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• Can Xen be configured to dedicate only one port of a dual-port NIC to a domU?

  - by jamieb

  I'm using CentOS 5.4 on my dom0 with a stock Xen kernel. I'm attempting to use the pciback module to hide some of the Ethernet ports from the host and reserve them for a domU I intend to use for a firewall (process described here). However, when I launch the domU, I get the following error message: Using config file "/etc/xen/firewall". Error: pci: improper device assignment specified: pci: 0000:01:04.0 must be co-assigned to the same guest with 0000:01:06.0, but it is not owned by pciback. lspci gives me the following output: 00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) 01:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 01:06.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 01:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) From the sound of the error message, it seems like I also need to dedicate eth0 (PCI ID 01:04.0) to the domU. Am I correct? If not, what am I doing wrong? Thanks!

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• Ruckus wireless AP and Dell PowerConnect configuration problems

  - by DanielJay

  We are working on trying to get some Ruckus Access Points to work correctly on our network. Currently our network is as follows: VLAN 10 - Servers VLAN 11 – Computers/DHCP VLAN 12 – Voice VLAN 13 – Guest We use Dell PowerConnect 6248P switches for our switches. Port settings are as follows: ZoneDirector 1100 is plugged into this port. Should be accessing the server VLAN and then allowing all other traffic. interface ethernet 1/g2 classofservice trust ip-dscp description 'Ruckus ZoneDirector 1100' switchport mode general switchport general pvid 10 switchport general allowed vlan add 10 switchport general allowed vlan add 11-13 tagged exit Access point is plugged into this port. The port has to be on VLAN 11 in order to get DHCP. interface ethernet 1/g16 classofservice trust ip-dscp description 'Ruckus - IT' switchport mode general switchport general pvid 11 switchport general allowed vlan add 10-12 switchport general allowed vlan add 13 tagged exit If we tag the traffic from the SSID as VLAN 11 data fails. If we leave the SSID tagged as 1 the data flows correctly. Are there problems with passing tagged traffic to untagged ports? We are looking to see what we can do to get the SSID tagged as 11 instead of 1. Any suggestions?

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• how do you add an A record for a root domain

  - by nbv4

  this seems really simple, but I can't figure it out. I'm using xname.org since it's free and I own a bunch of domains spread over a few different registrars. The setup I desire is very simple: one A record that points the bare domain name to my server, plus a wildcard CNAME record pointing all subdomains to the same server. So if the user goes to domain.com it will point them to 285.24.435.75, if they go to www.domain, blah.domain.com, or any other sub domain, they'll get sent to 285.24.435.75. All the examples I read on the internet about setting up A records all have the A record set to a subdomain such as www. WWW is deprecated so I want to have noting to do with it. Currently my xname.org zone looks like this: $TTL 86400 ; Default TTL domain.com. IN SOA ns0.xname.org. nbvfour.gmail.com. ( 2010052503 ; serial 10800 ; Refresh period 3600 ; Retry interval 604800 ; Expire time 10800 ; Negative caching TTL ) $ORIGIN domain.com. IN NS ns2.xname.org. IN NS ns0.xname.org. IN NS ns1.xname.org. @ IN A 65.49.73.148 * IN CNAME domain.com The '@' symbol is something that the godaddy domain interface uses to mean "this root domain', but that may have been specefic to that interface and has no meaning here. Before I had a 'www' entry in the A rcords and it worked in the sense that I could ping 'www.domain.com' and it returned a response, but pinging the root domain 'domain.com' returned "no host found".

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• Cisco ASA user authentication options - OpenID, public RSA sig, others?

  - by Ryan

  My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual deal - basic inside networks with outbound NAT, one primary outside interface with some secondary public IPs in the PAT pool for public-facing services, a couple site-to-site IPSec links to other branches, etc. - and I'm working now on VPN. I have the WebVPN (clientless SSL VPN) working and even traversing the site-to-site links. At the moment I'm leaving a legacy OpenVPN AS in place for thick client VPN. What I would like to do is standardize on an authentication method for all VPN then switch to the Cisco's IPSec thick VPN server. I'm trying to figure out what's really possible for authentication for these VPN users (thick client and clientless). My organization uses Google Apps and we already use dotnetopenauth to authenticate users for a couple internal services. I'd like to be able to do the same thing for thin and thick VPN. Alternatively a signature-based solution using RSA public keypairs (ssh-keygen type) would be useful to identify user@hardware. I'm trying to get away from legacy username/password auth especially if it's internal to the Cisco (just another password set to manage and for users to forget). I know I can map against an existing LDAP server but we have LDAP accounts created for only about 10% of the user base (mostly developers for Linux shell access). I guess what I'm looking for is a piece of middleware which appears to the Cisco as an LDAP server but will interface with the user's existing OpenID identity. Nothing I've seen in the Cisco suggests it can do this natively. But RSA public keys would be a runner-up, and much much better than standalone or even LDAP auth. What's really practical here?

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• OpenVPN with MacOS X Client and same subnets in local and remote net.

  - by Daniel

  I have a homenetwork 192.168.1.0/24 with gteway 192.168.1.1 and a remote network with the same parameters. Now I want to create a OpenVPN tunnel between those networks. I have no problems with Windows, because Windows routes everything to 192.168.1.0/24 except 192.168.1.1 throught the tunnel. On MacOS X however I see the folling line in the Details window: 2010-05-10 09:13:01 WARNING: potential route subnet conflict between local LAN [192.168.1.0/255.255.255.0] and remote VPN [192.168.1.0/255.255.255.0] When I list the routes I get the following: Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.1.1 UGSc 13 3 en1 127 localhost UCS 0 0 lo0 localhost localhost UH 12 3589 lo0 169.254 link#5 UCS 0 0 en1 192.168.1 link#5 UCS 1 0 en1 192.168.1.1 0:1e:e5:f4:ec:7f UHLW 13 17 en1 1103 192.168.1.101 localhost UHS 0 0 lo0 192.168.6 192.168.6.5 UGSc 0 0 tun0 192.168.6.5 192.168.6.6 UH 1 0 tun0 My Interfaces are en1 - My local Wifi network tun0 - The tunnel interface As can be seen from the routes above there is no entry for 192.168.1.0/24 that routes the traffic through the tunnel interface. When I manually route a single IP like 192.168.1.16 over the tunnel gateway 192.168.6.6, this works. Q: How do I set up my routes in MacOS X for the same behaviour as on windows, to route everything except 192.168.1.1 through the tunnel, but leave the default gateway to be my local 192.168.1.1 ?

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• Collect temperature and fan speed with munin from Windows 7 PC?

  - by mfn

  Hi, I'm quite fond of munin and using it also at home to monitor my PCs. What was super-duper easy under Linux is pretty much unsolvable for me under Windows: I'd like to monitor CPU and Motherboard temperatures as well as fan speed. On Linux I'm using lm-sensors and the plugin for munin was basically there. I access already some information from my Windows machine via SNMP (disk space, CPU usage, memory usage); the graphs are simple as is the information exposed via SNMP, but they do their job. But when it comes to temperature and fan speed I'm running against a wall. My research so far resulted in that Windows does not by default provide out of the box ability to retrieve temperature/fan speed data. Third party applications are necessary which have know-how how to communicate with the Motherboard chips. The best I cam up with is that SpeedFan exposes a shared memory interface and there exists a library which hooks into Windows SNMP facility and bridges over to SpeedFans shared memory interface; it's called SFSNMP (site currently down). Unfortunately the library doesn't work, there's a bug report at SpeedFan open about it, but it's currently not moving (although the SFSNMP author is active there) . So, unless that's going to work like anytime soon, are there any alternatives? I'm not found of buying any software to get that feature, given that I take it as granted that my system exposes me the information to properly monitor it, but anyway don't just not answer because of this.

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• Sharp mx2600 driver cannot see all the paper trays

  - by Frank R

  I am wondering if someone might have experienced this problem and have a solution. I have just taken over a network about a month ago so it is hard to know what truly worked and didn't work. However the end users reported that they used to be able to choose the tray they wanted to print from in the printer preferences in the driver for the Sharp MX2600n device then send the print job. Now they only have two trays to choose from instead of the four trays that exist. The only thing I have changed that might relate to this network device is the Admin password on the domain controller. I haven't made any changes to the Sharp device or the driver, until recently when I tired to update the driver for this device but that didn't fix anything. The domain controller is a Server 2008 VM running in Hyper-visor and it is pushing the shared printer out to the domain. I have looked at the web interface to manage the device and I can see all four paper trays in there, however if I try to see the number of trays from the driver interface, I can only see the top two paper trays and there should be four of them. This is the same with the admin account on the server or a workstation inside the domain, also a standard user account see's the same result. I have even tried updating the tray status within the driver to show more trays, but that doesn't help. I am hoping there is someone out there that has experienced this problem and knows a solution.

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• OpenWRT + OpenVPN client forwarding from lan to vpn not working

  - by Dariusz Górecki

  I've OpenWRT router with Backfire 10.03.1-rc3 (arch:brcm 2.6 kernel) I've set up an OpenVPN client connecting my router with workplace lan, and it works nicely, I can connect from router to networks (several) in workplace. My OpenVPN client uci-config looks like: config 'openvpn' 'stream_client' option 'nobind' '1' option 'float' '1' option 'client' '1' option 'reneg_sec' '0' option 'management' '127.0.0.1 31194' option 'explicit_exit_notify' '1' option 'verb' '3' option 'persist_tun' '1' option 'persist_key' '1' list 'remote' 'remote.address.cutted' option 'ca' '/lib/uci/upload/cbid.openvpn.stream_client.ca' option 'key' '/lib/uci/upload/cbid.openvpn.stream_client.key' option 'cert' '/lib/uci/upload/cbid.openvpn.stream_client.cert' option 'enable' '1' option 'dev' 'tun1' I've set the 'STREAM_VPN' Zone to allow in/out traffic, and I've added rules for zone-to-zone lan<-vpn and vpn<-lan config 'zone' option 'name' 'stream_vpn' option 'network' 'stream_vpn' option 'input' 'ACCEPT' option 'output' 'ACCEPT' option 'forward' 'REJECT' config 'forwarding' option 'src' 'lan' option 'dest' 'stream_vpn' config 'forwarding' option 'src' 'stream_vpn' option 'dest' 'lan' And interface config: config 'interface' 'stream_vpn' option 'proto' 'none' option 'ifname' 'tun1' option 'defaultroute' '0' option 'peerdns' '0' Now, from my router everything works nicely, the problem is that I cannot connect from computer inside a lan to hosts in networks provided by vpn connection :/ What I've missed, or what I'm doing wrong? And how can I force using specified DNS when connected to vpn? (I know that sever should use PUSH DNS option, but is PUSHes only routes)

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• backup of TFS with DPM 2007 - different backup times

  - by user46516

  I have DPM set up to back up my TFS server every 30 minutes, the reason being it's a way better interface than the quirky SQL backup interface. I also do a full backup nightly using an SQL maintenance job. My thinking is I would use DPM to restore my databases in case of losing my database and the nightly full backup would be a "just in case" the DPM restore doesn't work. I was thinking a little harder about this set up today and started to think about the fact that the DPM backup of the individual databases happens at different 30 min windows.. i.e. one happens at 13h30, another at 13h34 etc. Would this difference in time be a problem when it comes to restoring the TFS server? If I restore the databases and they are from different times, will this create corruption with pointers in one database pointing to missing items in the other database.. do the databases even rely on each other or are they completely interdependant. Lastly, how would SQL (log) backup cope with this?

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• management network to a network port for additional ones munin and monit

  - by paolo

  management network to a network port for additional ones munin and monit I want to build a separate Netzwek for server management. I have several network cards a linux / debian / ubuntu with computer. Set both network cards sin in the /etc/network/interfaces. # The primary network interface #allow-hotplug eth0 #iface eth0 inet dhcp auto eth0 iface eth0 inet static address 10.0.0.240 netmast 255.255.255.0 network 10.0.0.0 brodacast 10.0.0.255 gateway 10.0.0.254 auto eth1 iface eth1 inet static address 10.0.10.240 netmast 255.255.255.0 network 10.0.10.0 brodacast 10.0.10.255 post-up ip route add 10.0.0.0/24 dev eth0 src 10.0.0.240 table eth0-WAN post-up ip route add default via 10.0.0.254 table eth0-WAN post-up ip route add 10.0.10.0/24 dev eth1 src 10.0.10.240 table eth1-LAN post-up ip route add default via 10.0.10.200 table eth1-LAN post-up ip rule add from 10.0.0.240 table eth0-WAN post-up ip rule add from 10.0.10.240 table eth1-LAN still i adjusted / etc/iproute2/rt_tables and following routes set up in the /etc/network/interfaces I want to have both applications and the network interface separately as munin and monit only on eth1 and not have to eth0. it goes to the reboot but sometimes not always. # Traceroute-i eth1 10.0.10.200 not go what am I doing wrong?

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• Vlans and subinterfaces

  - by Adeodatus

  I've inherited a moderate size network that I'm trying to bring some sanity to. Basically, its 8 public class Cs and a slew of private ranges all on one vlan (vlan1, of course). Most of the network is located throughout dark sites. I need to start separating some of the network. I've changed the ports from the main cisco switch (3560) to the cisco router (3825) and the other remote switches to trunking with dot1q encapsulation. I'd like to start moving a few select subnets to different vlans. To get some of the different services provided on our address space (and to separate customers) on to different vlans, do I need to create a subinterface on the router for each vlan and, if so, how do I get the switch port to work on a specific vlan? Keep in mind, these are dark sites and geting console access is difficult if not impossible at the moment. I was planning on creating a subinterface on the router for each vlan then setting the ports with services I want to move to a different vlan to allow only that vlan. Example of vlan3: 3825: interface GigabitEthernet0/1.3 description Vlan-3 encapsulation dot1Q 3 ip address 192.168.0.81 255.255.255.240 the connection between the switch and router: interface GigabitEthernet0/48 description Core-router switchport trunk encapsulation dot1q switchport mode trunk show interfaces gi0/48 switchport Name: Gi0/48 Switchport: Enabled Administrative Mode: trunk Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Administrative Native VLAN tagging: enabled Voice VLAN: none Administrative private-vlan host-association: none Administrative private-vlan mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk Native VLAN tagging: enabled Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Capture VLANs Allowed: ALL Protected: false Unknown unicast blocked: disabled Unknown multicast blocked: disabled Appliance trust: none So, if the boxen hanging off of gi0/18 on the 3560 are on an unmanaged layer2 switch and all within the 192.168.0.82-95 range and are using 192.168.0.81 as their gateway, what is left to do, especially to gi0/18, to get this working on vlan3? Are there any recommendations for a better setup without taking everything offline?

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• Prevent master to fall back to master after failure

  - by Chrille

  I'm using keepalived to setup a virtual ip that points to a master server. When a failover happens it should point the virtual ip to the backup, and the IP should stay there until I manually enable (fix) the master. The reason this is important is that I'm running mysql replication on the servers and writes should only be on the master. When I failover I promote the slave to master. The master server: global_defs { ! this is who emails will go to on alerts notification_email { [email protected] ! add a few more email addresses here if you would like } notification_email_from [email protected] ! I use the local machine to relay mail smtp_server 127.0.0.1 smtp_connect_timeout 30 ! each load balancer should have a different ID ! this will be used in SMTP alerts, so you should make ! each router easily identifiable lvs_id APP1 } vrrp_instance APP1 { interface eth0 state EQUAL virtual_router_id 61 priority 999 nopreempt virtual_ipaddress { 217.x.x.129 } smtp_alert } Backup server: global_defs { ! this is who emails will go to on alerts notification_email { [email protected] ! add a few more email addresses here if you would like } notification_email_from [email protected] ! I use the local machine to relay mail smtp_server 127.0.0.1 smtp_connect_timeout 30 ! each load balancer should have a different ID ! this will be used in SMTP alerts, so you should make ! each router easily identifiable lvs_id APP2 } vrrp_instance APP2 { interface eth0 state EQUAL virtual_router_id 61 priority 100 virtual_ipaddress { 217.xx.xx.129 } notify_master "/etc/keepalived/notify.sh del app2" notify_backup "/etc/keepalived/notify.sh add app2" notify_fault "/etc/keepalived/notify.sh add app2” smtp_alert }

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• NIC are not advertising Correct Speeds

  - by Squidly

  I have an IBM x336 that is not advertising the proper LINK speeds. One interface is the other is not. I've tried to Force it to 1000/Full but then it just shows link down. I have confirmed the switch is set to auto negotiate like my switches. I have also changed out my Ethernet Cables. I'm at a loss where to look further. I have verified that it will connect at 1G on a different swtich. This also has happened on two different servers on the same switch. This is my output from mii-tool -v for each interface. eth0: negotiated 100baseTx-FD, link ok product info: vendor 00:08:18, model 24 rev 0 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD eth1: negotiated 1000baseT-FD flow-control, link ok product info: vendor 00:08:18, model 24 rev 0 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

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• What kernel modules are required for wi-fi to work?

  - by Leonid Shevtsov

  My custom-built 2.6.32 kernel cannot connect to any WPA-protected network. The kernel includes (probably?) everything that should be needed for wifi, including IPv4 network support (IPv6 is disabled), the ath5k wireless driver (which is used in the generic Ubuntu 2.6.31 kernel) and all crypto APIs. The card is being detected, however, iwlist scan returns wlan0 Failed to read scan data : Network is down and network-manager log says <info> (wlan0): driver supports SSID scans (scan_capa 0x01). <info> (wlan0): new 802.11 WiFi device (driver: 'ath5k') <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/1 <info> (wlan0): now managed <info> (wlan0): device state change: 1 -> 2 (reason 2) <info> (wlan0): bringing up device. <info> (wlan0): preparing device. <info> (wlan0): deactivating device (reason: 2). supplicant_interface_acquire: assertion `mgr_state == NM_SUPPLICANT_MANAGER_STATE_IDLE' failed <info> modem-manager is now available <WARN> default_adapter_cb(): bluez error getting default adapter: The name org.bluez was not provided by any .service files <info> Trying to start the supplicant... <info> (wlan0): supplicant manager state: down -> idle <info> (wlan0): device state change: 2 -> 3 (reason 0) <WARN> nm_supplicant_interface_add_cb(): Unexpected supplicant error getting interface: wpa_supplicant couldn't grab this interface. The exact same configuration works with the generic kernel. Is anything except wifi and crypto api needed for wi-fi to work?

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• rc scripts dependencies

  - by chris

  On a Ubuntu 10.04.1 LTS server install certain services fail to start properly after a reboot. I have a couple of virtual interfaces defined on eth0: /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 172.16.5.240 netmask 255.255.255.0 gateway 172.16.5.1 auto eth0:1 iface eth0:1 inet static address 172.16.5.241 netmask 255.255.255.0 gateway 172.16.5.1 auto eth0:2 iface eth0:2 inet static address 172.16.5.242 netmask 255.255.255.0 gateway 172.16.5.1 auto eth0:3 iface eth0:3 inet static address 172.16.5.243 netmask 255.255.255.0 gateway 172.16.5.1 and so on... The services that try to bind to for example 172.16.5.243 fail during boot, complaining that there is no such IP address. My questions: 1) Are the services started parallel by default? Can I disable that so they run sequentially? 2) Is there a way to define dependencies between rc scripts? I'm only familiar with the defining the order of seqentially started scripts using the numbers in /etc/rc[0-6].d/) Any other fix or workaround appreciated.

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• How to make Virtualbox, OpenVPN, and Win2008 Web R2 like one another?

  - by Aquitaine

  Back with web developer guy wearing net admin hat. Hopefully this is an easy one. We have two servers on a public network at a hosted facility. Server A is our public-facing web server and server B is our database server. Both are running Windows 2008 Server R2 Web Edition. We want Server B isolated from everything except Server A, such that anyone who has to connect to server B goes through the VPN on Server A. It's not perfect since we have no access to do this on the router side, but it's what we've got. We've set up VirtualBox and OpenVPN Access Server on Server A. It has one network interface set to 'NAT' mode, such that OpenVPN gets its IP at 10.0.2.x, and to connect to the OpenVPN interface, I go to the local IP for the Virtualbox network adapter, 192.168.56.x, which works as I configured the appropriate ports using VBoxManage. My question is, do I need to be using Bridged Networking and give the VPN server its own IP, or is there some way to tell the server (either Windows or the Virtualbox OpenVPN) that 'any public connection on the real external IP on port X should be directed to this internal LAN address of 192.168.1.x on port Y'? OpenVPN itself doesn't seem to be aware of the server's real external IP unless we put it in Bridged networking mode; is that necessary or advisable? We're without RRAS since this is Web edition, but I feel like what we're going for is pretty simple. Thanks! Aq

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• Ubuntu 12.04 suddenly cannot connect to WPA2/WPA Personal protected connection. Windows 7 can

  - by d4ryl3

  I have a laptop with Windows 7 and Ubuntu 12.04. I have a Cisco E1200 and when I set it up, it created 2 SSIDs. Let's name them: MyConnection (WPA/WPA2 personal), and MyConnection-Guest (no authentication, guest password entered via web browser). I had no problem connecting to MyConnection before, either in Windows 7 and Ubuntu. But now, I can't access MyConnection on Ubuntu. It just says "connecting..." then disconnects after a while. But I'm able to access the internet (on Ubuntu) when I connect to MyConnection-Guest. MAC filtering is off (even if it's on its MAC address is in the white list). Any idea why I'm unable to connect to MyConnection in Ubuntu? Thanks. Update: My Ubuntu installation can connect to ANY WiFi connection (WPA/WEP/no auth), except for MyConnection. Update2: This is what "The not so easy way" returned: Initializing interface 'eth1' conf '/etc/wpa_supplicant.conf' driver 'default' ctrl_interface 'N/A' bridge 'N/A' Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf' Reading configuration file '/etc/wpa_supplicant.conf' Priority group 0 id=0 ssid='MyConnection' id=1 ssid='MyConnection' id=2 ssid='MyConnection' id=3 ssid='MyConnection' WEXT: cfg80211-based driver detected SIOCGIWRANGE: WE(compiled)=22 WE(source)=21 enc_capa=0xf capabilities: key_mgmt 0xf enc 0xf flags 0x0 netlink: Operstate: linkmode=1, operstate=5 Own MAC address: xx:xx:xx:xx:xx:xx wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0 wpa_driver_wext_set_key: alg=0 key_idx=1 set_tx=0 seq_len=0 key_len=0 wpa_driver_wext_set_key: alg=0 key_idx=2 set_tx=0 seq_len=0 key_len=0 wpa_driver_wext_set_key: alg=0 key_idx=3 set_tx=0 seq_len=0 key_len=0 wpa_driver_wext_set_key: alg=0 key_idx=4 set_tx=0 seq_len=0 key_len=0 ioctl[SIOCSIWENCODEEXT]: Invalid argument Driver did not support SIOCSIWENCODEEXT wpa_driver_wext_set_key: alg=0 key_idx=5 set_tx=0 seq_len=0 key_len=0 ioctl[SIOCSIWENCODEEXT]: Invalid argument Driver did not support SIOCSIWENCODEEXT wpa_driver_wext_set_countermeasures RSN: flushing PMKID list in the driver Setting scan request: 0 sec 100000 usec WPS: UUID based on MAC address - hexdump(len=16): 16 3b d8 47 9e 24 50 89 96 16 6d 66 35 f3 58 37 EAPOL: SUPP_PAE entering state DISCONNECTED EAPOL: Supplicant port status: Unauthorized EAPOL: KEY_RX entering state NO_KEY_RECEIVE EAPOL: SUPP_BE entering state INITIALIZE EAP: EAP entering state DISABLED EAPOL: Supplicant port status: Unauthorized EAPOL: Supplicant port status: Unauthorized Added interface eth1

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• Creating Routes using the second NIC in the box

  - by Aditya Sehgal

  OS: Linux I need some advice on how to set up the routing table. I have a box with two physical NIC cards eth0 & eth1 with two associated IPs IP1 & IP2 (both of the same subnet). I need to setup a route which will force all messages from IP1 towards IP3 (of the same subnet) to go via IP2. I have a raw socket capture program listening on IP2 (This is not for malicious use). I have set up the routing table as Destination Gateway Genmask Flags Metric Ref Use Iface IP3 IP2 255.255.255.255 UGH 0 0 0 eth1 If I try to specify eth0 while adding the above rule, I get an error "SIOCADDRT: Network is unreachable". I understand from the manpage of route that if the GW specified is a local interface, then that would be use as the outgoing interface. After setting up this rule, if i do a traceroute (-i eth0), the packet goes first to the default gateway and then to IP3. How do I force the packet originating from eth0 towards IP3 to first come to IP2. I cannot make changes to the routing table of the gateway. Please suggest.

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• Why is Apache htdigest authentication failing in IE10 on Windows 8?

  - by Kevin Fodness

  One of our developers reported that for the past week or two, the htdigest authentication that we have set up on our test sites in Apache is not working in IE10 on Windows 8. It's fine on IE10 on Windows 7, and it's fine on Chrome on Windows 8. The specific behavior is: Navigate to site with htdigest authentication enabled, username and password form pops up, enter correct username and password, and the username and password box pops up again. Potentially useful information: All patches applied on Windows 8 box No additional software on Windows 8 box other than Outlook 2013 and a browser test suite (Chrome, Firefox, Opera, Chrome Canary, Opera Next) Win8 running in a virtual machine on Xen Same behavior can be replicated on Win8/IE10 on Browserstack.com Server running Ubuntu 10.10 with Apache 2.2.16 This feels like a patch was applied to the Windows box that broke digest authentication for IE10 on Win8 (box configured for automatic updates). However, without knowing a specific date I can't necessarily nail this down. Has anyone else experienced this problem? EDIT: This problem only happens in the "Metro" interface, not when running IE10 in desktop mode. As of a few weeks ago, it worked fine even in the "Metro" interface.

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• Postfix "loops back to myself" error on relay to another IP address on same machine

  - by Nic Wolff

  I'm trying to relay all mail for one domain "ourdomain.tld" from Postfix running on port 2525 of one interface to another SMTP server running on port 25 of another interface on the same machine. However, when a message is received for that domain, we're getting a "mail for loops back to myself" error. Below are netstat and postconf, the contents of our /etc/postfix/transport file, and the error that Postfix is logging. (The high bytes of each IP address are XXXed out.) Am I missing something obvious? Thanks - # netstat -ln -A inet Proto Recv-Q Send-Q Local Address Foreign Address State ... tcp 0 0 XXX.XXX.138.209:25 0.0.0.0:* LISTEN tcp 0 0 XXX.XXX.138.210:2525 0.0.0.0:* LISTEN # postconf -d | grep mail_version mail_version = 2.8.4 # postconf -n alias_maps = hash:/etc/aliases allow_mail_to_commands = alias,forward bounce_queue_lifetime = 0 command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 default_privs = nobody default_process_limit = 200 html_directory = no inet_interfaces = XXX.XXX.138.210 local_recipient_maps = local_transport = error:local mail delivery is disabled mail_owner = postfix mailbox_size_limit = 0 mailq_path = /usr/bin/mailq manpage_directory = /usr/local/man message_size_limit = 10240000 mydestination = mydomain = ourdomain.tld myhostname = ourdomain.tld mynetworks = XXX.XXX.119.0/24, XXX.XXX.138.0/24, XXX.XXX.136.128/25 myorigin = ourdomain.tld newaliases_path = /usr/bin/newaliases queue_directory = /var/spool/postfix readme_directory = /etc/postfix recipient_delimiter = + relay_domains = ourdomain.tld relay_recipient_maps = sample_directory = /etc/postfix sendmail_path = /usr/sbin/sendmail setgid_group = postdrop smtpd_authorized_verp_clients = $mynetworks smtpd_recipient_limit = 10000 transport_maps = hash:/etc/postfix/transport unknown_local_recipient_reject_code = 450 # cat /etc/postfix/transport ourdomain.tld relay:[XXX.XXX.138.209]:25 # tail -f /var/log/maillog ... Aug 2 23:58:36 va4 postfix/smtp[9846]: 9858A758404: to=<nicwolff@... >, relay=XXX.XXX.138.209[XXX.XXX.138.209]:25, delay=1.1, delays=0.08/0.01/1/0, dsn=5.4.6, status=bounced (mail for [XXX.XXX.138.209]:25 loops back to myself)

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• What kernel modules are required for wi-fi to work?

  - by Leonid Shevtsov

  My custom-built 2.6.32 kernel cannot connect to any WPA-protected network. The kernel includes (probably?) everything that should be needed for wifi, including IPv4 network support (IPv6 is disabled), the ath5k wireless driver (which is used in the generic Ubuntu 2.6.31 kernel) and all crypto APIs. The card is being detected, however, iwlist scan returns wlan0 Failed to read scan data : Network is down and network-manager log says <info> (wlan0): driver supports SSID scans (scan_capa 0x01). <info> (wlan0): new 802.11 WiFi device (driver: 'ath5k') <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/1 <info> (wlan0): now managed <info> (wlan0): device state change: 1 -> 2 (reason 2) <info> (wlan0): bringing up device. <info> (wlan0): preparing device. <info> (wlan0): deactivating device (reason: 2). supplicant_interface_acquire: assertion `mgr_state == NM_SUPPLICANT_MANAGER_STATE_IDLE' failed <info> modem-manager is now available <WARN> default_adapter_cb(): bluez error getting default adapter: The name org.bluez was not provided by any .service files <info> Trying to start the supplicant... <info> (wlan0): supplicant manager state: down -> idle <info> (wlan0): device state change: 2 -> 3 (reason 0) <WARN> nm_supplicant_interface_add_cb(): Unexpected supplicant error getting interface: wpa_supplicant couldn't grab this interface. The exact same configuration works with the generic kernel. Is anything except wifi and crypto api needed for wi-fi to work?

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• Multi-WAN bonding across different media

  - by Tom O'Connor

  I've recently been thinking again about a product that Viprinet provide, basically they've got a pair of routers, one that lives in a datacentre, Their VPN Multichannel Hub and the on-site hardware, their VPN multichannel routers They've also got a bunch of interface cards (like HWICs) for 3G, UMTS, Ethernet, ADSL and ISDN adapters. Their main spiel seems to be bonding across different media. It's something that I'd really like to use for a couple of projects, but their pricing is really quite extreme, the hub is about 1-2k, the routers are 2-6k, and the interface modules are 200-600 each. So, what I'd like to know is, is it possible with a couple of stock Cisco routers, 28xx or 18xx series, to do something similar, and basically connect a bunch of different WAN ports, but have it all presented neatly as one channel back to the internet, with seamless (or nearly) failover if one of the WAN interfaces should fail. Basically, If i got 3x 3G to ethernet modems, and each on a different network, I'd like to be able to loadbalance/bond across all of them, without having to pay Viprinet for the privilege. Does anyone know how I'd go about configuring something for myself, based around standard protocols (or vendor specific ones), but without actually having to buy the Viprinet hardware?

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• Routing subnet over GRE tunnel

  - by eMgz

  Hi, Im trying to configure a GRE over IPSec connection between two subnets. The IPSec tunnel is opened and now I want to add a GRE tunnel over it: ip tunnel add GRE01 mode gre remote 10.244.0.1 local 10.244.245.32 ttl 255 ip link set GRE01 up ip addr add 10.244.248.126 dev GRE01 ip route add 10.244.248.125 dev GRE01 Now I have an interface GRE01 (ifconfig): GRE10 Link encap:UNSPEC HWaddr <h_addr> inet addr:10.244.248.126 P-t-P:10.244.248.126 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MTU:1476 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) And the following routes (ip route list): 10.244.248.125 dev GRE10 scope link <pub_subnet> dev eth0 proto kernel scope link src <pub_ip> default via <pub_gw> dev eth0 metric 100 As a last step, I need now to route my subnet over the tunnel: ip route add 10.245.1.224/28 10.244.248.125 However, I am getting the error Error: either "to" is duplicate, or "10.244.248.125" is a garbage. So, what I didn't understand is why I can't route my subnet over the tunnel, once the only route I have there says that it should route the tunnel IP over the GRE01 interface. Any hint? Thanks.

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• Adding Netem Filter Rules

  - by fontsix

  iam new in programming and using linux. My Question is, is it possible to add Netem Filter Rules later ? I want to create an PHP-Interface for Netem and I don't know how much filters were required. This should be some kind of dynamically. In Example : A user with a static IP starts an Netem Command (Latency) with PHP Interface this means these five command werde executed by php in the first step $classid = 11; $handle = 10; "sudo tc qdisc add dev eth0 handle 1: root htb"; "sudo tc class add dev eth0 parent 1: classid 1:1 htb rate 100Mbps"; "sudo tc class add dev eth0 parent 1:1 classid 1:$classid htb rate 100Mbps"; "sudo tc qdisc add dev eth0 parent 1:$classid handle $handle: netem delay 100ms"; "sudo tc filter add dev eth0 protocol ip parent 1:0 prio 3 u32 match ip dst $dest flowid 1:$classid"; Now, if there would be a second user who wants to use Netem independent of the first user, i only want to execute the last 3 commands, like "sudo tc class add dev eth0 parent 1:1 classid 1:$classid htb rate 100Mbps"; "sudo tc qdisc add dev eth0 parent 1:$classid handle $handle: netem delay 100ms"; "sudo tc filter add dev eth0 protocol ip parent 1:0 prio 3 u32 match ip dst $dest flowid 1:$classid"; There is an Algorithmus for increasing variables $classid and $handle. This should work. Now my Question: Is it possible only to add these 3 commands to add a new class with new qdisc and a new filter rule ? Or how can i realize it ? The Apache Error_log tells me "sh: line 1: flowid: command not found" but i can't find any mistake. I hope you could help Best regards fontsix

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• Why can't I bind to 127.0.0.1 on Mac OS X?

  - by Noah Lavine

  Hello, I'm trying to set up a simple web server on Mac OS X, and I keep getting an error when I run bind. Here's what I'm running (this transcript uses GNU Guile, but just as a convenient interface to posix). (define addr (inet-aton "127.0.0.1")) ; get internal representation of 127.0.0.1 (define sockaddr (make-socket-address AF_INET addr 8080)) ; make a struct sockaddr (define sock (socket PF_INET SOCK_STREAM 0)) ; make a socket (bind sock sockaddr) ; bind the socket to the address That gives me the error In procedure bind: can't assign requested address. So I tried it again allowing any address. (define anyaddr (make-socket-address AF_INET INADDR_ANY 8080)) ; allow any address (bind sock anyaddr) And that works fine. But it's weird, because ifconfig lo0 says lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 So the loopback device is assigned to 127.0.0.1. So my question is, why can't I bind to that address? Thanks. Update: the output of route get 127.0.0.1 is route to: localhost destination: localhost interface: lo0 flags: <UP,HOST,DONE,LOCAL> recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire 49152 49152 0 0 0 0 16384 0

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