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• DD-WRT Acces Point as a Router

  - by Dzh

  Following suggestion to this question asked on Network Engineering, I am asking the question here. this is an extension to my previous question (I think it was deleted), where I was claiming that DDWRT was disabling it's DHCP server once connected to the network. I was wrong, as it now seems that it is bridging itself with another parallel connected wireless router. I have two Draytek 2820 and one Netgear WG602v3 with latest DDWRT. Lets call one wired-Draytek and it has wireless disabled. The other one, let's call it wireless-Draytek, is connected to wired-Draytek and has wireless with MAC filtering enabled. Once I connect Netgear to the wired-Draytek, the client that connects to Netgear, will be assigned with IP address from the wireless-Draytek. If the MAC address is not on the wireles-Draytek, the client is unable to obtain IP address and has no connectivity at all, even with manually assigned static IP configuration. To illustrate further, this is how network is set up: wired-Draytek ---------- wireless-Draytek \_________ Netgear What I wish to have, is that Netgear issues IP addresses from it's own IP pool and ignores the MAC filtering rules from wireless-Draytek. This is kind of puzzling how this they are bridging (if they are) themselves automatically. Thanks. UPDATE: It's not a home network. I gave you a bit simplified set-up. If there is a better site on Stack Exchange to ask this, please let me know. The Drayteks are running stock firmware, it's only Netgear that I've flashed to get more stability. In addition to these routers, I have also three 3COM Baseline switch 2824, and another Draytek router with Prosafe FS752TP PoE switch dedicated for VoIP phones. Wired-Draytek has IP 10.0.0.1, DHCP disabled as there is AD DC which is issuing IP addresses. Wireless-Draytek has IP 1.1.1.1 and DHCP enabled. Netgear has default - 192.168.1.1. As per suggestion, the specific question is - how do I isolate these two wireless routers?

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• Iptables rules, forward between two interfaces

  - by Marco

  i have a some difficulties in configuring my ubuntu server firewall ... my situation is this: eth0 - internet eth1 - lan1 eth2 - lan2 I want that clients from lan1 can't communicate with clients from lan2, except for some specific services. E.g. i want that clients in lan1 can ssh into client in lan2, but only that. Any other comunication is forbidden. So, i add this rules to iptables: #Block all traffic between lan, but permit traffic to internet iptables -I FORWARD -i eth1 -o ! eth0 -j DROP iptables -I FORWARD -i eth2 -o ! eth0 -j DROP # Accept ssh traffic from lan1 to client 192.168.20.2 in lan2 iptables -A FORWARD -i eth1 -o eth2 -p tcp --dport 22 -d 192.168.20.2 -j ACCEPT This didn't works. Doing iptables -L FORWARD -v i see: Chain FORWARD (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 33 144 DROP all -- eth1 !eth0 anywhere anywhere 0 0 DROP all -- eth2 !eth0 anywhere anywhere 23630 20M ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED 0 0 ACCEPT all -- eth1 any anywhere anywhere 175 9957 ACCEPT all -- eth1 any anywhere anywhere 107 6420 ACCEPT all -- eth2 any anywhere anywhere 0 0 ACCEPT all -- pptp+ any anywhere anywhere 0 0 ACCEPT all -- tun+ any anywhere anywhere 0 0 ACCEPT tcp -- eth1 eth2 anywhere server2.lan tcp dpt:ssh All packets are dropped, and the count of packets for the last rule is 0 ... How i have to modify my configuration? Thank you. Regards Marco

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• What is the fastest way to clone an INNODB table within the same server?

  - by Vic

  Our development server is a replication slave of our production server. We have a script that developers use if they want to run their applications/bug fixes against fresh data. That script looks like this: dbs=( analytics auth logs users ) server=localhost conn="-h ${server} -u ${username} --password=${password}" # Stop the replication client so we don't encounter weird data. echo "STOP SLAVE" | mysql ${conn} # Bunch of bulk insert optimizations echo "SET autocommit=0" | mysql ${conn} echo "SET unique_checks=0" | mysql ${conn} echo "SET foreign_key_checks=0" | mysql ${conn} # Restore all databases and tables. for sourcedb in ${dbs[*]} do destdb=${prefix}${sourcedb} echo "Dropping database ${destdb}..." echo "DROP DATABASE IF EXISTS ${destdb}" | mysql ${conn} echo "CREATE DATABASE ${destdb}" | mysql ${conn} # First, all the tables. for table in `echo "SHOW FULL TABLES WHERE Table_type <> 'VIEW'" | mysql $conn $sourcedb | tail -n +2`; do if [[ "${table}" != 'BASE' && "${table}" != 'TABLE' && "${table}" != 'VIEW' ]] ; then createTable=`echo "SHOW CREATE TABLE ${table}"|mysql -B -r $conn $sourcedb|tail -n +2|cut -f 2-` echo "Restoring ${destdb}/${table}..." echo "$createTable ;" | mysql $conn $destdb insertData="INSERT INTO ${destdb}.${table} SELECT * FROM ${sourcedb}.${table}" echo "$insertData" | mysql $conn $destdb fi fi done done echo "SET foreign_key_checks=1" | mysql ${conn} echo "SET unique_checks=1" | mysql ${conn} echo "COMMIT" | mysql ${conn} # Restart the replication client echo "START SLAVE" | mysql ${conn} All of these operations are, as I mentioned, within the same server. Is there a faster way to clone the tables I'm not seeing? They're all INNODB tables. Thanks!

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• Openbsd init script for ssh VPN tunnel

  - by manthis

  I have a server hosting SSH tunnels and Openbsd 4.5 clients connecting to it. Things work just fine but I am in the need of automating the connection from the client to the server. So that if the client is accidentally rebooted, then the connection initiates unattended. So it should be as straight forward as to include the ssh connection in an init script. However I have miserably failed to do so by including it to /etc/rc.local, which is the file I usually do this sort of things in. Right now I am using autossh to also restart the connection if necessary and the script that I put on /etc/rc.local follows: #!/bin/sh # # Example script to start up tunnel with autossh. # # This script will tunnel 2200 from the remote host # to 22 on the local host. On remote host do: # ssh -p 2200 localhost # # $Id: autossh.host,v 1.6 2004/01/24 05:53:09 harding Exp $ # ID=root HOST=example.com #AUTOSSH_POLL=600 #AUTOSSH_PORT=20000 #AUTOSSH_GATETIME=30 #AUTOSSH_LOGFILE=$HOST.log #AUTOSSH_DEBUG=yes #AUTOSSH_PATH=/usr/local/bin/ssh export AUTOSSH_POLL AUTOSSH_LOGFILE AUTOSSH_DEBUG AUTOSSH_PATH AUTOSSH_GATETIME AUTOSSH_PORT autossh -2 -f -M 20000 ${ID}@${HOST} The script detaches just fine when run manually so I just include it on /etc/rc.local as echo -n 'starting local daemons:' if [ -x /usr/local/sbin/autossh.sh ]; then echo -n 'ssh tunnel' /usr/local/sbin/autossh.sh fi echo '.' I have also tried calling it from /etc/hostname.tun0 in case there may be issues with /etc/rc.local not being called at the right time when network connections are ready, so I would use: inet 10.254.254.2 255.255.255.252 10.254.254.1 !/usr/local/sbin/autossh.sh Your input is highly appreciated.

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• Shielded ethernet cable and ethernet sockets earthing how to?

  - by ageis23

  Hi I'm going to install 5 Ethernet sockets in my house using cat5e shielded cable. I decided to use this because the sockets will be on the second floor and the most practical way up is within a trunk along with some mains wiring. The cable will be terminated at the router and at the Ethernet faceplate. What can I use to earth then? The faceplate/router are both plastic hence no earth wire needed. I can't use the earth wire within the main socket can I? I figured it will be very very dangerous. I don't want to be connecting to the earth block on the mains either since I totally incompetent when it comes to mains electricity.

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• Queries passed to SQL Server are getting corrupted

  - by adrianbanks

  We are experiencing a bizarre error with our application at a customer site. We have managed to narrow it down to the point where we can replicate the behaviour using just Management Studio and SQL Server. We have two machines, A and B: +------------+ +--------------------+ | [A] | | [B] | | Management | -------------- | SQL Server 2008 R2 | | Studio | | Enterprise x64 | +------------+ +--------------------+ We are running a SQL script in Management Studio on machine A against the SQL Server instance on machine B. We are not actually executing the script, just parsing it. Most of the time, the parse operation works fine. Occasionally (seemingly randomly), the parse operation fails with a syntax error. The error message shows the part of the script with the error, which appears as some SQL from the original script that has been truncated and has random characters appended to it. An example: The original SQL: SELECT DISTINCT ST.TABLE_NAME as TableName FROM INFORMATION_SCHEMA.TABLES AS ST INNER JOIN INFORMATION_SCHEMA.COLUMNS AS SC ON SC.TABLE_NAME = ST.TABLE_NAME WHERE ST.TABLE_TYPE = 'BASE TABLE' AND SC.COLUMN_NAME = 'Identity' AND ST.TABLE_NAME != 'dtproperties' ORDER BY ST.TABLE_NAME The SQL that is in error (as reported by SQL Server): SELECT DISTINCT ST.TABLE_NAME as TableName FROM INFORMATION_SCHEMA.TABLES AS ST INNER JOIN INFORMATION_SCHEMA.COLUMNS AS SC ON SC.TABLE_NAME = Sa? The above example shows how the query is being corrupted. It doesn't always happen, and is not always the same bit of SQL that causes the error. Parsing this script against another SQL Server instance produces no errors, showing that the script is fine. It appears that something is corrupting the SQL that is being received the the server. This leads me to think that the problem lies either with the client end or in the transmission of the SQL from the client to the server. I have a SQL trace from the period where an error occurs, which shows the SQL has been corrupted when SQL Server receives it. We have been unable to track down any possible cause of this behaviour, and so cannot find a fix. Because the errors occur seemingly randomly, it is also very hard to generate reproduction steps to submit a bug report. Any ideas?

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• "one-off" use of http_proxy in a Chef remote_file resource

  - by user169200

  I have a use case where most of my remote_file resources and yum resources download files directly from an internal server. However, there is a need to download one or two files with remote_file that is outside our firewall and which must go through a HTTP proxy. If I set the http_proxy setting in /etc/chef/client.rb, it adversely affects the recipe's ability to download yum and other files from internal resources. Is there a way to have a remote_file resource download a remote URL through a proxy without setting the http_proxy value in /etc/chef/client.rb? In my sample code, below, I'm downloading a redmine bundle from rubyforge.org, which requires my servers to go through a corporate proxy. I came up with a ruby_block before and after the remote_file resource that sets the http_proxy and "unsets" it. I'm looking for a cleaner way to do this. ruby_block "setenv-http_proxy" do block do Chef::Config.http_proxy = node['redmine']['http_proxy'] ENV['http_proxy'] = node['redmine']['http_proxy'] ENV['HTTP_PROXY'] = node['redmine']['http_proxy'] end action node['redmine']['rubyforge_use_proxy'] ? :create : :nothing notifies :create_if_missing, "remote_file[redmine-bundle.zip]", :immediately end remote_file "redmine-bundle.zip" do path "#{Dir.tmpdir}/redmine-#{attrs['version']}-bundle.zip" source attrs['download_url'] mode "0644" action :create_if_missing notifies :decompress, "zipp[redmine-bundle.zip]", :immediately notifies :create, "ruby_block[unsetenv-http_proxy]", :immediately end ruby_block "unsetenv-http_proxy" do block do Chef::Config.http_proxy = nil ENV['http_proxy'] = nil ENV['HTTP_PROXY'] = nil end action node['redmine']['rubyforge_use_proxy'] ? :create : :nothing end

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• How to configure firewall to allow using a specific port

  - by user174416

  I am trying to make tcp ip connection to a server xxx.xxx.xxx.xxx with port xxxx. But I am getting error message "10061 connection refused". I think firewall on the server is stopping my program to access that port. How can I configure the firewall of server to allow my program to use that port. I had asked this question on stackoverflow (http://stackoverflow.com/questions/13448429/socket-error-while-making-tcp-ip-connection-in-delphi) where I was suggested to ask it on super user. Please provide me any solution....

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• sudo su - username while keeping ssh key forwarding

  - by Florian Schulze

  If I have a server A into which I can login with my ssh key and I have the ability to "sudo su - otheruser", I lose key forwarding, because the env variables are removed and the socket is only readable by my original user. Is there a way I can bridge the key forwarding through the "sudo su - otheruser", so I can do stuff on a server B with my forwarded key (git clone and rsync in my case)? The only way I can think of is adding my key to authorized_keys of otheruser and "ssh otheruser@localhost", but that's cumbersome to do for every user and server combination I may have.

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• How could one track all emails sent from employees?

  - by Schnapple

  My client runs a small business. This business has a small number of employees. For various reasons, my client would like to be able to have a copy of all of the emails sent from their employees BCC'd to them. The net effect here would be similar to the access they would have if they hosted their email through Exchange but the business is too small to make this a feasible option. They are currently hosted through GoDaddy. I have not investigated it myself personally but apparently GoDaddy can do something along these lines for all incoming email but not for outgoing email. Is there a way to set up email accounts for a particular domain to where a specified admin user could be copied on all outgoing email? UPDATE: I've modified the title to reflect that it's employees not just users who are the goal here. Also I forgot to mention how they currently do email through GoDaddy - POP3. I think maybe IMAP is also possible through GoDaddy, not sure. And yes, the bottom line here is to basically emulate a feature of a larger-class platform through a smaller, cheaper platform. Opinion-only answers should probably be relegated to the comments. For the sake of argument let's say that any legal requirements have been met.

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• new pc..noisy fan

  - by BRQ

  It's a new build, but it's always had noisy fans. From start to end, they will not stop running. The case is a cooler master which I believe comes with a fan that is not controlled by BIOS (according to technician), so that may be the source of the problem..but my lack of knowledge on the matter prevents me from making a reasonable assessment. Here are readings from CoreTemp: Model: Intel Core i7 870 (Lynnfield) Platform: LAG 1156 (Socket H) Frequency: 1658.23MHz (132.66 x 12.5) Tj. Max: 99 C Core #0: low= 34 C; high= 42 C; Load= 0% Core #1: low 31 C; high 42 C; load= 0% Core #3: 35 C; 42 C; 0% Any input will be appreciated.

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• 250k connections for comet with node.js

  - by Nenad

  How to implement node.js to be able to handle 250k connections as comet server (client side we use socket.io)? Would the use of nginx as proxy/loadbalancer be the right solution? Or will HA-Proxy be the better way? Has anyone real world experience with 100k+ connections and can share his setup? Would a setup like this be the right one (Quad core CPU per server - start 4 Instances of node.js per Server?): nginx (as proxy / load balancing server) / | \ / | \ / | \ / | \ node server #1 node server #2 node server #3 4 instances 4 instances 4 instances

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• Microsoft Office 2003 applications crash on 'Save As' to a network mapped drive

  - by Archit Baweja

  Hey guys, so I'm not sure if it belongs on ServerFault forums so figured I'd ask here first because its a workstation/client side issue. I have a client where we have windows server 2003 setup, with windows xp professional setup on all the workstations. We've setup a 'domain' and all workstations logon to the domain (authenticated by the Windows Domain Controller), and in the logon script we map drives on to each workstation. Everything is working peachy except for one workstation, where when I open a file in excel from a mapped drive, it opens fine, but when I go to hit Save As, the Save As dialog pops and hangs up. I cannot perform any other action in excel. When I try cancel the Save As dialog, excel crashes. The mapped drive opens up fine in Windows Explorer. To further investigate this issue, I created a new blank text document on the network drive in Windows Explorer. I then opened it. Then hit save as, and the Save As dialog opened up fine and it would let me save the document. I repeated the above steps for a word document. However this time the Save As dialog hung/froze again. So I'd imagine its a Microsoft Office Issue. Any ideas?

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• SWATCH - what am I doing wrong?

  - by Brian Dunbar

  What I want/need/desire is to log when a user logs into my FTP server. Problem: I can't make swatch work the way I should be able to. This data is logged to a file - but of course these logs are not kept very long. I can't keep the logs around forever, but I can extract data from then, analyze it, store results elsewhere. If there is a better way to do this than the following, I'm all ears. Swatch version 3.2.3 Perl 5.12 FTP: VSFTP OS (Test): OS X 10.6.8 OS (Production): Solaris From man I see I can pass contents to a command .. so I should be able to echo those values to file, do a sed/cut/uniq thing on them for stats. $ man swatch (snip) exec command Execute command. The command may contain variables which are substituted with fields from the matched line. A $N will be replaced by the Nth field in the line. A $0 or $* will be replaced by the entire line. Swatch file .swatchrc watchfor /OK LOGIN/ echo=red pipe "echo "0: $0 1:$1 2:$2 3:$3 4:$4 5:$5" >> /Users/bdunbar/dev/ftplog/output.txt" Launch with $ swatch -c /Users/bdunbar/.swatchrc --script-dir /Users/bdunbar/dev/ftplog -t /Users/bdunbar/dev/ftplog/vsftpd.log & Test echo "Mon July 9 03:11:07 2012 [pid 14938] [aetech] OK LOGIN: Client "206.209.255.227"" >> vsftpd.log Results - it's echoing to TTY. This is not needed or desired on the server, but it does tell me things are working. ftplog *** swatch version 3.2.3 (pid:25780) started at Mon Jul 9 15:23:33 CDT 2012 Mon July 9 03:11:07 2012 [pid 14938] [aetech] OK LOGIN: Client 206.209.255.227 Results - bad! I appear to not be sending the variables to text. $ tail -f output.txt 0: /Users/bdunbar/dev/ftplog/.swatch_script.25780 1: 2: 3: 4: 5:

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• virtual machines, dual booting and data disks on SSD

  - by stevemarvell

  This is in planning, so if I've got the strategy wrong, please let me know. There are multiple questions here, but I think they all degenerate to the same answers. The hardware is a laptop with a single SSD. I'm trying to not lose the performance of the SSD. I plan a native dual booting Windows (plus cygwin) and Linux machine which is my BYOD and represents the development environment. I keep the codebase on a shared partition (though sometimes this is an external thunderbolt SSD) which can be natively "mounted" by whichever OS is in operation. I boot into one or the other environments depending on the task in hand. Sometime I have to develop with windows tools, but generally, Linux is my preferred development environment. It would be ideal if I could VM the other OS and run either in either. I'm going to assume, because I've not found a sensible VM based solution, that I have get samba involved to share the code partition between VMs. Is this going to blow my SSD performance in the VM? The client also supplies me with a VM for the target environment, usually linux. This is not often suited to development and is used for testing only. I normally keep two copies of this, one as a sandbox and one which I deploy to using the client's preferred method. I keep these VM snapshots on the shared partition. The latter is interacted with over the network and so has no disk sharing requirements. However, it would be useful for the sandbox to be able to "mount" the code base from the natively running OS. Is this samba or nfs again, depending on the native OS? Am I missing a trick which allows this to all work smoothly with all four environments running at once without loosing the SSD performance?

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• Mac dev folder missing, SSH not working

  - by SamGoody

  A few days ago, SSH stopped working. When I try logging in a get the following message: PTY allocation request failed on channel 0 stdin: is not a tty fatal: unrecognized command '' Connection to 74.52.61.194 closed. Web searches have shown me that there might be something wrong with /dev/std. But my computer lacks a /dev/ drive. There is an Alias to /dev/ [hidden, but I've revealed hidden files to do this search], but when I try to open it I am told that it cannot find the folder it is aliasing. Now, many a web search tells me that without a dev folder, the computer doesn't work, but it does seem to work, except the SSH. Also, are there any tools that can save my SSH preferences so that I don't have to, each time, type out the username@adrees, password, path all of which are long and complex? Not looking for a Filezilla type client, there are many of those. Looking for a command line like putty, that lets me use bash on the remote client. Am on Macbook Pro, latest version of Tiger.

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• mount.nfs: access denied by server while mounting (Kerberos authentication)

  - by Nick

  There's plenty of references to this error on Goggle, and even a question here with the same title, but it seems that "access denied by server while mounting" is a catch-all error. I've tried suggestions that others have used to fix this problem, but they did not work in my case. I'm trying to set-up a Kerberos-based NFS file server with shared homes for a Linux network. I'm using Ubuntu 11.04 Servers and clients. When trying to mount a share using: mount 192.168.1.115:/export/home/ /media/tmp I get: mount.nfs: access denied by server while mounting 192.168.1.115:/export/home/ This is the same if I mount it from a client machine or from the server itself. On the server, in /var/log/syslog I get: Aug 25 06:22:37 nfs mountd[1580]: authenticated mount request from 192.168.1.115:835 for /export/home (/export/home) Aug 25 06:22:37 nfs mountd[1580]: authenticated unmount request from 192.168.1.115:766 for /export/home (/export/home) Which is odd, since it says it's authenticated the request, not denying it. /etc/exports: /export *(rw,fsid=0,crossmnt,insecure,async,no_subtree_check,sec=krb5p:krb5i:krb5) /export/home *(rw,insecure,async,no_subtree_check,sec=krb5p:krb5i:krb5) On client: me@dt1:/$ rpcinfo -p 192.168.1.115 program vers proto port 100000 2 tcp 111 portmapper 100024 1 udp 37320 status 100024 1 tcp 48460 status 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 4 tcp 2049 nfs 100227 2 tcp 2049 100227 3 tcp 2049 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 4 udp 2049 nfs 100227 2 udp 2049 100227 3 udp 2049 100021 1 udp 58625 nlockmgr 100021 3 udp 58625 nlockmgr 100021 4 udp 58625 nlockmgr 100021 1 tcp 49616 nlockmgr 100021 3 tcp 49616 nlockmgr 100021 4 tcp 49616 nlockmgr 100005 1 udp 45627 mountd 100005 1 tcp 60265 mountd 100005 2 udp 45627 mountd 100005 2 tcp 60265 mountd 100005 3 udp 45627 mountd 100005 3 tcp 60265 mountd Any suggestions I could try?

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• ovs-vsctl: "eth0" is not a valid UUID

  - by Przemek Lach

  I'm trying to setup an open v-switch inside my Ubuntu 12.04 Server VM. I have created three interfaces for this VM and I want to create a port mirror inside of the VM using these there interfaces and open v-switch. There are three Host-Only Adapters: eth0, eth1, eth2. The idea is that three other VM's will be connected to these adapters. One of these VM's will stream UDP video to eth0 and I want the vswitch'd VM to mirror those packets from eth0 onto eth1 and eth2. Each of the VM's connected to eth1 and eth2 will get the same video stream. I performed the following steps to install open v-switch: $ apt-get install python-simplejson python-qt4 python-twisted-conch automake autoconf gcc uml-utilities libtool build-essential $ apt-get install build-essential autoconf automake pkg-config $ wget http://openvswitch.org/releases/openvswitch-1.7.1.tar.gz $ tar xf http://openvswitch.org/releases/openvswitch-1.7.1.tar.gz $ cd http://openvswitch.org/releases/openvswitch-1.7.1.tar.gz $ apt-get install libssl-dev iproute tcpdump linux-headers-`uname -r` $ ./boot.sh $ ./configure - -with-linux=/lib/modules/`uname -r`/build $ make $ sudo make install After installation I configured as follows: $ insmod datapath/linux/openvswitch.ko $ sudo touch /usr/local/etc/ovs-vswitchd.conf $ mkdir -p /usr/local/etc/openvswitch $ ovsdb-tool create /usr/local/etc/openvswitch/conf.db Then I started the server: $ ovsdb-server /usr/local/etc/openvswitch/conf.db \ --remote=punix:/usr/local/var/run/openvswitch/db.sock \ --remote=db:Open_vSwitch,manager_options \ --private-key=db:SSL,private_key \ --certificate=db:SSL,certificate \ --bootstrap-ca-cert=db:SSL,ca_cert --pidfile --detach --log-file $ ovs-vsctl –no-wait init (run only once) $ ovs-vswitchd --pidfile --detach The above steps I got from this tutorial and it all worked fine. I then proceeded to add a port mirror based on the open v-switch documentation under Port Mirroring. I successfully completed the following commands: $ ovs-vsctl add-br br0 $ ovs-vsctl add-port br0 eth0 $ ovs-vsctl add-port br0 eth1 $ ovs-vsctl add-port br0 eth2 $ ifconfig eth0 promisc up $ ifconfig eth1 promisc up $ ifconfig eth2 promisc up At this point when I run ovs-vsctl show I get the following: 75bda8c2-b870-438b-9115-e36288ea1cd8 Bridge "br0" Port "br0" Interface "br0" type: internal Port "eth0" Interface "eth0" Port "eth2" Interface "eth2" Port "eth1" Interface "eth1" And when I run ifconfig I get the following: eth0 Link encap:Ethernet HWaddr 08:00:27:9f:51:ca inet6 addr: fe80::a00:27ff:fe9f:51ca/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:17 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1494 (1.4 KB) TX bytes:468 (468.0 B) eth1 Link encap:Ethernet HWaddr 08:00:27:53:02:d4 inet6 addr: fe80::a00:27ff:fe53:2d4/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:17 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1494 (1.4 KB) TX bytes:468 (468.0 B) eth2 Link encap:Ethernet HWaddr 08:00:27:cb:a5:93 inet6 addr: fe80::a00:27ff:fecb:a593/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:17 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1494 (1.4 KB) TX bytes:468 (468.0 B) eth3 Link encap:Ethernet HWaddr 08:00:27:df:bb:d8 inet addr:192.168.1.139 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fedf:bbd8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2211 errors:0 dropped:0 overruns:0 frame:0 TX packets:1196 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:182987 (182.9 KB) TX bytes:125441 (125.4 KB) NOTE: I use eth3 as a bridge adapter for SSH'ing into the VM. So now, I think I've done everything correctly but when I try to create the bridge using the following command: $ ovs-vsctl -- set Bridge br0 mirrors=@m -- --id=@eth0 get Port eth0 -- --id=@eth1 get Port eth1 -- --id=@m create Mirror name=app1Mirror select-dst-port=eth0 select-src-port=@eth0 output-port=@eth1,eth2 I get the following error: ovs-vsctl: "eth0" is not a valid UUID I don't understand why it's not able to find the interfaces?

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• 403 Error when accessing vhost directive

  - by Ortix92

  I'm having some troubles with setting up my webserver (Centos 5.8). It's a brand new server and I'm trying to set a vhost to the following dir: /home/exo/public_html However whenever I restart httpd I get the following warning: Code: Starting httpd: Warning: DocumentRoot [/home/exo/public_html] does not exist Yes the directory does exist. So whenever I visit the domain exo-l.com it gives me a 403 error. This is my config file (I put this inside my httpd.conf because the files in conf.d were not included for some reason. Or at least my newly created vhost conf file, but that has 0 priority for now) <VirtualHost *:80> DocumentRoot /home/exo/public_html ServerName www.exo-l.com ServerAlias exo-l.com <Directory /home/exo/public_html> Order allow,deny Allow from all </Directory> </VirtualHost I'm completely clueless because this should work as far as I know. httpd is being run as apache:apache i tried chowning the public_html directory (also recursively) to exo:apache, apache:apache, root:root with no success. chmod 777 doesn't do anything either. a tail from the log: [Sat Oct 13 15:10:04 2012] [error] [client 82.***.***.61] (13)Permission denied: access to / denied [Sat Oct 13 15:10:04 2012] [error] [client 82.***.***.61] (13)Permission denied: access to / denied I also found something about selinux and that disabling it might help, but do I really want to do that?

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• How can I troubleshoot SSD disconnection problems on Windows 7?

  - by 0xC0000022L

  I have a small SSD (Transcend StoreJet TS256GESD200K) which I am using on several computers. The drive is formatted with NTFS and recently I started noticing disconnects. Normally one probably wouldn't notice (you don't even get the notification sound in Windows when it disconnects), but since I use USBDLM and run a VM from that SSD, I get to see this first-hand. How could I best figure out whether the problem is the hardware (SSD, USB socket, USB cable or something in the PC) or software? In short: how can I locate the source of the disruption so that I can work on removing the problem? Side-note: SMART status for the SSD is clean.

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• Converting a Windows 2003 server

  - by Jim Bass

  We have a legacy database system based upon MS SQL running on Windows Server 2003. The client software will only run on Windows XP. We have recently had success converting a client into a virtual machine and running it under Fusion on Mac minis. So far, it is working incredibly well. So well, in fact, that we are now considering trying to convert the server to a virtual machine. This raises several questions, though: 1. The server uses a raid array. Does the VM virtualize the raid array? I only ask because in my experience Windows products don't like it when you change core hardware. 2. Is there any reason why running SQL server on a virtual machine won't work? It will be up 24/7. 3. Is there a different converter for servers? 4. Will I have to track down the licensing for MS SQL and Server 2003 or will they come across ok? 5. The company that designed the software is no longer in business. There is some fear that the software is somehow tied to the hardware configuration. We bought the hardware, but their engineers came out and configured the system. Will the virtual machine be able to spoof particular chip sets? Thanks! Jim Bass

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• How to Deploy an ASP.NET Web API- and Browser-based Application to a Production Environment [closed]

  - by lmttag

  Possible Duplicate: How to Deploy an ASP.NET Web API- and Browser-based Application to a Production Environment We have an ASP.NET Web API server that serves up a SQL Server data driven website. The API uses JSON to transfer data from SQL Server to the front end. We need to move it to an internal production environment (nothing will be exposed on the public Internet) and we’re having problems - or just not understanding what needs to be done. There are two domains: The corporate domain - where all users login normally. The process domain - contains the database the Web API needs to access. The IT staff wants to put a DMZ between the two domains to house the IIS app and shield the users on the corporate domain from having access into the process domain directly. The ideal configuration is: corp domain (end users) <–> firewall (open port 80) <–> DMZ (web server running IIS) <–> firewall (open port 80 or 1433????) <–> process domain (IIS for Web API and SQL Server) We don’t really understand how to deploy our browser/Web API application in this scenario. Do we need to break up our application so that all the client code is on the IIS server in the DMZ, while the Web API gets installed on the server in the process domain? Does the entire app (client code and Web API) stay together on the IIS server in the DMZ, which then somehow accesses the SQL Server instance to get data? From the IIS server and app in the DMZ, would you simply access the Web API on the server in the process domain by going to http://server/appname/api/getitmes? In the second firewall between the DMZ and the process domain, would you have to open port 1433 or just port 80 since the Web API is a HTTP endpoint? Or, is there some better way of deployment (i.e., how ASP.NET Web API single page applications written all in HTML5 and JavaScript supposed to be deployed to production environments?)? NB: The servers are Win2k8 R2, SQL Server 2k8 R2, and IIS 7.5.

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• DHCPPloc.exe or equivalent for Windows 7?

  - by Bart B

  There seems to be some DHCP funnyness going on so I need to run something to show me what's going at a DHCP level. Before I upgraded my machine to Windows 7 I used DHCPloc.exe from the Windows XP support tools, and it worked like a charm. I can't seem to find Support Tools for Windows 7, and trying to use the XP tools in compatibility mode doesn't work (I tried, it fails to open a receiving socket). I need a tool to monitor DHCP traffic, and ideally one that lets me filter it to exclude DHCP traffic from our trusted DHCP servers and only show me un-authorised DHCP traffic.

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• How to create persistent static route on Mac OS X 10.6?

  - by kopobamypa

  I need to add static route on Mac OS. I found good description here Permanent Static Route Mac OS X 10.4.0 and followed the Roark Holz's (roarkh) solution. Now my problem: sometimes this solution works, sometimes does not. When it doesn't work I see these messages after boot in the Console Messages log: 06.05.10 9:34:13 com.apple.launchd[1] *** launchd[1] has started up. *** 06.05.10 9:34:46 com.apple.SystemStarter[30] Adding Static Route to 10.152 06.05.10 9:34:46 com.apple.SystemStarter[30] route: writing to routing socket: Network is unreachable 06.05.10 9:34:46 com.apple.SystemStarter[30] add net 10.152.0.0: gateway 192.168.1.234: Network is unreachable I want to know what is going on. How this kind of problem can be troubleshooted?

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• MySQL will Stop working after being Started

  - by user115343

  i am new to a webserver thing. I use Centmin mod to install nginx + mariaDB to setup small wordpress blog,the first day it is ok,there are nice "hello world" on my box's IP,but today i have checked that mysql is stop working so i immediately start it again but it is stoped again after some minutes! i use this tutorial but still,it will stop after some period here is my log [root@rylai ~]# tail -f /var/log/mysqld.log 120326 16:19:05 [Note] Plugin 'PBXT_STATISTICS' is disabled. 120326 16:19:05 [Note] Plugin 'InnoDB' is disabled. 120326 16:19:06 [Note] Event Scheduler: Loaded 0 events 120326 16:19:06 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.2.10-MariaDB-mariadb107' socket: '/var/lib/mysql/mysql.sock' port: 3306 (MariaDB - http://mariadb.com/) 120326 16:20:36 mysqld_safe Number of processes running now: 0 120326 16:20:36 mysqld_safe mysqld restarted 120326 16:20:39 [Note] Plugin 'ARCHIVE' is disabled. 120326 16:20:39 [Note] Plugin 'FEDERATED' is disabled. 120326 16:20:40 mysqld_safe mysqld from pid file /var/lib/mysql/rylai.pid ended I only access mysql on CLI,didnt install any panel yet

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