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• Force10 S60 remote management

  - by StaringSkyward

  We've got a Force10 S60 switch to replace an older Cisco. I can't find a way to give the switch itself an IP address on the local VLAN so I can ssh to it. The config guide talks about using either a management interface on a separate management network or dedicating e.g. a gigabit port as a management port with a dedicated IP address. Ideally I would like to do what we do currently with the Cisco switches, which is in effect give the entire switch an IP so it can be reached from any host on the same VLAN without having to use up a physical port on the switch or physically connect the management port to another device. Is this possible with the S60 and if so, how would you give it, say the address 10.0.1.1 in vlan 10 (10.0.1.1/24)? Thanks!!!

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• E-mail addresses with plus sign in MS Exchange

  - by Wilson

  Many users like to use e-mail address in the format "[user]+[tag]@[domain]" to facilitate local filtering of incoming messages. The semantics of that is that the message should be delivered to the mailbox belonging to "user"; the user would advertise his/her address with different tags to different potential senders and would then be able to filter incoming messages according to sender (and also to track who got the e-mail address from where). The question is: is it possible to get MS Exchange (2007) to deliver messages in this format properly? If so, how exactly? Internet searches seem to imply it is not a possibility...

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• DNS A vs NS record

  - by Tiddo

  I'm trying to understand DNS a bit better, but I still don't get A and NS records completely. As far as I understood, the A record tells which IP-address belongs to a (sub) domain, so far it was still clear to me. But as I understood, the NS record tells which nameserver points belongs to a (sub) domain, and that nameserver should tell which IP-address belongs to a (sub) domain. But that was already specified in the A record in the same DNS file. So can someone explain to me what the NS records and nameservers exactly do, because probably I understood something wrong. edit: As I understand you correctly, a NS record tells you were to find the DNS server with the A record for a certain domain, and the A record tells you which ip-address belongs to a domain. But what is the use of putting an A and an NS record in the same DNS file? If there is already an A record for a certain domain, then why do you need to point to another DNS server, which would probably give you the same information?

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• Cannot mount USB 3 harddrive

  - by Thijs

  I cannot mount an USB 3 harddrive. When looking at dmesg I got the following error: [ 96.463269] usb 3-2.1: >new low-speed USB device number 10 using xhci_hcd [ 96.485777] usb 3-2.1: >New USB device found, idVendor=046d, idProduct=c025 [ 96.485787] usb 3-2.1: >New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 96.485792] usb 3-2.1: >Product: USB-PS/2 Optical Mouse [ 96.485797] usb 3-2.1: >Manufacturer: B16_b_02 [ 96.486118] usb 3-2.1: >ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes [ 96.490149] input: B16_b_02 USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2.1/3-2.1:1.0/input/input12 [ 96.490500] hid-generic 0003:046D:C025.0003: >input,hidraw0: USB HID v1.10 Mouse [B16_b_02 USB-PS/2 Optical Mouse] on usb-0000:00:14.0-2.1/input0 [ 114.088984] usb 3-2.3: >new high-speed USB device number 11 using xhci_hcd [ 114.105041] usb 3-2.3: >New USB device found, idVendor=13fd, idProduct=1618 [ 114.105051] usb 3-2.3: >New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 257.531777] usb 3-2.3: >USB disconnect, device number 11 [ 258.513912] usb 3-2.4: >new high-speed USB device number 12 using xhci_hcd [ 258.514046] usb 3-2.4: >Device not responding to set address. [ 258.717649] usb 3-2.4: >Device not responding to set address. [ 258.921203] usb 3-2.4: >device not accepting address 12, error -71 [ 258.937388] hub 3-2:1.0: >unable to enumerate USB device on port 4 I have tried to mount the drive on ubuntu-12.04 and it mounts just fine.

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• How can I remove the Unity Launcher?

  - by Magnus Hoff

  I'm running Ubuntu Netbook. With the recent upgrade to 10.10 I was excited about the Application Menu/the global menu bar and its implications for screen real estate. Unfortunately, the Unity Launcher on the left hand side of the screen takes more valuable space away than the new menu bar gives. Is there any way to get rid of the Launcher? Alternatives I would be satisfied with include: Not having the Launcher at all Having the Launcher hide automatically Having applications open on top of the Launcher (not next to it) (edit:) Note that I am specifically looking for a way to keep the global menubar, while getting rid of the Launcher.

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• Rewrite URL based off of IP on OpenWRT

  - by Scott

  We are running OpenWRT on a WRT54GL. I have been looking for an answer to this, but I can't seem to figure out what to search for, if its possible, or what combination of programs to use. I want to be able to redirect a HTTP request from a WiFi device based off of their MAC address. This should all be transparent to the device. Basically we are trying to redirect any non-registered devices to a website to register the device (at this point, we would push a new config to the router that would allow this MAC address "full access"). Once a device is registered, it will be redirected to a transparent squid proxy server on another machine for caching/blocking certain sites. I looked at tinyproxy - popilo which redirects but I won't have the MAC address to know if its registered or not. Any help (google suggestions, programs, anything!) would be very much appreciated!

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• Sharing Internet Connection using an ad-hoc wifi network

  - by Apps

  I've installed a WiFi Adapter in my Windows XP PC and created an ad-hoc network. I am able to connect to the network through my iPod Touch. On the same PC I have a LAN connection to the Internet. I need to share this internet connection to my iPod too. The problem is Windows did not assign an IP Address (even though assign IP address automatically is selected) to this WiFi network. When I tried to share the Internet connection, I got a message that LAN Network Adapter's IP address will be changed to 192.168.1.1. But if this happens I will not be able to connect to other devices/servers in my LAN Network. How do I share the Internet connection through WiFi?

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• Does sending e-mail in the name of customers increase the risk of being marked as spammer?

  - by Adrian Grigore

  Hi, We are developing a SaaS website application that lets users send invoices to their clients. Ideally, these e-mails should appear to be originating from our customers, so the sender e-mail address domain will not match the reverse IP entry for our server. In effect we would be forging their e-mail address, but of course with their consent. Will that result in a higher probability of being marked as a spammer / their e-mails being marked as spam? If yes, how bad is the penalty? And what about people who have an e-mail address originating form an SPF-enabled domain? I guess it should be the majority of the big e-mail providers.

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• Users not getting ip when connected through wifi,but wired connection getting ip in ddwrt router

  - by Kevin Parker

  I am having DD-WRT v24-sp2(05/08/11) running on Asus RT n 13 u B1 router,with dhcp on. But users not able to connect through wifi...its showing obtaining ip address and disconnects there after. Wired Devices are getting ip address and able to access internet.Wifi was working till yesterday,but all of a sudden it stopped working. on the ddwrt controlpanelsystem information under Wireless Clients mac address of clients that are trying to connect are appearing but soon it disappears. but no such issue with wired clients. Can any one please help me in fixing this..

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• Proxmox 31 + KVM routing + IP subnet + csf

  - by KeyJey

  We have proxmox 3.1 server in netzner with routuing network and IP subnet block. We want to implement csf firewall without interfering the traffic of the KVM VMs, what would be the easiest way? We readed that we should add this lines to /etc/csf/csfpost.sh: iptables -A FORWARD -d 144.76.223.155 -j ACCEPT iptables -A FORWARD -d 144.76.223.156 -j ACCEPT iptables -A FORWARD -d 144.76.223.157 -j ACCEPT iptables -A FORWARD -d 144.76.223.158 -j ACCEPT iptables -A FORWARD -d 144.76.223.159 -j ACCEPT iptables -A FORWARD -d 144.99.183.323 -j ACCEPT But when we enable csf the ping breaks, this is the network config (IPs are modified): auto lo iface lo inet loopback # device: eth0 auto eth0 iface eth0 inet static address 144.76.166.100 netmask 255.255.255.255 pointopoint 144.76.183.97 gateway 144.76.183.97 # for single IPs auto vmbr0 iface vmbr0 inet static address 144.76.166.100 netmask 255.255.255.255 bridge_ports none bridge_stp off bridge_fd 0 up ip route add 144.99.183.323/32 dev vmbr0 # for a subnet auto vmbr1 iface vmbr1 inet static address 144.76.166.100 netmask 255.255.255.248 bridge_ports none bridge_stp off bridge_fd 0 Thanks in advanced ! :)

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• Is catching general exceptions really a bad thing?

  - by Bob Horn

  I typically agree with most code analysis warnings, and I try to adhere to them. However, I'm having a harder time with this one: CA1031: Do not catch general exception types I understand the rationale for this rule. But, in practice, if I want to take the same action regardless of the exception thrown, why would I handle each one specifically? Furthermore, if I handle specific exceptions, what if the code I'm calling changes to throw a new exception in the future? Now I have to change my code to handle that new exception. Whereas if I simply caught Exception my code doesn't have to change. For example, if Foo calls Bar, and Foo needs to stop processing regardless of the type of exception thrown by Bar, is there any advantage in being specific about the type of exception I'm catching?

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• Exchange 2003 - Keep user's mailbox but disable account and prevent new emails

  - by molecule

  Hi all, Just wanted to know what's your take on this... A user has left the company but may return in future. I would like to disable his AD account, archive all his emails, keep his mailbox and prevent new emails from being sent to him. What's the "best practice" method of doing this? Please enlighten and thanks in advance. What I would do: Reset AD password Change SMTP address - leading to NDRs if new emails are sent to his/her previous address Logon as him/her and archive emails Disable AD account Hide address from GAL

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• How To Disable Individual Plug-ins in Google Chrome

  - by The Geek

  Have you ever wondered how to disable useless or insecure browser plug-ins in Google Chrome? Here’s the lowdown on how to get rid of Java, Acrobat, Silverlight, and the rest of the plugins you probably want to get rid of. Disabling Plugins in Google Chrome If you head to about:plugins in your address bar, you’ll probably see a list of plugins, but won’t be able to disable them yet. What you’ll need to do is switch over to the Dev channel of Chrome, which gives you access to all the latest features—though you might be warned that sometimes the dev channel might be less stable than the release or beta channels. Ready to proceed? Head to the Dev Channel page, and then click the link to run the installer. You’ll be prompted to restart Chrome when you’re done. Note that Mac and Windows users can both run an installer to switch. Linux users will have to install a package. Note: Once you’ve switched to the Dev channel, you can’t really switch to the stable channel. You’ll have to uninstall Chrome and then reinstall the regular version. Now that you’ve switched to the dev channel and restarted your browser, head to about:plugins in the address bar, and then just disable each plugin you really don’t need. Plugins you can generally live without?  Java, Acrobat, Microsoft Office, Windows Presentation Foundation, Silverlight. These will be on a case-by-case basis, of course, but the vast majority of large websites don’t require any of those. When it comes right down to it, the only plugin that most people require is Flash… and leave the “Default Plug-in” alone too. Special thanks to @jordanconway for pointing out the solution. Similar Articles Productive Geek Tips Disable YouTube Comments while using ChromeHow to Make Google Chrome Your Default BrowserSubscribe to RSS Feeds in Chrome with a Single ClickAdd Notes to Google Notebook from ChromeAccess Google Chrome’s Special Pages the Easy Way TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Office 2010 Product Guides Google Maps Place marks – Pizza, Guns or Strip Clubs Monitor Applications With Kiwi LocPDF is a Visual PDF Search Tool Download Free iPad Wallpapers at iPad Decor Get Your Delicious Bookmarks In Firefox’s Awesome Bar

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• SSH as root using public key still prompts for password on RHEL 6.1

  - by Dean Schulze

  I've generated rsa keys with cygwin ssh-keygen and copied them to the server with ssh-copy-id -i id_rsa.pub [email protected].address I've got the following settings in my /etc/ssh/sshd_config file RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys PermitRootLogin yes When I ssh [email protected].address it still prompts for a password. The output below from /usr/sbin/sshd -d says that a matching keys was found in the .ssh/authorized_keys file, but it still requires a password from the client. I've read a bunch of web postings about permissions on files and directories, but nothing works. Is it possible to ssh with keys in RHEL 6.1 or is this forbidden? The debug output from ssh and sshd is below. $ ssh -v [email protected].address OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012 debug1: Connecting to my.ip.address [my.ip.address] port 22. debug1: Connection established. debug1: identity file /home/dschulze/.ssh/id_rsa type 1 debug1: identity file /home/dschulze/.ssh/id_rsa-cert type -1 debug1: identity file /home/dschulze/.ssh/id_dsa type 2 debug1: identity file /home/dschulze/.ssh/id_dsa-cert type -1 debug1: identity file /home/dschulze/.ssh/id_ecdsa type -1 debug1: identity file /home/dschulze/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH_5* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 9f:00:e0:1e:a2:cd:05:53:c8:21:d5:69:25:80:39:92 debug1: Host 'my.ip.address' is known and matches the RSA host key. debug1: Found key in /home/dschulze/.ssh/known_hosts:3 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/dschulze/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering DSA public key: /home/dschulze/.ssh/id_dsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Trying private key: /home/dschulze/.ssh/id_ecdsa debug1: Next authentication method: password Here is the server output from /usr/sbin/sshd -d [root@ga2-lab .ssh]# /usr/sbin/sshd -d debug1: sshd version OpenSSH_5.3p1 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-d' debug1: Bind to port 22 on 0.0.0.0. Server listening on 0.0.0.0 port 22. debug1: Bind to port 22 on ::. Server listening on :: port 22. debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 Connection from 172.60.254.24 port 53401 debug1: Client protocol version 2.0; client software version OpenSSH_6.1 debug1: match: OpenSSH_6.1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.3 debug1: permanently_set_uid: 74/74 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr hmac-md5 none debug1: kex: server->client aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user root service ssh-connection method none debug1: attempt 0 failures 0 debug1: PAM: initializing for "root" debug1: userauth-request for user root service ssh-connection method publickey debug1: attempt 1 failures 0 debug1: test whether pkalg/pkblob are acceptable debug1: PAM: setting PAM_RHOST to "172.60.254.24" debug1: PAM: setting PAM_TTY to "ssh" debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: trying public key file /root/.ssh/authorized_keys debug1: fd 4 clearing O_NONBLOCK debug1: matching key found: file /root/.ssh/authorized_keys, line 1 Found matching RSA key: db:b3:b9:b1:c9:df:6d:e1:03:5b:57:d3:d9:c4:4e:5c debug1: restore_uid: 0/0 Postponed publickey for root from 172.60.254.24 port 53401 ssh2 debug1: userauth-request for user root service ssh-connection method publickey debug1: attempt 2 failures 0 debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: trying public key file /root/.ssh/authorized_keys debug1: fd 4 clearing O_NONBLOCK debug1: matching key found: file /root/.ssh/authorized_keys, line 1 Found matching RSA key: db:b3:b9:b1:c9:df:6d:e1:03:5b:57:d3:d9:c4:4e:5c debug1: restore_uid: 0/0 debug1: ssh_rsa_verify: signature correct debug1: do_pam_account: called Accepted publickey for root from 172.60.254.24 port 53401 ssh2 debug1: monitor_child_preauth: root has been authenticated by privileged process debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: ssh_gssapi_storecreds: Not a GSSAPI mechanism debug1: restore_uid: 0/0 debug1: SELinux support enabled debug1: PAM: establishing credentials PAM: pam_open_session(): Authentication failure debug1: Entering interactive session for SSH2. debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 16384 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype [email protected] want_reply 0 debug1: server_input_channel_req: channel 0 request pty-req reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug1: session_pty_req: session 0 alloc /dev/pts/1 ssh_selinux_setup_pty: security_compute_relabel: Invalid argument debug1: server_input_channel_req: channel 0 request shell reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req shell debug1: Setting controlling tty using TIOCSCTTY. debug1: Received SIGCHLD. debug1: session_by_pid: pid 17323 debug1: session_exit_message: session 0 channel 0 pid 17323 debug1: session_exit_message: release channel 0 debug1: session_pty_cleanup: session 0 release /dev/pts/1 debug1: session_by_channel: session 0 channel 0 debug1: session_close_by_channel: channel 0 child 0 debug1: session_close: session 0 pid 0 debug1: channel 0: free: server-session, nchannels 1 Received disconnect from 172.60.254.24: 11: disconnected by user debug1: do_cleanup debug1: PAM: cleanup debug1: PAM: deleting credentials

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• Ubuntu 12.10 Unity and Gnome not showing correctly after log in

  - by Luis Rodriguez

  Hello Ubuntu community. Since last Saturday when I was about to log into my ubuntu session as always using Unity interface, I came across with something that never happened to me before. When I logged in, the screen only showed the Desktop wallpaper but neither the bar from the top screen neither the dash bar from the left side appear, and after a few minutes of being logged in, I found myself being spammed with Ubuntu errors windows, over and over again. I logged out using ctrl+alt+del and tried my Gnome sessio. But I got exactly the same problem. I'm only able to use Gnome Classic and Classic (No Effects) Can anybody help? Hope a reply soon, and thanks in advance.

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• AWN displaying window icons even when Display Launchers Only selected

  - by EmmyS

  I'm using AWN with the DockbarX applet.I have Display Launchers Only checked in the awn dock properties, but I'm still getting window icons displaying for certain apps when they're open. Any ideas? Here's a screenshot, note the Firefox icon at the top of the bar (shaded icon) which is part of the DockbarX applet,then note it displaying again at the bottom of the bar (indicating an open window.) You can see from the Launchers list in the dock properties that it isn't in fact a launcher. (The Yahoo and Gmail launchers are standalone Prism apps, they don't use the FF Prism extension. And if I mouse over the bottom FF icon, it does display the title of the open Firefox window, not anything using Prism.) Any ideas?

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• Installed nvidia driver, activated it, and now Unity is gone. No bars, menus, nothing

  - by Noel

  I installed the nvidia driver (installed the ubuntu-x-swat ones, updated them, got the updates for them, installed bumblebee. I restarted everytime I did those steps, so no, i don't simply need to 'restart X'. I tried to run things using bumblebee, but bumblebee was like "can't access GPU driver". So I ran nvidia-settings, it said the drivers weren't in use, so I ran "sudo nvidia-xconfig", then restarted. Now, my login screen looks differently than it did before: it asks me if I want to load: "GNOME, GNOME - no effects, Cairo Dock - GNOME, System Default, or Ubuntu" when I log in, but WORST OF ALL: i no longer have any kind of GNOME/unity GUI. There are no title bars above any windows, no close/minimize/maximize buttons. The unity bar is gone, and will not show up when I call it. And the top status bar is also no longer there.

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• The menu in the titlebar disappears in 12.10

  - by kinsago

  When running various programs (as I write this, with Chrome & Evolution) I move my mouse to the title bar to access the menu. The menu only seems to appear if I target the buttons to the left. When I move the mouse off the buttons (but still on the title bar) to select a menu then most times the menu disappears. It would seem this only happens on of my displays (of which I have 2) and it is the display that has the unity menu on it. Any ideas?

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• KVM Guest not reachable from host

  - by Paul

  Hello, I'm running Ubuntu server 9.10, installed KVM etc. Created the bridge network following instructions on help.ubuntu.com/community/KVM/Networking Created a windows 2008 guest using virt-install command line (using virt-manager GUI from a remote Ubuntu desktop would not let me select the ISO location). I can however use a remote virt-manager to connect to the guest and complete the windows install. Within windows 2008 I changed the IP address but cannot ping from outside world. The bridge network appears fine - I'm not sure what else to look at! Here is the interfaces file: The loopback network interface auto lo iface lo inet loopback The primary network interface auto eth0 iface eth0 inet manual # auto br0 iface br0 inet static address 60.234.64.50 netmask 255.255.255.248 network 60.234.0.0 broadcast 60.234.0.255 gateway 60.234.64.49 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0 auto eth1 iface eth1 inet static address 192.168.12.2 netmask 255.255.255.0 broadcast 192.168.12.255 The ip of the windows server is 60.234.64.52 What else should I check? Regards Paul.

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• samba share not on network after upgrading to Ubuntu 12.04LTS.

  - by Sylvain Huard

  I just upgraded an old Ubuntu box to 12.04LTS (machine named A-Ubuntu). This is an upgrade not a format re-install. All the accounts and config were preserved. The basic setup is a local network with 2 Ubuntu machines (let say A-Ubuntu, B-Ubuntu) and a MAC (C-MAC). Before the upgrade, all of them could see each other by their names not only the IP address. The local network has a D-Link Router where everybody is connected with RJ-45 wired etherenet (not wi-fi). Since the A-Ubuntu upgrade, we can't see this machine name on the Network and its name is not on machine list in the D-Link router anymore. We can see it's IP address only. I can't access A-Ubuntu from the other two by its name but I can ping it with its address (192.168.0.109). From A-Ubuntu, I can connect and see the shared samba folders on B-Ubuntu and C-MAC. But from B-Ubuntu and C-MAc, I can't connect to A-Ubuntu. Correct me if I'm wrong but this tells me that Samba should be fine and the real problem is that A-Ubuntu does not advertise its name on the Network so the D-Link does not have it in its table so nobody else finds it. After a lot of googling, I see that it is the job of avahi and mdns to do so. Those packages are running, I checked multiple config files for samba, avahi, mdns to see as if it is like the examples on the WEB and also similar to what I find on the working B-Ubuntu machine. This is the same. I did multiple service restart with samba, avahi, remove the firewall to make sure it does not block the hostname broadcast. I rebooted multiple time to make sure the update I was making were effective. Still, Can't see the A-Ubuntu name on the network. Any idea what it can be?, Where to look next?

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• Delivering from Postfix to Exchange

  - by Van Gale

  I have someone with two domains, a.com and b.com. a.com is running a postfix server on the mx host for the domain and I have total control of the server. b.com is running an exchange server on the mx host for the domain and I do not have any control of this server. They have been using b.com as their primary mail address and use the exchange calender with outlook. They want all the same functionality but want to start using a.com as primary mail address. I opened up postfix to allow relay from the ip address of the exchange server and hopefully that's enough from the outgoing side. For delivery though what can I do to forward all incoming emails to the exchange server? I have some aliases defined in /etc/aliases that should take higher priority.

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• Why is my eth0 getting a dynamic ip when it is configured to be static?

  - by sdek

  For some reason our office linux box is being assigned an ip address via dhcp and I don't know why. What is confusing to me is that when I check system-config-network it shows that my eth0 is setup to be a static ip address. And /etc/sysconfig/network-scripts/ifcfg-eth0 also shows it is setup to be a static ip, yet it is getting a different ip address than the one specified in the ifcfg-eth0. Let me know if you have any suggestions on or ideas on where I can look next. Here are a few details that might help you figure out what an idiot I am :) Fedora 11 Router in front of this box is running dhcp, starting at 10.42.1.100 This box is configured to be 10.42.1.50 (at least I think it is!), subnet 255.255.255.0 (which is same as the router's lan subnet) Instead of having the static IP, this box is getting assigned 10.42.1.100. Here are the ifcfg-eth0 details DEVICE=eth0 BOOTPROTO=none ONBOOT=yes TYPE=Ethernet USERCTL=no NM_CONTROLLED=no NETMASK=255.255.255.0 IPADDR=10.42.1.50 GATEWAY=10.42.1.1

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• Why is testing MVC Views frowned upon?

  - by Peter Bernier

  I'm currently setting the groundwork for an ASP.Net MVC application and I'm looking into what sort of unit-tests I should be prepared to write. I've seen in multiple places people essentially saying 'don't bother testing your views, there's no logic and it's trivial and will be covered by an integration test'. I don't understand how this has become the accepted wisdom. Integration tests serve an entirely different purpose than unit tests. If I break something, I don't want to know a half-hour later when my integration tests break, I want to know immediately. Sample Scenario : Lets say we're dealing with a standard CRUD app with a Customer entity. The customer has a name and an address. At each level of testing, I want to verify that the Customer retrieval logic gets both the name and the address properly. To unit-test the repository, I write an integration test to hit the database. To unit-test the business rules, I mock out the repository, feed the business rules appropriate data, and verify my expected results are returned. What I'd like to do : To unit-test the UI, I mock out the business rules, setup my expected customer instance, render the view, and verify that the view contains the appropriate values for the instance I specified. What I'm stuck doing : To unit-test the repository, I write an integration test, setup an appropriate login, create the required data in the database, open a browser, navigate to the customer, and verify the resulting page contains the appropriate values for the instance I specified. I realize that there is overlap between the two scenarios discussed above, but the key difference it time and effort required to setup and execute the tests. If I (or another dev) removes the address field from the view, I don't want to wait for the integration test to discover this. I want is discovered and flagged in a unit-test that gets multiple times daily. I get the feeling that I'm just not grasping some key concept. Can someone explain why wanting immediate test feedback on the validity of an MVC view is a bad thing? (or if not bad, then not the expected way to get said feedback)

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• How does Router know where to forward packet

  - by kornelijepetak

  If several computers with local addresses (192.168.0.#) are connected to a router and each computer opens a web browser and requests a page over HTTP, when these TCP:80 packets are sent out, the router switches the local address with the static IP of the router (i.e. Provider given IP) so the server can reply to the appropriate address. But how does the router know to which computer to forward the HTTP reply, since the TCP header does not contain the local IP address (does it?), and all computers are using port 80? Does this have anything to do with the MAC addresses? How exactly does this work?

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• VMWare Fusion cannot connect to the NAT connection on my Mac

  - by FFish

  I have been using VMWare Fusion on my Mac to check out my websites on localhost. Now I can't connect anymore with the NAT connection. There seems to be a problem with my IP address or Mac address? I have no idea what causes this, it was working fine before!? In the XP (SP2) VM, in the taskbar I see the Local Area Connection with the yellow warning icon. The bubble says: "This connection has limited or no connectivity. You might not be aisle to access the Internet or some network resources. For more information, click this message." Doing that opens up the Local Area Connection Status panel. In the Support tab, when I click the repair button I get following message: "Windows could not finish repairing the problem because the following action cannot be completed: Renewing IP address." Any help would be greatly appreciated.

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