and all of our machines are Windows 7. The GPO calls the following script which sits on a network share on our file server. The script it self calls an executable that sits on another network share on another server. The executable will imediatelly crash with an error 0x0000006. The event log just says this: Windows cannot access the file for one of the following reasons: there is a problem with the network connection, the disk that the file is stored on, or the storage drivers installed on this computer; or the disk is missing. Windows closed the program Setup.exe because of this error. Here's the script (which is stored on \\WIN2K8R2-F-01\Remote Applications): @ECHO OFF IF DEFINED ProgramFiles(x86) ( ECHO DEBUG: 64-bit platform SET _path="C:\Program Files (x86)\Canam" ) ELSE ( ECHO DEBUG: 32-bit platform SET _path="C:\Program Files\Canam" ) IF NOT EXIST %_path% ( ECHO DEBUG: Folder does not exist PUSHD \\WIN2K8R2-PSA-01\PSA Data\Client START "" "Setup.exe" "/q" POPD ) ELSE ( ECHO DEBUG: Folder exists ) Running the script manually as administrator also results in the same error. Setting up a shortcut with the same target and parameters works perfectly. Manually calling the executable also works. Not sure if it matters, but the installer is based on dotNETInstaller. I don't know what version though. I'd appreciate any suggestions on fixing this. Thanks in advance! UPDATE I highly doubt this matters, but the network share that the script is hosted in is a shared drive, while the network share the script references for the executable is a shared folder. Also, both shares have Domain Computers listed with full access for the sharing and security tabs. And PUSHD works without wrapping the path in quotes.

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• Configure an Azure VM for Dynamic DNS for Cloud Services

  - by Adam

  I am trying to setup an azure VM with proper DNS to allow multiple cloud services to communicate across cloud service boundaries. As I understand it, I need to provide my own DNS server. I do not have any on-premise infrastructure, so I am trying to configure an Azure VM to act as my DNS. This SO question (http://stackoverflow.com/questions/21858926/azure-how-to-connect-one-cloud-service-with-other-in-one-virtual-network) is very similar to my setup. This article (http://msdn.microsoft.com/en-us/library/windowsazure/jj156088.aspx) describes my particular case: Name resolution between virtual machines and role instances located in the same virtual network, but different cloud services Here is what I have done: Created Azure Virtual Network and declared subnets for each of my cloud services. Created an Azure VM (Windows 2012 R2) with DNS enabled RDP to the VM and enabled the DNS role and installed features Added the appropriate NetworkConfiguration xml section to each of my cloud services .csfg files Re-deployed my cloud services I have verified that I setup the virtual network and networkconfiguration properly because my cloud service hosts are able to communicate with each other if I use the internal ips. However, name resolution doesn't appear to be working, and it doesn't appear that my cloud service roles can communicate with my DNS server. How do I configure my VM so that my different cloud services roles register themselves with my DNS server? EDIT: I think I am 1 step closer to getting this to work. The cloud services that I was using are in an old affinity group which is not supported by VMs, so I was unable to add my VM into my virtual network. I created a new VNET in a new affinity group with my VM added into it. However, I still don't know how to configure the azure VM's DNS server so that the cloud services register themselves for name resolution. Also, an added bonus guaranteed to get a +1 would be to explain if it is possible to register a DNS entry for the VIP for an internal endpoint of my cloud services so we can get load balancing. Thanks!

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• How to setup an IPSec / GRE tunnel on Windows Server 2008

  - by qbeuek

  I have a Windows Server 2008 that has a single network interface configured with a public IP address. My business partner has a private network. From my server, I need to access all the devices on his private network, and those devices must be able to access my server. My business partner has a standard solution for these requirements. They will setup an IPSec + GRE tunnel to my server. They told me, that I will need an additional public IP address for this to work. If it really is necessary, there is no problem, I can get an additional public IP address, although it will be assigned to the same physical network interface. I assume that on my server I will have both public IP addresses and also the private IP address from the tunnel (the same that is visible for the devices inside the private network). What alternatives do I have? Is it possible to configure this tunnel on my Windows Server 2008? Can it be done using only Windows tools, or do I need an additional free / commercial VPN software? If it cannot be done directly on Windows, can I setup an additional virtual machine running Linux, that will handle the IPSec + GRE tasks? How to do it? If it cannot be done on a virtual linux box, will I have to buy and setup a Cisco router to handle the IPSec + GRE tasks? Thanks for your opinions. I'm watching this question to clarify any issues or questions.

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• Good option for a transparent internet gateway on Mac OS X

  - by Gareth

  Hi I have a small network of Mac systems, and would like to add some internal monitoring of our internet usage, which has recently begun to climb. I would like to configure one of the machines as an internet gateway, and install some monitoring software that could provide graph indications of network usage by machine. The machine would then double as a workstation and as the internet gateway. I can manually configure the machines on the network to use it as a gateway, and would prefer to avoid an explicit http proxy (although it is an option if necessary). What software would serverfault users recommend to provide simple, easily configurable and maintainable network monitoring on Mac OS 10.5.7 (non-server)? The simplest requirement is monitor usage by IP Address, but additional tracking (e.g. destination, protocol, etc) would be useful.

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• Mac Mini monitor on the move – can I use VNC or a portable monitor?

  - by Jjunju

  I have been investigating the possibility of using my PC to control my soon to arrive Mac Mini when on the move. I can't afford and hope you don't give me answers suggesting buying a MacBook. My Mac Mini is the high end type. Now I have seen that the only viable option seems to be VNC. But how does this work if I am not on a network? Does VNC work with an ad-hoc network? Can a PC be connected to a Mac on such a network? Can this network be configured once at home and then be available on startup on the move? If I have an iPhone, can I use it as my wifi? But then, how would I start the Mac Mini to make the connection, since it wouldn't have a screen on the move? Finally, are there any small portable screens one can carry in a bag?

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• Error while bringing up eth1

  - by mhay

  I'm getting this error while bringing up my network card: (process:2550): WARNING **: _nm_object_get_property: Error getting 'State' for /org/freedesktop/NetworkManager/ActiveConnection/3: (19) Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist I'm using the following commands: 1. ifup eth1 2. /etc/init.d/network restart I have installed a fresh copy of Centos 6.2 and configured the network card.

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• Fresh Proxmox VE 2.1 installation with defaults can't be reached or pinged

  - by Damainman

  I am using the lastest Proxmox VE 2.1. My server has two NICS with a uplink only connected into eth0. My Server is a co-located server utilizing public IPv4 IPs. It is not behind a firewall or any system which monitors traffic. Via IPKVM I did a fresh install of Proxmox, I put in the correct IP, Mask, Gateway, and DNS information. The install went perfectly fine with no errors. Upon completion and rebooting the system: I am unable to reach the web GUI via the browser, it just times out. I am unable to ping the server. I am unable to ping outside to the Internet from within the server. Tried pinging out to 4.2.2.2 and yahoo.com I tried rebooting the server and restarting the network service. IFCONFIG shows my IP information under vmbro0 which also has the same MAC address as the eth0 device. eth0 only displays a IPv6 Scope:Link address, which I did not setup myself. This is my first time installing proxmox, but after searching for a few hours it doesn't seem like anyone else is having the same issue as me from a fresh install with just the defaults. So far the only thing I did was install it. Also, I know the network cable is good and the IP is good because I was running a Xen XCP server with the same network settings prior to wiping it to install proxmox. Some additional information: for pveversion -v (Installed proxmox-ve_2.1-f9b0f63a-26.iso) pve-manager: 2.1-1 (pve-manager/2.1/f9b0f63a) running kernel: 2.6.32-11-pve proxmox-ve-2.6.32: 2.0-66 netstat -nr (note: .136 is my network, and .137 is my gateway) Destination - Gateway - Genmask xxx.xxx.xxx.136 - 0.0.0.0 - 255.255.255.248 0.0.0.0 - xxx.xxx.xxx.137 - 0.0.0.0 /etc/network/interfaces auto lo iface lo inet loopback auto vmbr0 iface vmbr0 inet static address xxx.xxx.xxx.138 netmask 255.255.255.248 gateway xxx.xxx.xxx.137 bridge_ports eth0 bridge_stp off bridge_fd 0

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• How to turn on Airport on MacBook Pro

  - by hap497

  Hi, I am using MacBook Pro (Mac OS X 10.5). On the status bar, check I click the Wireless icon, it said 'Open Network Preferences' And then in the Network Preference, I click 'AirPort' tab, the status said 'Inactive' But the 'Turn AirPort on' is disabled and the Network Name is disabled as well. I have unlocked the preference pane as well. So how can I turn on Airport? Thank you.

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• Routing for Two Hosts Behind a IPSec Tunnel

  - by Brent

  Network A 10.110.15.0/24 Firewall is .1 Host A is .2 Network B 10.110.16.0/24 Firewall is .1 Host B is .2 Two Cisco ASA's. IPSec tunnel with a crypo map that secures 10.110.15.0/24 <- 10.110.16.0/24. Let's say two hosts, 10.110.15.2 and 10.110.16.2 need to talk to each other. Normally I have to enter a persistent static route on a each host along the lines of: route add 10.110.16.0 mask 255.255.255.0 10.110.15.1 metric 1 -p (on the "A" box) I also have to enter another persistent static route on the .16 host in order for the traffic to know how to get back to the .15 network. Note that the default for each machine IS the firewall, so .1. I have no problem adding persistent routes on Windows/ESX/*nux machines but what about a smart switch in the .16 network that I want to manage from the .15 network. Do I need to run a routing protocol? Do I need to have Reverse Route Injection enabled on both ends of the IPSec tunnel? Should I add a route on the firewall? If so, how do you formulate it? Does it get a metric of 1 and my default route 0.0.0.0 get a metric of 2?

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• How to get Broadcom BCM 43XX Wireless card working

  - by Fer1805

  NOTE - Although this question is for a specific version of Ubuntu and a specific Broadcom model, the answer to it is for most Broadcom models and versions of Ubuntu 11.04, 11.10, 12.04 and 12.10. If you have come here from another question, feel free to read the answer instead. The answer covers many problems with several solutions. I'm having serious problems installing the Broadcom drivers for Ubuntu 11.04. It worked perfectly on my previous version, but now, it is impossible. I'm a user with no advance knowledge in Linux, so I would need clear explanations on make, compile, etc. I was following the instructions on the following blog, with no luck. How can I get Broadcom BCM4311 Wireless working? Can someone help me? Edit: For the command: "lspci | grep Network", I get the following message: 06:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) For the command: iwconfig, i get the following: lo no wireless extensions. eth0 no wireless extensions. When i follow the following steps (from the above link), there are a NO error message at all: open the 'Synaptic Package Manager' and search for bcm uninstall the bcm-kernel-source package make sure that the firmware-b43-installer and the b43-fwcutter packages are installed type into terminal: cat /etc/modprobe.d/* | egrep '8180|acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|witch|wl' (you may want to copy this) and see if the term blacklist bcm43xx is there if it is, type cd /etc/modprobe.d/ and then sudo gedit blacklist.conf put a # in front of the line: blacklist bcm43xx then save the file (I was getting error messages in the terminal about not being able to save, but it actually did save properly). reboot 'End of procedure' Before (not ubuntu 11.04), if i wanted to connect wireles, i just went to the icon at the upper side of the screen, click, showed ALL the wireless network available, and done. Now, the only options i see are: Wired Network Auto Eth0 Disconnect VPN Enable networking Connection information Edit connection. hope above info is enough for your help.

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• How can I join two simple home networks together using an ethernet cable?

  - by Ilia Jerebtsov

  I want to join two different home networks together like so: PC A1 PC A2 PC B1 PC B2 \ / \ / Gateway A <----- ethr. cable -----> Gateway B | | ADSL modem A ADSL modem B Both networks are of the basic residential type with identical configuration, with all PCs running Vista/7. The point is to temporarily join two apartments in a building for gaming and file sharing, and the holy grail would be: PCs on network A can access PCs on network B and vice-versa (file shares and gaming). Each network uses its own internet connection. Data between networks shouldn't take a trip through the internet (broadband upload speeds are severely capped) A network's internet access should continue working if the joining cable is disconnected with minimal configuration changes. How closely can this be achieved?

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• Oracle(R) Buys Pre-Paid Software Assets From eServGlobal

  - by Paulo Folgado

  Oracle to Deliver Scalable Carrier-Grade Pre-Paid Solution Based on Open, Flexible IT-Based Platform News Facts ·        Oracle has agreed to acquire certain pre-paid assets of eServGlobal, a provider of advanced IT-based, pre-paid charging solutions for the communications industry. ·        eServGlobal's Universal Service Platform (USP) includes a pre-paid charging application, a network-services platform and a messaging gateway. The ChargingMax, NumberMax, uVOMS, MessageMax, PromoMax Express and Social Relationship Management software currently supports more than 25 tier-one customers including the world's largest IT-based installation of pre-paid services. ·        The combination of Oracle Communications Billing and Revenue Management and the USP applications is expected to accelerate the shift from network- to IT-based pre-paid systems by providing the first convergent, open IT-based platform from a leading business software and hardware systems company. ·        Customers are expected to benefit from traditional carrier-grade, pre-paid service authorization with IT-grade flexibility that supports any service or network, is easier to deploy and maintain and delivers an overall lower total cost of ownership. ·        The transaction is expected to close in the second half of this year. Supporting Quote ·        "The majority of mobile phone users worldwide use pre-paid plans, and that number is growing exponentially. Oracle Communications applications combined with the pre-paid software assets from eServGlobal will provide our customers with highly available and scalable carrier-grade, pre-paid software on an open, convergent platform. This will enable our customers to deliver traditional pre-paid voice services and easily introduce hybrid pre-paid and post-paid plans with targeted pricing, promotions and service bundles that include voice, data and network services," said Liam Maxwell, vice president of products, Oracle Communications. Supporting Resources About Oracle and eServGlobal USP General Presentation FAQ

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• wireless access point

  - by Warren Bullock III

  I'm hoping to get some suggestions for possible Wireless Access point/router models which will allow us to have two separate networks. We run an internal network on 10.x.x.x IP range where we have shares and other network resources for which we would like to have our regular users access. However, we would also like to offer a separate wireless network for guests which ideally would be on 192.168.x.x and these users would not be able to see any of the resources sitting on the 10.x.x.x network. Anyone have any recommendations on single devices that might be able to get the job done? I was looking at the Linksys E4200 and it seems to support what I'm looking to do... any others? Thanks in advance for any suggestions.

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• Public static ip for vagrant box

  - by Numbata

  I have server (Debian Squeeze) with 1 ethernet card and 2 public static IPs (188.120.245.4 and 188.120.244.5). What I want: Setup virtual box (Ubuntu) with access via static IP (188.120.244.5). What I was trying: config.vm.forward_port - good idea: setup interface "eth1:1" with 188.120.244.5 on host-machine, and add to Vagrant file "config.vm.forward_port = hmm..?" config.vm.network :hostonly, "188.120.244.5" - not working. Was created new interface on host-machine with ip "188.120.244.1". Of course 188.120.244.1 IP isn't mine and I can't access my server via this IP. config.vm.network :bridged - I'm confused how this works :) What I have now: Not working configuration. Debian-host-machine# cat Vagrantfile Vagrant::Config.run do |config| config.vm.define :gitlab do |box_config| box_config.vm.box = "ubuntu" box_config.vm.host_name = "ubuntu" box_config.vm.network :bridged box_config.vm.network :hostonly, "188.120.244.5", :auto_config => false end end Debian-host-machine# ifconfig eth1 Link encap:Ethernet HWaddr 00:15:17:69:71:bb inet addr:188.120.245.4 Bcast:188.120.247.255 Mask:255.255.248.0 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 vboxnet0 Link encap:Ethernet HWaddr 0a:00:27:00:00:00 inet addr:188.120.244.1 Bcast:188.120.246.255 Mask:255.255.255.0 Ubuntu-virtual-machine# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:ee:8d:0c inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 eth1 Link encap:Ethernet HWaddr 08:00:27:45:71:87 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 How I can access virtual box via public static IP from network? I'm using Oracle VM VirtualBox Manager 4.1.18 and Vagrant version 1.0.3. Thanks in advance for your feedback.

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• Losing internet connectivity on server after installing LogMeIn Hamachi (with server set as gateway node)

  - by Kim Jong-Un

  Our domain controller (SBS 2003) completely lost internet and network connectivity yesterday after I remotely installed LogMeIn Hamachi on it and set it to be a gateway node- in an attempt to create a VPN link between the server and a remote site. I had to go in to the office to resolve the problem as, unsurprisingly, my own remote access to the server was also lost. I was only able to restore network connectivity by deleting a virtual network adapter Hamachi created when making the server the gateway node (called "Hamachi bridge" I believe), then rebooting the server. This is a repeatable problem. Every time I try to get this to work, it just takes the server offline. Why would this bridge affect regular TCP/IP connectivity on the NIC in this way? I have tried a "hub-and-spoke" configuration between the server and our PC at a remote site (server set as hub, remote site as spoke). This caused no such problems with general internet connectivity, and file transfer worked well between the two computers. However, there was a DNS issue with the VPN between the two sites- resulting in Active Directory not being able to communicate between them (could not log on using domain user accounts at remote site if they were not already cached on that machine). I only tried a "gateway" network as LogMeIn support told me: If you can get the Active Directory to work it would only be through a "Gateway" network type with the server acting as the Gateway Node. You would configure the gateway settings on the server in the Hamachi client on that machine to push whatever IP's/DNS settings you prefer and at that point AD would be able (all things being equal) communicate to the client node when it attaches. We do not have any ActiveDirectory configuration info as that's outside the scope of our support. I hope this helps. It would be fantastic if I could get Active Directory to work over a Hamachi VPN connection, without worrying about the server going offline in this way. Does anyone have any ideas how I should proceed, or any theories as to what is going on when I try to use the "gateway" network type? I want to try to narrow down what is going on here.

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• Dual LAN Printing

  - by Christopher

  I want to use Ubuntu 10.10 Server in a classroom, a computer lab whose bandwidth is provided by a local cable ISP. That's no problem, though the school network has an IP printer that I want to use. I cannot reach the printer through the cable Internet. But, I have two network cards. How is it possible to use both networks at once? eth0 (static 192.168.1.254) is plugged into a four-port router, 192.168.1.1. On the public side of the four-port router is Internet provided by the cable company. I also have the classroom workstations plugged into a switch. The switch is plugged into the four-port router. The whole classroom is wired into the cable Internet. The other NIC, eth1, could it be plugged into an Ethernet jack in the wall? It uses the school network, and I might receive by DHCP an IP address like 10.140.10.100, with the printer on maybe 10.120.50.10. I was thinking about installing the printer on the server so that it could be shared with the workstations. But how does this work? Can I just plug eth1 into the school network and access both LANs? Thanks for any insight, Chris

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• How to send a popup message to unknow computer connected to my WLAN?

  - by Leandro

  Is there any way to send a popup message from a Linux systen to a "random" laptop/tablet/mobile linked to my Wireless network ? For example, if I let my WLAN open and I see a not recognized computer connected to it, is there anyway to send to that device a message ? On the other hand, if I am connected to someone else open network and they may or may not be aware that their network is open, can I send them a message warning that I am accessing their network? Probably for a completely "random" device the answer should be no. But if we restrict to laptops with Win7 or Linux SO is there any service running by default on such systems that allows one to send such popup messages ? PS: I have no practical motivation for this question. This is only a curiosity.

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• Trouble with wireless driver on a Dell Latitude D830

  - by Kevin

  After uninstalling Dell's wireless utility I get a new hardware found dialog that can not find any driver for my wifi card on it's own. I'm running Windows XP Professional Service Pack 3, and I would like to use the default wifi handler since dell's utility does not work with my company's wireless switch. I did try downloading the recommend driver from the dell support site Network Adapter 2 Model Intel(R) PRO/Wireless 3945ABG Network Connection Description [12] Intel(R) PRO/Wireless 3945ABG Network Connection Status Connected

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• Change the order of DNS lookup when connected in the VPN

  - by qwerty2010

  Hi, Using Windows 7 Pro here. I have my LAN network adapter with DNS server 8.8.8.8 (Google's DNS). I also have OpenVPN client to connect to my company's network. If I type "nslookup" while disconnected from the VPN, I get 8.8.8.8 (from my LAN network adapter). If I type "nslookup" while connected in the VPN, I get the DNS IP from my company's network. That makes me think that when connected to the VPN all DNS's resolution are routed first to my company's DNS. How can I change this order, and make the DNS resolution be routed to 8.8.8.8 first, when I'm connected to the VPN? Thank you

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• What is a good, inexpensive, non-host-based printer

  - by Josh Yeager

  I am sick of buying cheap host-based printers that have bloated drivers, randomly fail to print, and won't work over a network. Is it possible to get a good color network printer for under $200 that doesn't have those problems? I don't care if it's laser or inkjet; I don't print enough for the ink cost to matter. I just want something that I can plug into my network, set up sharing on my PCs, and forget about.

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