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• Windows 2003 - RAS service - VPN client can only connect to server, not internal network

  - by Gk

  Here is my diagram http://imageshack.us/photo/my-images/263/vpnt.png/ Server has two NIC: One connect to Internet, one connect to internal network. RAS service is configured with static IP pool on the same subnet of internal network (10.10.0.x). The problem is when a client connect to server, client can connect to server(10.10.0.10), but cannot connect to another host locate in internal network (10.10.0.11) even cannot ping to 10.10.0.50. RAS configured with IP routing enabled, client connect with options: Use default gateway on remote network. I'm messed up and can not figure out what wrong. Please help me T_T. TIA, giobuon

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• Dediced server for all network functions?

  - by Alan

  I want to set up a fictional network configuration for a school in my neighborhood. They have about 50 computers altogether, 2X20 in computer rooms for students and another 10 scattered around for various professors. They should all access the internet through a dedicated Linux router machine. What they would like is to have domain names for those three computer groups. Lab1, Lab2 and Professors. The computers in Lab2 and Lab1 should have static ip and should all be named by numbers. So there should be 1@Lab1, 2@Lab1.... etc. And the Professors network should have a DHCP, with authentication. Is it an ok solution to have all these functions on a single server? (The one which will be used as a router) Do I have to set a local DNS for domain naming? Do the host names for Lab computers have to be set on the clients, or can they be automatically assigned?

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• TCP > COM1 for receiving messages and displaying on POS display pole

  - by JakeTheSnake

  I currently have a Java Applet running on my web page that communicates to a display pole via COM1. However since the Java update I can no longer run self-signed Java Applets and I figure it would just be easier to send an AJAX request back to the server and have the server send a response to a TCP port on the computer...the computer would need a TCP COM virtual adapter. How do I install a virtual adapter to go from a TCP port to COM1? I've looked into com0com and that is just confusing as hell to me, and I don't see how to connect any ports to COM1. I've tried tcp2com but it doesn't seem to install the service in Windows 7 x64. I've tried com2tcp and the interface seems like it WOULD work (I haven't tested), but I don't want an app running on the desktop...it needs to be a service that runs in the background. So to summarize how it would work: Web page on comp1 sends AJAX request to server Server sends text response to comp1 on port 999 comp1 has virtual COM port listening on port 999, sends data to COM1 pole displays data

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• exim4: multiple domains/IPs

  - by ButterdBread

  On my VPS I have 3 IPs which all have their own domain and their own reverse-DNS records. I have a website on each domain, sending emails. The problem is: the emails are rejected by many hosts because the reverse dns doesn't fit the host in the helo. All the emails are sent from the primary IP and therefore only one of the three domains work. I am looking for a way for exim to check which email adress i'm using to send the email and adapt the domain/IP transmitted in the helo. I have already tried many configurations but nothing has worked up to now. Simply changing MX-Records is impossible too, as I recieve (and also send) email via gmail and I don't want to set up my own webmail. Does anyone know a solution?

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• Unable to install DKIM and SPF on your cPanel/WHM domain. No errors but DKIM test fails

  - by user101597

  The strangest thing.. And I'm pretty sure that the solution is fairly simple.. I'm trying to install DKIM and SPF for one of my domain hosted on a dedicated server with cPanel WHM.. I'm following this tutorial (http://techinterplay.com/enabled-dkim-cpanel-server.html) but the DKIM test is unsuccessful.. Since I host the email for this domain name at Google Apps, I make the DKIM test from a simple php code by using the php mail() function What's causing the failure of the DKIM? Thanks for your help!!

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• AWS:EC2:: Could not connect FTP client?

  - by heathub

  My Server OS: Amazon Linux I am trying to set up ftp. I have: Installed vsftpd open port 20-21 open port 1024 - 1048 Basically, I followed every of these steps Start vsftpd service (the status indicate [ok]) I use filezilla for my ftp client. Here is my setting/configuration: Host: ec2-XX-XX-XXX-XX.compute-1.amazonaws.com Port: -(blank, but I have tried 20 and 21 though) Server Type: FTP - File Transder Protocol Logon Type: Normal Username: (tried root and ec2-user) Transfer mode: Tried passive and active I always has this error: Status: Waiting to retry... Status: Resolving address of ec2-XX-XX-XXX-XX.compute-1.amazonaws.com Status: Connecting to XX.XX.XXX.XX:21... Error: Connection timed out Error: Could not connect to server Have I missed any configuration/settings? EDIT After execute the /sbin/iptables -L -n Here is the result: Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination

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• How to copy symbolic links?

  - by Basilevs

  I have directory that contains some symbolic links: user@host:include$ find .. -type l -ls 4737414 0 lrwxrwxrwx 1 user group 13 Dec 9 13:47 ../k0607-lsi6/camac -> ../../include 4737415 0 lrwxrwxrwx 1 user group 14 Dec 9 13:49 ../k0607-lsi6/linux -> ../../../linux 4737417 0 lrwxrwxrwx 1 user group 12 Dec 9 13:57 ../k0607-lsi6/dfc -> ../../../dfc 4737419 0 lrwxrwxrwx 1 user group 17 Dec 9 13:57 ../k0607-lsi6/dfcommon -> ../../../dfcommon 4737420 0 lrwxrwxrwx 1 user group 19 Dec 9 13:57 ../k0607-lsi6/dfcommonxx -> ../../../dfcommonxx 4737421 0 lrwxrwxrwx 1 user group 17 Dec 9 13:57 ../k0607-lsi6/dfcompat -> ../../../dfcompat I need to copy them to the current directory. The resulting links should be independent from their prototypes and lead directly to their target objects. cp -s creates links to links that is not appropriate behavior. cp -s -L refuses to copy links to directories cp -s -L -r refuses to copy relative links to non-working directory What should I do?

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• how to correctly download tomcat 6 on centos 5.5

  - by user582862

  hi guys, i am a big confused about how to install tomcat 6 on centos 5.5 final. this is what i am trying to do: # cd /etc/yum.repos.d/ # wget http://jpackage.org/jpackage50.repo # yum install tomcat6 tomcat6-webapps tomcat6-admin-webapps but when i type the widget command, this is what i get: Resolving www.jpackage.org... failed: Temporary failure in name resolution. wget: unable to resolve host address `www.jpackage.org' could anyone kindly show me the right way please. really in trouble at the moment with this. thanks in advance.

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• routing weirdness - traceroute 'vanishes' en route

  - by The Journeyman geek

  I'm attempting to set up one of my boxes as a server (again), but i'm having some odd connection issues- the box itself connects fine to the internet, but trying to connect to my external ip address seems to result in the trace getting 'lost' partway. http://pastebin.com/HCQAGbvn - this is a traceroute from another system that's connected to another ISP - starhub is my own one, while i have another system that i have access to on singtel. I'm wondering if my ISP is messing around with routing, or is something very odd going on. As you note, the traceroute dosen't reach me, but if it helps, i use a dd-wrt router. edit: Facepalmishly, turning the firewall on my router on and off fixed it. I don't get why it dropped off at different ip addresses each time, or why the router set it self to block.. everything, or why it affected the ipv6 tunnel as well.

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• Getting started with the vCenter Web Client Administration tool

  - by Saariko

  I am trying to access a newly vCenter. The documentation clearly mentions to access the web-admin through: https://localhost:9443/admin-app but since I don't have a windows OS built under the vCenter (I use the vCenter Appliance) There is no localhost to use. If I try with the host IP I get the error: This PDF explains to install IIS component - But it's ESX 4 - and also not talking about appliance. so, a simple question: how can I access the web-app admin tool? also found a similar question on vmware forum. But I can't understand the solution/if any.

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• ErrorDocument 404 not found in non-existent subdomain

  - by Question Overflow

  I am trying to get the apache server to issue a custom 404 error for invalid subdomains. The following is the relevant part of the httpd configuration: Alias /err/ "/var/www/error/" ErrorDocument 404 /err/HTTP_NOT_FOUND.html.var <VirtualHost *:80> # the default virtual host ServerName site_not_found Redirect 404 / </VirtualHost> <VirtualHost *:80> ServerName example.com ServerAlias ??.example.com </VirtualHost> What I get instead is this: Not Found The requested URL / was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. I don't understand why a URL to non-existent-subdomain.example.com produces a 404 error without custom error as shown above while a URL to eg.example.com/non-existent-file produces the full custom 404 error. Can someone advise on this. Thanks.

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• What is the best way to auto failover to backup WAN link for web server

  - by user66735

  Hi Iam looking for the best way to ensure my server ( application ) remains available for all my users (on web/LAN/WAN ), when my primary ISP link fails. My server is behind a firewall on which both my primary & secondary links land. I have already assigned multiple IPs (both ISP's static IP) to the 'A' record ( host.example.com ) in the DNS. However in a round robin scenario is there a way I can ensure that my web user will not see a "cannot dislay web page" error ever ?? What are the better methods to achieve this??

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• Sniff packets using tcpdump

  - by denisk

  I have a completely noob question. I want to see all packets that come to my computer from particular site (google.com). So I start tcpdump sudo tcpdump -i eth0 host google.com and enter google.com in a browser and hit enter - nothing gets captured. I can't figure out why it happen. What do I do wrong? Edit It appeared that I was listening to the wrong interface. I had changed eth0 to any and it worked. It was ppp1 that needed listening. Thanks for your answers!

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• Are there any tools for monitoring individual Apache virtual hosts in real-time?

  - by Dave Forgac

  I'm looking for a way to monitor and record Apache traffic, separated by virtual host. I am currently using Munin to capture this and other data for the entire server however I can't seem to find a way to do this by vhost. This link describes using a module called mod_watch which is apparently no longer in development: http://www.freshnet.org/wordpress/2007/03/08/monitoring-apaches-virtualhost-with-munin/ The file that is listed as being compatible with Apache 2.x is reported to have problems with missing vhosts an reporting data correctly. Does anyone know of a reliable way to determine real-time traffic per vhost? If I can find this it should be easy enough to write a new Munin plugin.

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• How do I stop someone from saturating my line & wasting CPU cycles

  - by JoshRibs

  My web host shows inbound & outbound traffic with mrtg. I have a steady 3.5mbps inbound traffic from Nigeria. Even assuming the source IPs & destination ports are blocked with Iptables & verifying nothing is listening on those ports, will the traffic still always pass through the switch & "get" to my server (where my server wastes CPU cycles "dropping" the packets)? Assuming I was setup with a hardware firewall, the traffic would still show in mrtg assuming the firewall is behind the switch? So is there any way to stop someone from saturating your 100mbps line, if they also have a 100mbps line? Other than filing an abuse complaint with the kind folks in Nigeria?

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• IPv4 NameVirtualHost, IPv6 VirtualHost

  - by MadHatter

  Like many of us, I have an apache server (2.2.15, plus patches) with a lot of virtual hosts on it. More than I have IPv4 addresses, to be sure, which is why I use NameVirtualHost to run lots of them on the same IPv4 address. I'm busily trying to get everything I do IPv6-enabled. This server now has a routed /64, which gives me an awful lot of v6 addresses to throw around. What I'm trying to find is a simple way to tell each v4-NameVirtualHost that it should also function as a VirtualHost on a unique ipv6 address. I really, really don't want to have to define each virtual host twice. Does anyone know of an elegant way to do this? Or to do something comparable, in case I've embedded any dangerously-ignorant assumptions in my question?

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• Nameserver Problem

  - by Ruel

  I installed Virtualmin GPL with BIND, etc. I created a virtual host for my main domain, and edited the zone file, added the A records for the nameservers ns1.mydomain.com and ns2.mydomain.com. All looks good from the VPS, whenever I do a dig or nslookup, all seems fine, returning correct details. But when I test externally, there are no results. I tried several sites such as intodns, etc. It says my nameservers doesn't point to any IP. I have registered my nameservers with the appropriate IP in my registrar, and I even contacted support to verify this, and they told me that the registration was successful, but when they dig my nameservers, there's no ip address. I can also connect to my server IP's port 53. Also, I know that the DNS propagation is 24-48 hours. But there has to be some server that can return the correct results by now. Please lead me to the right direction, thanks.

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• LAMP server has gone down a few times. Ideas for server optimization?

  - by MattB

  Hi all, Our production web server has gone down a few times over the course of the last half year. In the end, we've needed to contact the web host and have them restart as I'm unable to even SSH in. This appears to only affect the web server and not the MySQL database server which is separate. When it affects the web server, all hosted websites time out. I'd like to examine web server optimization/corrections to get to the root of this issue. Any recommendations on how to proceed with that? I'm sure log files would play a role. I'm able to find my way around a Linux-based server and make needed changes, but would be interested in any tips I may not have thought of yet. It may be best for us to speak with an outside consultant as another option. Thanks.

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• Impossible do find motherboard drivers to Dell Dimension 3000

  - by Masziej

  Hello, I recently formatet and reinstalled XP on my girlfriends computer. Ive had this computer since 2001, never formatet it, until now =) Anyway the problem is that i cant find any drivers for the motherboard (integrated audio, video and ethernet). as i said its an old ass Dell. Cant remember if I got any cds along with it. Even if i did theyre gone a long time ago. So, I ran CPUZ and got this: --Motherboard-- Dell Computer Corp. Model 0K8980 And started googling. But didnt find any drivers. Still cant So im asking for a little help here. I really need to get the computer going before she wants a new one :D And yes i have looked on dells homesite, but they dont seem to wanna host drivers for their old stuff

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• Adobe software does not save to network share

  - by Bart van Heukelom

  I'm running Windows 7 inside virtualbox on a linux host. I have shared my linux filesystem so it's accesible in Windows under \vboxsvr\sharename. I've mounted this share on S:. For most software, it works fine. Adobe software like Photoshop has problems with it though. I can read from S: just fine, but if I try to save something it gives me the message "There are no more files". How can I make it able to write to the share?

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• KVM/Qemu Guest Shutdown problems

  - by Gaia

  on both host and guest running CentOS 6.3 with KVM/Qemu virtualization, I have the following scenarios: "virsh shutdown kvm1" did not shutdown at all. virsh lists guest as running. "service libvirt-guests stop" did not shutdown in 280 seconds (shutdown_timeout=300. on_shutdown=shutdown) "shutdown now" from within guest, guest becomes unreachable. virsh lists guest as running, though it could not connect to it. "shutdown -h now" from within guest works. "shutdown -r now" from within guest works. Libvirt logs show nothing for the first 3 scenarios. I can pause the guest fine. Bottom line, I cannot shutdown from outside the guest. What do I check to figure out what is going on?

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• How do you access usermin

  - by Lobe

  I have recently setup a web server with webmin, virtualmin and usermin on CentOS to host some websites and email, however I am unable to access usermin. I can access webmin from www.foobar.com:10000 but I can't access usermin from www.foobar.com:20000 This thread seems to have dealt within the same issue, however when I tried the command "telnet localhost 20000" it came back with a connection refused message. Any idea how to get this running. I'll let you know in advance that I am a linux newbie and this is a large learning experience, so don't rule out anything if you are thinking "oh, but he wouldn't be dumb enough to forget that" or the like

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• SMTP and IIS maild from my website

  - by RupDog

  Hi, I am using the free version for Google Apps to host my mail. I want to set is so that mail is routed via google apps as this will give me a much better reputation and mail will not go to the spam folder as much. Doe anyone know how this is done? Would I need to setup IIS to do this? The site is writeen in C# ASP.NET. So Could I perhaps just update the web.config file to route mail via google apps?

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• Websocket handshake response not forwarded from TCP to client

  - by Saharsh

  I am trying to create a websocket server. I can see the websocket client's opening handhshake. My response to it is received by the client laptop (I can see this on wireshark). So the TCP connection has been established. But the client (a chrome websocket client extension) does not receive the handshake packet. What could be a possible reason for TCP to not forward the handshake to the client or for the client to not be able to read the TCP message? Client handshake: GET HTTP/1.1 Upgrade: websocket Connection:Upgrade Cache-Control:no-cache Host:192.168.0.101 Origin:http://www.websocket.org Pragma:no-cache Sec-WebSocket-Extensions:permessage-deflate; client_max_window_bits, x-webkit-deflate-frame Sec-WebSocket-Key: qrmw/m+BoZije6h9HYKmVw== Sec-WebSocket-Version:13 Upgrade:websocket Server Response: HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: jj1g5Io57m9ks8cme3jkbyo2asc= Access-Control-Allow-Origin: http://www.websocket.org Server: xyz Sec-WebSocket-Extensions: Thanks!

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• Lighttpd referer issue

  - by Chris

  I have a problem to block files from accessing from different domains as my one. I have added to my lighty config in the "virual host" following: $HTTP["referer"] !~ "^($|http://www\.my-site\.net)" { url.access-deny = ( "" ) } but anyway the site www.example.com can access http://player.my-site.net/player.swf, also it can be accessed directly without a referrer. any idea? //EDIT here is my old apache .htaccess with a rewrite rule thats works perfect, but i dont know how to convert it for lighty: RewriteEngine on RewriteBase / RewriteCond %{HTTP_REFERER} !^http://my-site\.net/ [NC] RewriteCond %{HTTP_REFERER} !^http://www\.my-site\.net/ [NC] RewriteCond %{HTTP_REFERER} !^http://player\.my-site\.net/ [NC] RewriteCond %{HTTP_REFERER} !^http://stream\.my-site\.net/ [NC] RewriteRule .* - [L,R=404]

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