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  • IPTABLES syntax help to forward Remote Desktop requests to a VM [CentOS host]

    - by NVRAM
    I've a VM running MSWindows XP hosted on my CentOS 5.4 machine. I can rdesktop into it from the hosting machine and work just fine using the private ddress (192.168.122.65), but I now need to allow Remote Desktop access from other computers (not just the machine hosting the VM). [Edit] I only need to allow access for a day or so, so don't want to add a NIC (for XP activation reasons). Could someone help me with the iptables syntax? The VM is on a private/virtual network: 192.168.122.65 and my CentOS machine is on a physical network, at 10.1.3.38 (and 192.168.122.1 as the GW for the virtual net). I found this question, but none of the answers seemed to work and I'm a bit timid at blindly trying variations. My FORWARD rules are as listed. Thanks in advance. # iptables -L FORWARD Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable RH-Firewall-1-INPUT all -- anywhere anywhere [Edit] If I do play "blindly" is there a simple way to reset the settings on CentOS (a la service network restart)?

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  • Apache Virtual Hosts behind Cisco Router

    - by Theo
    I'm setting up an Apache 2.2 Ubuntu web server for internal services that is also supposed to be accessed from outside our LAN. Our LAN has a single external IP that is the external IP of our RV042 Cisco router. We have set up several A records on our external DNS server that point to this IP. Our internal DNS server resolve the same records to the internal IP of our web server, so computers from inside the network can access them using the same address as if they were outside. We forwarded the router's external 80 port to our web server's 80 port. I have set up one Virtual Host for each domain name in our list, and my httpd.conf is something like this: ServerName web.domain.com NameVirtualHost *:80 <VirtualHost *:80> ServerName alfresco.domain.com <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass /alfresco http://localhost:8080/alfresco ProxyPassReverse /alfresco http://localhost:8080/alfresco ProxyPass /share http://localhost:8080/share ProxyPassReverse /share http://localhost:8080/share </VirtualHost> <VirtualHost *:80> ServerName crm.domain.com DocumentRoot /var/www/sugarcrm </VirtualHost> Now, this works if we are in our LAN. However, if we are outside of our LAN we reach our web server's default page saying: It Works! This is the default web page for this server. But we can't reach the virtual hosts, as if the domain name is not being preserved when the router forward the packets to the web server. Am I doing something wrong? How can I check what is going on? What should be the settings to make this work from outside?

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  • How to diagnose issue between mobo, RAID, and SSD cache drive? [migrated]

    - by goober
    Background This issue is happening on my custom-built desktop. Relevant specs: Motherboard: ASUS P8Z68-V PRO Utilizing Intel RST technology (application that uses unused SSD as cache) Processor: Intel core i7-2600k (not overclocked) HDDs: RAID1 of 2x Seagate Barracuda 1TB (ST31000524AS) (RAID performed via z68 chipset) Machine has run fine for ~1 year with no issues, and has been well-maintained (dust, etc.) What Happened Random Freezing issues -- intermittent Looked at the RST application screen to see that the acceleration cache was listed as "unavailable" -- recommended that I power down and reconnect the drive. Reconnected the drive to no avail. Attempted to move the drive to another SATA port. Acceleration option disappeared from RST software. Now, the freeze happens whenever loading something particularly data-driven (a video, a game, etc.) Steps Attempted Reconnected the drive to no avail. Updated Intel RST software to v. 11.6.0.1030 to see if that made a difference. Attempted to move the drive to another SATA port. Acceleration option disappeared from RST software. Connected the drive as its own volume. Formatted it, ran disk check errors -- all seems fine. Reconnected the drive and selected it again as the cache drive. Now, what happens when there is a freeze: Machine freezes I am unable to perform any command Screen then goes black I hit the reset button During boot, all drives show as "Disabled" and I am told no volume can be found I then hit the reset button (or power off/on) again. Either the next time (or sometimes after repeating this once more), the metadata cache is reconstructed and the system boots fine, showing the SSD as a cache. Question I believe this is an issue with the SSD itself, but how can I be sure since connecting it separately appeared to show no problems? I want to make sure it's not an issue with the motherboard, SATA ports, etc.

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  • Apache mod_proxy

    - by mhouston100
    Uggh, I'm spewing that I can't figure this out, I'm so frustrated: <VirtualHost *:80> servername domain1.com.au ServerAdmin webmaster@localhost DocumentRoot /var/www/html ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined <Proxy *> Order Allow,Deny Allow from all </Proxy> RewriteEngine on ReWriteCond %{SERVER_PORT} !^443$ RewriteRule ^/(.*) https://%{HTTP_HOST}/$1 [NC,R,L] </VirtualHost> <VirtualHost *:443> servername domain1.com.au SSLEngine on SSLCertificateFile /etc/apache2/ssl/owncloud.pem SSLCertificateKeyFile /etc/apache2/ssl/owncloud.key DocumentRoot /var/www/html </VirtualHost> <VirtualHost *:*> Servername domain2.com.au ProxyRequests Off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / https://192.168.1.12/ ProxyPassReverse / https://192.168.1.12/ </VirtualHost> Not sure if it's clear what I'm trying to do, but I've read and read and READ, I still can't figure it out. Basically I have a working Apache server with a rewrite to force HTTPS, as seen in the first two VirtualHost entries. I now have a webmail service I set up on another server, under another domain name, however I only have one incoming public IP address. So I'm trying to have any incoming requests for the second domain to be proxied to the other server to access the webmail, whether its port 80 or 443. IMAP and POP3 are no problems, I can just forward the ports directly to the correct server. The results of the above configuration is that requests to domain2.com.au (port 80 or 443) are forwarded to https://domain1.com.au. Am I headed in the right direction?

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  • Multiple copies off the same printer on Windows 7 from PrintUIEntry

    - by Kev
    I currently have a number of bat files which work perfectly fine on Windows XP which install the same printer multiple times with a number of finisher options set - e.g. after running the bat file below I would end up with four printers in the printer drop down called Sharp Kits Printer - A4 Single Sided Sharp Kits Printer - A4 Single Sided Stapled Sharp Kits Printer - A4 Duplex Stapled Sharp Kits Printer - A4 Duplex which all have there options configured in the relevant way. I have amended on Windows 7 to point to correct INF file and printer name in the INF files - a single printer installs fine. However when I run the complete batch file only the first printer in it is installed - occassionally the later ones flash up in the GUI but then vanish when you press F5 and are still missing after a reboot. SET QUEUENAME=http://192.168.7.123:631/printers/Sharp700 SET PPD=J:\DRIVERS\Printers\MX700-Win7-64\SJ1JWENG.INF SET PPDENTRYNAME=SHARP MX-M700U PPD J: cd "\DRIVERS\Printers\MX700-Win7-64" SET NICENAME="Sharp Kits Printer - A4 Single Sided" SET PREFS="J:\SCRIPTS\Printers-Win7-64bit\Sharp_SINGLE_SETTINGS.dat" %SYSTEMDRIVE%\WINDOWS\system32\rundll32.exe %SYSTEMDRIVE%\WINDOWS\system32\printui.dll,PrintUIEntry /w /b %NICENAME% /x /n "part of the n switch" /f "%PPD%" /if /r "%QUEUENAME%" /m "%PPDENTRYNAME%" rem restore settings go here... SET NICENAME="Sharp Kits Printer - A4 Duplex" SET PREFS="J:\SCRIPTS\Printers\Sharp_DUPLEX_SETTINGS.dat" %SYSTEMDRIVE%\WINDOWS\system32\rundll32.exe %SYSTEMDRIVE%\WINDOWS\system32\printui.dll,PrintUIEntry /w /b %NICENAME% /x /n "part of the n switch" /f "%PPD%" /if /r "%QUEUENAME%" /m "%PPDENTRYNAME%" rem restore settings go here... I have tried adding the "/u" paramater to the end, I have changed the "/n" paramater to be different (e.g. n1, n2,n3 etc) - both of these result in the same. I have also tried to change the port (/r) to have "_1" (etc) on the end like the GUI would but this errors as the port doesn't exist. Is it possible to do this on Windows 7, and if so how?

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  • Doesn't work Nginx + SSI

    - by boopidoopi
    I have some problems. Nginx doesn't work with SSI. Nginx listens 80 port (frontend), apache2 listens 81 port (backend). That is my nginx configurations: server { listen 80; server_name test.dev www.test.dev; error_log /var/log/nginx/error.log debug; log_subrequest on; location / { ssi on; proxy_pass http://localhost:81; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; client_max_body_size 15m; client_body_buffer_size 128k; } } SSI include in test.dev index.php: <!--# include virtual="http:test.dev/test.html" -- When I open test.dev/index.php I see clean page. In page source: <!--# include virtual="http:test.dev/test.html" -- So how to enable SSI in nginx? Can you help me?

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  • Vagrant VM Fails to Boot

    - by Rob Wilkerson
    I have a Vagrant environment that requires me to forward port 80 so I bring it up under sudo on an OS X machine. This has always been fine until I recently upgraded to Vagrant 1.2.2. Now it fails to boot. [default] Waiting for VM to boot. This can take a few minutes. [default] Failed to connect to VM! Failed to connect to VM via SSH. Please verify the VM successfully booted by looking at the VirtualBox GUI. Because I'm running under sudo, the machine never gets added to the Virtualbox GUI, but that's always been the case for this environment. I don't get any indication that there was a problem with the additions -- a potential source of this error, from what I've read. I can bring things up just fine if I change to using port 8080 on the host machine. I can't use the app, but the VM itself loads up and provisions nicely. As far as I can tell, the only thing that's changed is: I upgraded my Vagrant version I updated the project's Vagrantfile to use v2 syntax. Anyone have any idea what I might be missing? I thought I'd be able to find this pretty easily, but it's quickly becoming a very real problem.

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  • What differences are there between "home" switches and "professional" switches?

    - by pjreddie
    Our radio station uses a PtP wireless system to stream our radio and TV signals from our studio up a hill to our transmitter. We have been having problems with warbly sound and drop outs that come from some point in this system. An engineer that occasionally visits the station thinks it could be the switches we use on each side of the PtP wireless system to connect the PtP devices to the encoders and decoders and wants us to get two of these switches: http://www.amazon.com/Netgear-JGS516-ProSafe-16-Port-Ethernet/dp/B0002CWPOK/ref=dp_return_1 The encoder/decoder setup only streams 8Mbps total so it seems like the switches we have should not be stressed out, unless they are causing sufficient latency to degrade the performance of the encoder/decoder. At each end of the connection we only have 4 connections, is there any reason we couldn't get a cheaper, "home" quality switch like this: http://www.amazon.com/D-Link-DGS-1005G-5-Port-Gigabit-Desktop/dp/tech-data/B003X7TRWE/ref=de_a_smtd Is there a significant difference that we would notice in terms of latency between these two switches? How much does the quality of the switch actually matter in this scenario? Any help is appreciated, feel free to ask questions if anything needs clarification. Thanks

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  • LVS / IPVS difference in ActiveConn since upgrading

    - by Hans
    I've recently migrated from an old version of LVS / ldirectord (Ultra Monkey) to a new Debian install with ldirectord. Now the amount of Active Connections is usually higher than the amount of Inactive Connections, it used to be the other way around. Basically on the old load balancer the connections looked something like: -> RemoteAddress:Port Forward Weight ActiveConn InActConn -> 10.84.32.21:0 Masq 1 12 252 -> 10.84.32.22:0 Masq 1 18 368 However since migrating it to the new load balancer it looks more like: -> RemoteAddress:Port Forward Weight ActiveConn InActConn -> 10.84.32.21:0 Masq 1 313 141 -> 10.84.32.22:0 Masq 1 276 183 Old load balancer: Debian 3.1 ipvsadm 1.24 ldirectord 1.2.3 New load balancer: Debian 6.0.5 ipvsadm 1.25 ldirectord 1.0.3 (I guess the versioning system changed) Is it because the old load balancer was running a kernel from 2005, and ldirectord from 2004, and things have simply changed in the past 7 - 8 years? Did I miss some sysctl settings that I should be enforcing for it to behave in the same way? Everything appears to be working fine but can anyone see an issue with this behaviour? Thanks in advance! Additional info: I'm using LVS in masquerading mode, the real servers have the load balancer as their gateway. The real servers are running Apache, which hasn't changed during the upgrade. The boxes themselves show roughly the same amount of Inactive Connections shown in ipvsadm.

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  • Tuning up a MySQL server

    - by NinjaCat
    I inherited a mysql server, and so I've started with running the MySQLTuner.pl script. I am not a MySQL expert but I can see that there is definitely a mess here. I'm not looking to go after every single thing that needs fixing and tuning, but I do want to grab the major, low hanging fruit. Total Memory on the system is: 512MB. Yes, I know it's low, but it's what we have for the time being. Here's what the script had to say: General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance MySQL started within last 24 hours - recommendations may be inaccurate Enable the slow query log to troubleshoot bad queries When making adjustments, make tmp_table_size/max_heap_table_size equal Reduce your SELECT DISTINCT queries without LIMIT clauses Increase table_cache gradually to avoid file descriptor limits Your applications are not closing MySQL connections properly Variables to adjust: query_cache_limit (> 1M, or use smaller result sets) tmp_table_size (> 16M) max_heap_table_size (> 16M) table_cache (> 64) innodb_buffer_pool_size (>= 326M) For the variables that it recommends that I adjust, I don't even see most of them in the mysql.cnf file. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] innodb_buffer_pool_size = 220M innodb_flush_log_at_trx_commit = 2 innodb_file_per_table = 1 innodb_thread_concurrency = 32 skip-locking big-tables max_connections = 50 innodb_lock_wait_timeout = 600 slave_transaction_retries = 10 innodb_table_locks = 0 innodb_additional_mem_pool_size = 20M user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking bind-address = localhost key_buffer = 16M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 4 myisam-recover = BACKUP query_cache_limit = 1M query_cache_size = 16M log_error = /var/log/mysql/error.log expire_logs_days = 10 max_binlog_size = 100M skip-locking innodb_file_per_table = 1 big-tables [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] [isamchk] key_buffer = 16M !includedir /etc/mysql/conf.d/

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  • linux networking: how to redirect incoming connections from old server to new server?

    - by aliz
    hi I'm in the process of moving my old server to a new server, but i will keep the old server running for database replication and load balancing, etc. each server has a separate internet connection with a static ip, and they are connected through a local Ethernet connection. I've got Ubuntu 8.04 32-bit running on old server and Debian 6.0 64-bit on new one. shorewall firewall is installed on both servers. there are some outdoor devices which are periodically sending data to port 43597 for old server IP address. I can run multiple instances of the network service which is responsible for receiving data from devices on a server but on different ports. here's the question: how can I run the service on new server and have connections coming to old server redirected to it, and new devices can still connect to new server's IP address preferably on the same port and same service? until all devices get updated to send to new server. I've tried a shorewall DNAT rule, but seems like new server's default route should be changed to ethernet connection, which breaks other things. I also found about redir utility, but still haven't tried it. is there any best practice or simple solution for such a scenario, i'm not aware of? thanks in advance.

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  • RAID5 issue after replacing motherboard and upgrading firmware

    - by 8steve8
    ok so ive had a 4x2TB(samsung HD204UI w/firmware patch) raid5 array working normally for about a month. It was in a h57 gigabyte motherboard using the intel raid with Windows 7 x64. Today I got an intel h67 motherboard, so I upgraded the intel raid drivers to 10.1.0.1008 from 9.6.0.1014, and I'm not sure if i checked after a reboot, but it caused no problems. I swapped in the new dh67 motherboard, and my array status was "failed". 2 of the 4 drives listed themselves as members, while the other two drives listed themselves as non-members. I tried going back to the old h57 mobo, and downgrading the raid drivers, but the issue remains. It's not port dependent, 2 of the drives always come up as non-members regardless of what port or motherboard they are plugged into. This screenshot should show that the SNs match, which raises the question why the software doesn't realize the drive is a member of the array. I'd like to know if anyone has experienced anything similar, and what should I do, can I force the drive to be recognized as a member (without wiping data)?

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  • 403 Forbiden on Apache (CentOS) Server

    - by pouya
    These are my VM setup: HOST: windows 7 ultimate 32bit GUEST: CentOs 6.3 i386 Virtualization soft: Oracle virtualBox 4.1.22 Networking: NAT -> (PORT FORWARD: HOST:8080 => GUEST:80) Shared Folder: centos all the project files goes into shared folder and for each project file a virtualhost conf file is created in /etc/httpd/conf.d/ like /etc/httpd/conf.d/$domain I wasn't able to see anything in my browser before disabling both windows firewall and iptables in centos after that if i type for example: http://www.$domain:8080/ all i see is: Forbidden You don't have permission to access / on this server. Apache/2.2.15 (CentOS) Server at www.$domain.com Port 8080 A sample Virtual Host conf file: <VirtualHost *:80> #General DocumentRoot /media/sf_centos/path/to/public_html ServerAdmin webmaster@$domain ServerName www.$domain ServerAlias $domain *.$domain #Logging ErrorLog /var/log/httpd/$domain-error.log CustomLog /var/log/httpd/$domain-access.log combined #mod rewrite RewriteEngine On RewriteLog /var/log/httpd/$domain-rewrite.log RewriteLogLevel 0 </VirtualHost> centos shared folder is availabe to guest at /media/sf_centos These are file permissons for sf_centos: drwxrwx--- root vboxsf vboxsf group includes: apache and root So these are my questions: 1- How to solve Forbidden Problem? 2- How to setup both host and guest firewalls? 3- How can i improve this developement environment to simulate production environment as much as possible specially security improvements?

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  • Server Intermittently Inaccessible Externally (but Accessible Internally Continuously)

    - by nicorellius
    I have a CRM on a server on a network. We have a static IP and another server outward facing. We use port-forwarding to map to the CRM, so that when you go to the IP or the FQDN, you get to the CRM: xxx.xxx.xxx.xxx crm.example.com Internally, we can access the CRM by going to crm or crm.example.com Lately, I've been noticing that accessing the server from outside the network times out or gives 503, bad gateway. During that time, I can also SSH (different port, so this works) into the outward facing computer and access the server just fine. I have a robot monitoring the site and indeed via HTTP monitoring the site is going down periodically. I looked through the Apache server access and error logs and nothing stuck out at me so I'm a bit confused as to what could be going on. I also searched the access logs for 503 and found nothing. When I run tracert from outside the network, it appears the packets basically make it through the wider area servers (Comcast city and county servers) and end up dropping at the CRM server's front step. I'm tempted to replace the server because it is older and underpowered but it would be nice to know what is going on. Any ideas what to do next?

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  • How do I tell Websphere 7 about a front end load balancer so that re-directs are handled correctly?

    - by TiGz
    On WebLogic 11G I can use the console to set the FrontendHost and FrondendPort on a server or on a cluster so that re-directs are handled correctly and end up resolving to the front end load balancer instead of the local host. The MBeans associated with this on WebLogic are, for example: MBean Name com.bea:Name=AdminServer,Type=WebServer,Server=AdminServer Attribute Name FrontendHost Description The name of the host to which all redirected URLs will be sent. If specified, WebLogic Server will use this value rather than the one in the HOST header. Sets the HTTP frontendHost Provides a method to ensure that the webapp will always have the correct HOST information, even when the request is coming through a firewall or a proxy. If this parameter is configured, the HOST header will be ignored and the information in this parameter will be used in its place. Type java.lang.String Readable / Writable RW How is the same thing achieved under Websphere 7? Follow up info: So I have 2 use cases actually. One is that I have a web app running under WebSphere on host A on port 9002 and a LB running on host B at port 80, when I visit the home page of the app via the LB on http://hostb/app the app redirects my browser to http://hostb:9002/app and it 404's I think this is WebSphere's fault but I guess it could be the app's fault? The second is that the web app in question needs to send emails containing URls that the customer can click on to get back into the web app - obviously this needs to be via the LB. On WebLogic the app uses MBeans to derive the LB url and I was hoping to use a similar mechanism on WebSphere.

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  • How to setup apache to catch a proxy_pass from nginx?

    - by Paté
    I have a working apache vhost such as <VirtualHost localhost:10006> DocumentRoot "/home/pate/***/git/kohana_site/public/site/" </VirtualHost> <VirtualHost *:10006> ServerName api.* DocumentRoot "/home/pate/***/git/kohana_site/public/api/" LogLevel debug </VirtualHost> If i point to localhost:10006 I get my website and api.localhost:10006 I get my api. Then I have haproxy setup on top of that, that runs on port 10010 and both localhost:10010 and api.localhost:10010 have the expected behaviour. Now I have nginx setup on port 80 with this configuration. server { listen 10000; server_name api.*; location / { proxy_pass http://legacy_server; } } server { listen 10000 default; server_name _; location /nginx_status { stub_status on; access_log off; } # images are accessed via the CDN over HTTP (not https) location /n/image { proxy_pass http://image_caching_server; } location / { return 301 https://$host:10014$request_uri; } } upstream legacy_server { server localhost:10010 fail_timeout=0; } the problem is that apache does not recognize the vhost properly and redirects api.localhost to the website instead of the api. I tried playing with set_proxy_header Host $host but it doesn't seem to do anything.

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  • Embedded Windows XP

    - by Kyle
    My company acquired a brake press for bending large structural steel plates. We received it second hand and it came with an embedded copy of windows XP. Now for the part that's driving me nuts: plug and play has been turned off, also accessibility options has been disabled. What does this mean for me? Keyboards will not work! Nothing that plugs into a USB port will work and it does not have a CD ROM drive. I have tried to turn on plug and play using the on screen keyboard but it is not there since accessibility options is turned off. I would just get an updated copy of the the embedded OS but they come from Sweden and are extremely expensive. I assume there has got to be a way to get a USB devices to work. We need to get a wifi adapter on it so I can use team viewer and remotely configure it for our needs. Things to keep in mind: There is no keyboard so everything has to be done with the mouse There is no PS2 port for a keyboard just a mouse. Odd. I am 5 states away from this location and have been working with a tech who is physically installing the machine. System 32 seems to be missing A LOT of files, the tech told me there is only 8 folders in there and no other files (I don't even understand how Windows is running like this). If anyone has ANY ideas I would appreciate it, I am unsure where to go from here.

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  • How to setup bindings for development IIS 7.5 with lot of sites

    - by Antonio Bakula
    I am a programmer in a small ASP.NET shop with very little expirience in server administration, and I have to setup IIS 7.5 to host lot of sites on newly installed windows server 2008 R2, these sites are test "clones" for sites on "real" web server and they should be accessible only in local network (domain). Developers should add new sites for our new customers. Project managers use this server to check progress and test new sites and new features, QA people have to have access to this site and test before we copy it to the "real" web server. Developers only have access to IIS console, in fact they can use RDP to test server with their developer domain credentials and permissions, also developers are local admins on that machine (tester). On our previous server I used different port numbers for each site. That worked but don't like this solution, I would prefer to use subdomains. But here are the problems: manually adding DNS records is not an option because we do not wont that developers have to administer domain DNS server, and currently this had to be done with domain administrator credentials. Is there a some way to add DNS record automatically ? I tried to add DNS record for subdomains on test server with wildcard (*.tester) and that seems to work for some time but that change coused some bad problems in our domain network and admin forbid me to mess with DNS, he said that I have to add DNS record for every subdomain manually and that I can not use wildcards, and there is nothing that I can do about it, mainly for "politicall" reasons :( obviously our admin is pretty much uncooperative, outsorced from different organization and I can't do anything about that. can I add another DNS server on that machine ? What must be setup on clients machines to "tell" them to use domain DNS server and tester domain server ? So please I need someone to give me some advice, what should I do ? Is different port numbers only option left ? Thanks !

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  • Windows 7 does not detect my new hard drive?

    - by jasondavis
    I just built a really nice new PC. Some specs... Intel i7-930 CPU ASRock Extreme X58 motherboard with sata 3 and USB 3.0 12gb of G-Skill DDR3 RAM 80gb Intel G2 Solid state drive for Windows 7 and other programs to run on Windows 7 Pro 64bit OS 2 1gb grapghic cards for 4 monitor support Thats the main components. Well today my new 1tb western digital hard drive came which I plan to use for data to preserve the life of my SSD (hopefully). I hooked up it's sata power input and then hooked up it's sata data cable to a sata 2 port on my motherboard, I boot windows 7 and go into my computer and the drive is not showing up with my other drives. I then re-boot again and check again, no luck. I then shut down the PC and open the case back up, I then check my connections and they all look good. I then boot up and I can see the new HD is on and spinning. I then go into my BIOS settings to see if it registers there and it DOES! It shows I have a WD 1tb hard drvie on sata 2 port 6. So I am at a loss of why it is not showing up as an option in windows? Windows acts as if the drive is not there. Please help

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  • Cannot make bind9 forward DNS query to subdomain unless recursive enabled

    - by PP.
    I am trying to develop my own dynamic DNS. I'm running my own custom DNS for the subdomain on port 5353. ASCII diagram: INET --->:53 Bind 9 --->:5353 node.js | V zone_files I have example.com. The node.js DNS is for dyn.example.com. In my /etc/bind/named.conf.local I have: zone "example.com" { type master; file "/etc/bind/db.com.example"; allow-transfer { zonetxfrsafe; }; }; zone "dyn.example.com" IN { # DYNAMIC type forward; forwarders { 127.0.0.1 port 5353; }; forward only; }; I've even gone so far as to add a NS in my example.com zone file: $TTL 86400 @ IN SOA ns.example.com. hostmaster.example.com. ( 2013070104 ; Serial 7200 ; Refresh 1200 ; Retry 2419200 ; Expire 86400 ) ; Negative Cache TTL ; NS ns ; inet of our nameserver ns A 1.2.3.4 ; NS record for subdomain dyn NS ns When I attempt to get a record from the subdomain server it doesn't get forwarded: dig @127.0.0.1 test.dyn.example.com However if I turn recursive on in /etc/bind/named.conf.options: options { recursion yes; } .. then I CAN see the request going to the subdomain server. But I don't want recursion yes; in my Bind configuration as it is poor security practice (and allows all-and-sundry requests that are not related to my managed zones). How does one forward (proxy) zone queries for just one zone? Or do I give up on Bind altogether and find a DNS server that can actually forward specific queries?

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  • MSMQ on Win2008 R2 won't receive messages from older clients

    - by Graffen
    I'm battling a really weird problem here. I have a Windows 2008 R2 server with Message Queueing installed. On another machine, running Windows 2003 is a service that is set up to send messages to a public queue on the 2008 server. However, messages never show up on the server. I've written a small console app that just sends a "Hello World" message to a test queue on the 2008 machine. Running this app on XP or 2003 results in absolutely nothing. However, when I try running the app on my Windows 7 machine, a message is delivered just fine. I've been through all sorts of security settings, disabled firewalls on all machines etc. The event log shows nothing of interest, and no exceptions are being thrown on the clients. Running a packet sniffer (WireShark) on the server reveals only a little. When trying to send a message from XP or 2003 I only see an ICMP error "Port Unreachable" on port 3527 (which I gather is an MQPing packet?). After that, silence. Wireshark shows a nice little stream of packets when I try from my Win7 client (as expected - messages get delivered just fine from Win7). I've enabled MSMQ End2End logging on the server, but only entries from the messages sent from my Win7 machine are appearing in the log. So somehow it seems that messages are being dropped silently somewhere along the route from XP or 2003 to my 2008 server. Does anyone have any clues as to what might be causing this mysterious behaviour? -- Jesper

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  • What Logs / Process Stats to monitor on a Ubuntu FTP server?

    - by Adam Salkin
    I am administering a server with Ubuntu Server which is running pureFTP. So far all is well, but I would like to know what I should be monitoring so that I can spot any potential stability and security issues. I'm not looking for sophisticated software, more an idea of what logs and process statistics are most useful for checking on the health of the system. I'm thinking that I can look at various parameters output from the "ps" command and compare to see if I have things like memory leaks. But I would like to know what experienced admins do. Also, how do I do a disk check so that when I reboot, I don't get a message saying something like "disk not checked for x days, forcing check" which delays the reboot? I assume there is command that I can run as a cron job late at night. How often should it be run? What things should I be looking at to spot intrusion attempts? The only shell access is SSH on a non-standard port through UFW firewall, and I regularly do a grep on auth.log for "Fail" or "Invalid". Is there anything else I should look at? I was logging the firewall (UFW) but I have very few open ports (FTP and SSH on a non standard port) so looking at lists of IP's that have been blocked did not seem useful. Many thanks

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  • cheap gigabit switch for small business

    - by neoice
    my friend's business is currently borrowing my Adtran 1224R and is very happy with it. it's configured with a few VLANs to segment customers, internal traffic and public wifi. port 1 is a "trunk" port to the router, a chunky Linux box with iptables+NAT. they push a lot of traffic over the LAN (data backups) and really need gigabit. besides, I'd like my Adtran back :P my goal is to find a cheap(ish) switch that can function as a drop-in replacement. it looks like VLAN trunking is actually part of the 802.1q spec, so anything with VLAN support should cover the current trunk-to-router setup. it's nice to have both a web interface and SSH, but I can configure it either way if needed. things like the Netgear GS724T have caught my eye, but it seems like none of the hardware in the $300-500 range have really solid reviews. I'm concerned that "cheaper" hardware might not work for a network full of power users. does anyone have a recommendation for the Netgear GS724T or a switch that will meet my needs?

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  • Can't ssh from CentOS 6.5 to SUSE LINUX 10.1

    - by Pavel Tankov
    We have a quite old installation of SUSE LINUX 10.1 (i586) in the office. The problem shortly: I can successfully ssh to it from machines in the same LAN (192.168.1.0) and not from others (that are in 10.23.0.0). The SuSE has SSH server openssh-4.2p1-18.12. I have ruled out the firewall and hosts.allow and hosts.deny files. When my ssh login attempt fails, here is what the logs say: on the client: $ ssh -vvv 192.168.1.5 OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.1.5 [192.168.1.5] port 22. debug1: Connection established. debug1: identity file /home/nbuild/.ssh/identity type -1 debug1: identity file /home/nbuild/.ssh/identity-cert type -1 debug1: identity file /home/nbuild/.ssh/id_rsa type -1 debug1: identity file /home/nbuild/.ssh/id_rsa-cert type -1 debug1: identity file /home/nbuild/.ssh/id_dsa type -1 debug1: identity file /home/nbuild/.ssh/id_dsa-cert type -1 on the server: Aug 21 16:34:25 serverhost sshd[20736]: debug3: fd 4 is not O_NONBLOCK Aug 21 16:34:25 serverhost sshd[20736]: debug1: Forked child 20739. Aug 21 16:34:25 serverhost sshd[20736]: debug3: send_rexec_state: entering fd = 7 config len 403 Aug 21 16:34:25 serverhost sshd[20736]: debug3: ssh_msg_send: type 0 Aug 21 16:34:25 serverhost sshd[20736]: debug3: send_rexec_state: done Aug 21 16:34:25 serverhost sshd[20739]: debug1: rexec start in 4 out 4 newsock 4 pipe 6 sock 7 Aug 21 16:34:25 serverhost sshd[20739]: debug1: inetd sockets after dupping: 3, 3 Aug 21 16:34:25 serverhost sshd[20739]: debug3: Normalising mapped IPv4 in IPv6 address Aug 21 16:34:25 serverhost sshd[20739]: Connection from 10.23.1.11 port 44340 The above log on the server is when I enable DEBUG3 log level. However, with the default log level (INFO), the only thing the server logs is this: Aug 21 16:38:32 serverhost sshd[20749]: Did not receive identification string from 10.23.1.11 Any hints? I feel I've tried everything already.

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  • 20 1TB drives vs. 10 2TB drives in RAID5/6 server

    - by Hunter
    Hi everyone, I will be setting up a server at work and I need some advice on some details. The setup will be one blade-type server (8-core, 16GB RAM) with two subsystems - one for the main storage the other to back it up. I'm shooting for a 20TB array (I know it'll be less after formatting and parity drives). So is there any advantage one way or the other with either 20 1TB drives or 10 2TB drives? I'm not sure right now how many controllers I should have either (in the quote I have is a dual-port controller). I would think two controllers for a server of this size would be a better choice than the dual-port controller (but I really don't know). And would an array of this size have any performance issues in RAID 5 or 6 (I know RAID 5 or 6 are "slower" because of all the parity calculations). Also, these will be either WD RE3 (1TB) or the RE4 (2TB). Oh, also, for the backup array would it be ok to use the WD 2TB green drives (also in RAID5 or 6)?

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