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• SPF record for Gmail?

  - by Chris

  I have DNS, with a SPF TXT record, configured for a domain name. The primary user of the domain name now needs to be able to send both from our SMTP servers, and also from her GMail account. I've seen all the information about adding "include:_spf.google.com" to the SPF TXT record, but, as I look into it, it appears that record is outdated. In particular, I had the user send me a test message, and note that it was: Received: from mail-la0-f50.google.com (mail-la0-f50.google.com [209.85.215.50]) However, _spf.google.com doesn't list that IP address: $ dig +short _spf.google.com txt "v=spf1 ip4:216.239.32.0/19 ip4:64.233.160.0/19 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:209.85.128.0/17 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:64.18.0.0/20 ip4:207.126.144.0/20 ip4:173.194.0.0/16 ?all" (Note that a 209.85.21*8*.0 network is listed, but not 209.85.21*5*.0.) Is there a better way to enable sending from GMail? This user sends to at least one recipient with a strict SPF policy that bounces mail not from a designated host... Many thanks!

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• can't figure out why apache LDAP auth fails

  - by SethG

  Suddenly, yesterday, one of my apache servers became unable to connect to my LDAP (AD) server. I have two sites running on that server, both of which use LDAP to auth against my AD server when a user logs in to either site. It had been working fine two days ago. For reasons unknown, as of yesterday, it stopped working. The error log only says this: auth_ldap authenticate: user foo authentication failed; URI /FrontPage [LDAP: ldap_simple_bind_s() failed][Can't contact LDAP server], referer: http://mysite.com/ I thought perhaps my self-signed SSL cert had expired, so I created a new one for mysite.com, but not for the server hostname itself, and the problem persisted. I enabled debug-level logging. It shows the full SSL transaction with the LDAP server, and it appears to complete without errors until the very end when I get the "Can't contact LDAP server" message. I can run ldapsearch from the commandline on this server, and I can login to it, which also uses LDAP, so I know that the server can connect to and query the LDAP/AD server. It is only apache that cannot connect. Googling for an answer has turned up nothing, so I'm asking here. Can anybody provide insight to this problem? Here's the LDAP section from the apache config: <Directory "/web/wiki/"> Order allow,deny Allow from all AuthType Basic AuthName "Login" AuthBasicProvider ldap AuthzLDAPAuthoritative off #AuthBasicAuthoritative off AuthLDAPUrl ldaps://domain.server.ip/dc=full,dc=context,dc=server,dc=name?sAMAccountName?sub AuthLDAPBindDN cn=ldapbinduser,cn=Users,dc=full,dc=context,dc=server,dc=name AuthLDAPBindPassword password require valid-user </Directory>

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• exim4 to relay emails

  - by Matthieu

  I have exim4 installed on a Linux box. The basics work fine and I can send email from that machine without any problem to whatever email address. I also have a printer/scanner which is capable to send scans as emails. It needs an SMTP gateway to be able to do that. So I give the IP address of that Linux box, changed the configuration a little bit but still cannot get it to work. After I run dpkg-reconfigure exim4-config, here is what I get in /etc/exim4/update-exim4.conf.conf : dc_eximconfig_configtype='internet' dc_other_hostnames='' dc_local_interfaces='127.0.0.1;192.168.2.2' dc_readhost='' dc_relay_domains='mycompanyemail.com' dc_minimaldns='false' dc_relay_nets='192.168.2.0/24' dc_smarthost='' CFILEMODE='644' dc_use_split_config='false' dc_hide_mailname='' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' My problem is that with this configuration, I can only send to emails @mycompanyemail.com... It says I can use wildcard, but when I do that, the '*' is replaced by whatever filename is in the directory where I run all that. How can I configure it to be able to send emails with any domain ? Or am I doing it wrong ? EDIT : here is the part of the log that's causing trouble : 2011-08-03 16:28:18 H=(NPI2D389C) [192.168.2.20] F=<[email protected]> rejected RCPT <[email protected]>: relay not permitted The first part ([email protected]) does not matter. I changed the email address. The point is that if this email is @mycompanyemail.com then everything works fine. Anything else does not work. I could add gmail.com, but I am looking to have any domain working...

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• VPN on OSX disconnects after precisely 2 minutes and 30 seconds on specific network

  - by Tyilo

  When connecting to my own VPN server on a specific network, called public-network, my Mac disconnects the VPN connection after 2 minutes and 30 seconds. I have performed several tests and this is the result: It works fine until the 2:30 mark It doesn't matter which Mac I use, it still disconnects It doesn't matter which client I use, all of the following does the same: OSX system client, HMA! Pro VPN and Shimo It doesn't matter which protocol I use, at least all of these protocols does the same: PPTP, OpenVPN and L2TP over IPSec The same thing happens using my own VPN server and HMA!'s VPN server. All other clients (Windows/iPhone) can use any of these VPN servers and protocols without problem on public-network On OSX, all the protocols, clients and servers works fine on any other network So it seems that it is the combination of OSX, VPN & public-network that causes this. This is the syslog from my VPN server, when the disconnection happens: Feb 2 12:04:32 raspberrypi pptpd[31400]: CTRL: EOF or bad error reading ctrl packet length. Feb 2 12:04:32 raspberrypi pptpd[31400]: CTRL: couldn't read packet header (exit) Feb 2 12:04:32 raspberrypi pptpd[31400]: CTRL: CTRL read failed Feb 2 12:04:32 raspberrypi pptpd[31400]: CTRL: Reaping child PPP[31401] Feb 2 12:04:32 raspberrypi pppd[31401]: Hangup (SIGHUP) Feb 2 12:04:32 raspberrypi pppd[31401]: Modem hangup Feb 2 12:04:32 raspberrypi pppd[31401]: Connect time 2.5 minutes. Feb 2 12:04:32 raspberrypi pppd[31401]: Sent 3963649 bytes, received 362775 bytes. Feb 2 12:04:32 raspberrypi pppd[31401]: MPPE disabled Feb 2 12:04:32 raspberrypi pppd[31401]: Connection terminated. Feb 2 12:04:32 raspberrypi pppd[31401]: Exit. Feb 2 12:04:32 raspberrypi pptpd[31400]: CTRL: Client <ip-adress> control connection finished

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• fax server farm architechture

  - by Brian Postow

  I'm not sure this is the right forum for this, but it's not Stackoverflow so... I'm trying to figure out an architecture to solve the following problem, maybe someone here can help: I have a T1 with 23 fax lines coming into the building. I have a computer (Macintosh XServe) running Hylafax. If I had one POTS line, I'd be done. However, I have no idea how to get the T1 into the Mac... Options I've considered: some sort of PCI T1-modem (Does that exist?) Splitting the T1 into 23 POTS lines and then connecting 23 analog modems to the mac, either via an external modem bank (Do they still make those?) or via some sort of external PCI bank, which will allow me to use more than 2 4-port modem cards. Either the T1 or the split POTS lines going into some intermediate device and then transfering the images over IP, or USB to the mac. Really, any other option I can come up with This has GOT to be a problem that someone has already solved, right?

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• How can I use two Internet connections in Ubuntu?

  - by Martin

  My goal is to be able to do something like this: curl google.com --interface ppp0 curl google.com --interface p2p2 ppp0 is a DSL connection, and p2p2 is a separate direct Internet connection. Currently I can only get one of these to work at a time. When I enable one, the other one stops working. /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback # DSL auto p2p1 iface p2p1 inet manual auto dsl-provider iface dsl-provider inet ppp pre-up /sbin/ifconfig p2p1 up # line maintained by pppoeconf provider dsl-provider # DIRECT auto p2p2 iface p2p2 inet dhcp ifconfig: lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 p2p1 Link encap:Ethernet inet6 addr: fe80::20a:ebff:fe21:99c6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 p2p2 Link encap:Ethernet inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20a:ebff:fe17:1249/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 ppp0 Link encap:Point-to-Point Protocol inet addr:53.193.231.167 P-t-P:53.193.224.1 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1 route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 10.0.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2 53.193.224.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 p2p2 By default, only ppp0 works. If I run "route add default gw 192.168.1.1 p2p2" then I can use p2p2 but ppp0 stops working. If I then run "route add default gw 53.193.224.1 ppp0" then I can use ppp0 again but p2p2 stops working. What can I do to be able to use both interfaces selectively?

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• Limit bandwith on network of computers

  - by Joseph34123

  We have network in office of approximately 10 computers sometimes when someone downloads something for work (e.g. syncing email with an attachment or Dropbox), everyone slows down. I could limit each computer in office but the problem is that we have an open WiFi network, and I cannot access the computers that use it. We have one main DSL router "Netopia 3347" and another router connected to it on wire for public wifi is "Linksys WRT110". I cannot change the setup we have and don't want to. There's 2 approaches here: Set office computers download limit in each computer and then I need to find out how I can set a download limit for the wifi network such as in the router settings. It's a Linksys router and I did not see the option for this, so maybe I need new router for WiFi? Don't bother with each computer and put some "specific hardware" or another computer before router so all traffic goes trough it and I can then assign priority maximum speed for each IP address. Question is what hardware do I need?

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• Setting Up Apache as a Forward Proxy with Cahcing

  - by Karl

  I am trying to set up Apache as a forward proxy with caching, but it does not seem to be working correctly. Getting Apache working as a forward proxy was no problem, but no matter what I do it is not caching anything, to disk or memory. I already checked to make sure nothing is conflicting in the mods_enabled directory with mod_cache (ended up commenting it all out) and also I tried moving all of the caching related fields to the configuration file for mod_cache. In addition I set up logging for caching requests, but nothing is being written to those logs. Below is my Apache config, any help would be greatly appreciated!! <VIRTUALHOST *:8080> ProxyRequests On ProxyVia On #ErrorLog "/var/log/apache2/proxy-error.log" #CustomLog "/var/log/apache2/proxy-access.log" common CustomLog "/var/log/apache2/cached-requests.log" common env=cache-hit CustomLog "/var/log/apache2/uncached-requests.log" common env=cache-miss CustomLog "/var/log/apache2/revalidated-requests.log" common env=cache-revalidate CustomLog "/var/log/apache2/invalidated-requests.log" common env=cache-invalidate LogFormat "%{cache-status}e ..." # This path must be the same as the one in /etc/default/apache2 CacheRoot /var/cache/apache2/mod_disk_cache # This will also cache local documents. It usually makes more sense to # put this into the configuration for just one virtual host. CacheEnable disk / #CacheHeader on CacheDirLevels 3 CacheDirLength 5 ##<IfModule mod_mem_cache.c> # CacheEnable mem / # MCacheSize 4096 # MCacheMaxObjectCount 100 # MCacheMinObjectSize 1 # MCacheMaxObjectSize 2048 #</IfModule> <Proxy *> Order deny,allow Deny from all Allow from x.x.x.x #IP above hidden for this post <filesMatch "\.(xml|txt|html|js|css)$"> ExpiresDefault A7200 Header append Cache-Control "proxy-revalidate" </filesMatch> </Proxy> </VIRTUALHOST> Thank you once again!

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• Access Denied / Server 2008 / Home Directories

  - by Shaun Murphy

  Domain Controller: BDC01 (192.168.9.2) Storage Server: BrightonSAN1 (192.168.9.3) Domain: brighton.local Last night I moved our users home directories off of our Domain Controller onto a storage server using the MS FSMT. I'm getting a mixed bag of errors. The first being some users cannot logon properly, they can't access the logon.vbs in the sysvol folder on the DC and consequently cannot map their drives. I've narrowed that down to a DNS issue as we there was a remnant of our previous DNS server in the DHCP server options and scope options. I'm able to get their drives remapped by browsing to the sysvol folder by IP address as opposed to Computer Name and manually running the logon.vbs script. The other error I'm getting is Access Denied on a few of the users home directories. The top level folder (Home) is shared as normal and I've removed and re-added the NTFS security a number of times now including making the user the owner with full control. I've checked each and every individual file and folder in said users home directory and they are indeed the owner but I'm unable to write but I can read the contents. I'm stumped. This isn't happening to all clients. I'm considering removing their AD accounts, backing up their folders and readding them as a last resort but obviously I'd like to know why the above errors are happening.

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• nginx reverse ssl proxy with multiple subdomains

  - by BrianM

  I'm trying to locate a high level configuration example for my current situation. We have a wildcard SSL certificate for multiple subdomains which are on several internal IIS servers. site1.example.com (X.X.X.194) -> IISServer01:8081 site2.example.com (X.X.X.194) -> IISServer01:8082 site3.example.com (X.X.X.194) -> IISServer02:8083 I am looking to handle the incoming SSL traffic through one server entry and then pass on the specific domain to the internal IIS application. It seems I have 2 options: Code a location section for each subdomain (seems messy from the examples I have found) Forward the unencrypted traffic back to the same nginx server configured with different server entries for each subdomain hostname. (At least this appears to be an option). My ultimate goal is to consolidate much of our SSL traffic to go through nginx so we can use HAProxy to load balance servers. Will approach #2 work within nginx if I properly setup the proxy_set_header entries? I envision something along the lines of this within my final config file (using approach #2): server { listen Y.Y.Y.174:443; #Internally routed IP address server_name *.example.com; proxy_pass http://Y.Y.Y.174:8081; } server { listen Y.Y.Y.174:8081; server_name site1.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer01:8081; } server { listen Y.Y.Y.174:8081; server_name site2.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer01:8082; } server { listen Y.Y.Y.174:8081; server_name site3.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer02:8083; } This seems like a way, but I'm not sure if it's the best way. Am I missing a simpler approach to this?

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• svn using nginx Commit failed: path not found

  - by Alaa Alomari

  I have built svn server on my nginx webserver. my nginx configuration is server { listen 80; server_name svn.mysite.com; location / { access_log off; proxy_pass http://svn.mysite.com:81; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; include fastcgi_params; } } Now, i can svn co and svn up normally without having any problem and when i try to commit i get error: $svn up At revision 1285. $ svn info Path: . URL: http://svn.mysite.com/elpis-repo/crons Repository Root: http://svn.mysite.com/elpis-repo Repository UUID: 5303c0ba-bda0-4e3c-91d8-7dab350363a1 Revision: 1285 Node Kind: directory Schedule: normal Last Changed Author: alaa Last Changed Rev: 1280 Last Changed Date: 2012-04-29 10:18:34 +0300 (Sun, 29 Apr 2012) $svn st M config.php $svn ci -m "Just a test, add blank line to config" config.php Sending config.php svn: Commit failed (details follow): svn: File 'config.php' is out of date svn: '/elpis-repo/!svn/bc/1285/crons/config.php' path not found if i try to svn co on port 81 (my proxy_pass which is apache) and then svn ci, it will work smoothly! but why it doesn't work when i use nginx to accomplish it? any idea is highly appreciated.

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• Mod_rewrite is ignoring the extension of a file

  - by ngl5000

  This is my entire mod_rewrite condition: <IfModule mod_rewrite.c> <Directory /var/www/> Options FollowSymLinks -Multiviews AllowOverride None Order allow,deny allow from all RewriteEngine On # force www. (also does the IP thing) RewriteCond %{HTTPS} !=on RewriteCond %{HTTP_HOST} !^mysite\.com [NC] RewriteRule ^(.*)$ http://mysite.com/$1 [R=301,L] RewriteCond %{REQUEST_URI} ^system.* RewriteRule ^(.*)$ /index.php?/$1 [L] RewriteCond %{REQUEST_URI} ^application.* RewriteRule ^(.*)$ /index.php?/$1 [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.+)\.(\d+)\.(js|css|png|jpg|gif)$ $1.$3 [L] RewriteCond %{THE_REQUEST} /index\.(php|html) RewriteRule (.*)index\.(php|html)(.*)$ /$1$3 [r=301,L] RewriteCond %{REQUEST_URI} !^(/index\.php|/assets|/robots\.txt|/sitemap\.xml|/favicon\.ico) RewriteRule ^(.*)$ /index.php/$1 [L] # Block access to "hidden" directories or files whose names begin with a period. This # includes directories used by version control systems such as Subversion or Git. RewriteCond %{SCRIPT_FILENAME} -d [OR] RewriteCond %{SCRIPT_FILENAME} -f RewriteRule "(^|/)\." - [F] </Directory> </IfModule> It is suppose to allow only access to mysite.com(/index.php|/assets|/robots.txt|/sitemap.xml|/favicon.ico) The error was noticed with: mysite.com/sitemap vs mysite.com/sitemap.xml Both of these addresses are resolving to the xml file while the first url should be resolving to mysite.com/index.php/sitemap * For some reason mod_rewrite is completely ignoring the lack of an extension. It sounded like a Multiviews problem to me so I disabled Multiviews and it is still going on. ***And then a different rule will eventually take the index.php out, I am having another problem with an extra '/' being left behind when this happens. This httpd file is setting up for my codeigniter php framework

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• Vyatta masquerade out bridge interface

  - by miquella

  We have set up a Vyatta Core 6.1 gateway on our network with three interfaces: eth0 - 1.1.1.1 - public gateway/router IP (to public upstream router) eth1 - 2.2.2.1/24 - public subnet (connected to a second firewall 2.2.2.2) eth2 - 10.10.0.1/24 - private subnet Our ISP provided the 1.1.1.1 address for us to use as our gateway. The 2.2.2.1 address is so the other firewall (2.2.2.2) can communicate to this gateway which then routes the traffic out through the eth0 interface. Here is our current configuration: interfaces { bridge br100 { address 2.2.2.1/24 } ethernet eth0 { address 1.1.1.1/30 vif 100 { bridge-group { bridge br100 } } } ethernet eth1 { bridge-group { bridge br100 } } ethernet eth2 { address 10.10.0.1/24 } loopback lo { } } service { nat { rule 100 { outbound-interface eth0 source { address 10.10.0.1/24 } type masquerade } } } With this configuration, it routes everything, but the source address after masquerading is 1.1.1.1, which is correct, because that's the interface it's bound to. But because of some of our requirements here, we need it to source from the 2.2.2.1 address instead (what's the point of paying for a class C public subnet if the only address we can send from is our gateway!?). I've tried binding to br100 instead of eth0, but it doesn't seem to route anything if I do that. I imagine I'm just missing something simple. Any thoughts?

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• JavaScript is not pointing correctly on IIS7 running behind Apache mod_proxy

  - by sohum

  So here's my setup. I've got a DynDNS account since I have a dynamic IP. I have Apache listening on port 80 and IIS7 on port 8080. I don't want users to have to enter in mydyndns.dyndns.com:8080 to get to IIS7, so I've added the following code to my Apache httpd.conf file to enable a proxy/reverse proxy: <VirtualHost *:80> ProxyPass / http://localhost:8080/myASPSite/ ProxyPassReverse / http://localhost:8080/myASPSite/ ServerName myaspsite.mydomain.com </VirtualHost> I've got a CNAME record set up on my DNS so that myaspsite.mydomain.com redirects to mydyndns.dyndns.com. When I type in myaspsite.mydomain.com into my browser, everything works beautifully... mostly. IIS7 serves up the ASPX pages and visitors to the site don't know any better. A problem arises, however, when I add Ajax Control Toolkit controls into my ASPX website, because these generate JavaScript and apparently mod_proxy_html isn't geared to handle the JS URIs properly. Sure enough, when I open up the source of my ASPX page, it has script elements as follows: <script src="/myASPSite/WebResource.axd?xyz" type="text/javascript"></script> <script src="/myASPSite/ScriptResource.axd?xyz" type="text/javascript"></script> Sure enough, these scripts are attempting to be resolved at http://myaspsite.mydomain.com/myASPSite/WebResource..., which through the proxy translates to localhost:8080/myASPSite/myASPSite/.... How can I solve this problem. The couple of websites I found suggested turning on ProxyHTMLExtended but when I tried doing that, the server did not start. I'm guessing I didn't know how to do it properly. Anyone has a handy couple of config lines that I can add to my Apache conf file to get this working as I need? I'm using Apache 2.2.11. Thanks!

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• BGP path prepended route not listed anywhere

  - by Julien Vehent

  We have a simple multi-homed setup with two routers that advertise our AS to two ISP. The second ISP (ISP B) is only used for backup when ISP A goes down, so we prepended our AS 3 times on this route. I spend a couple of hours this morning poking at looking glass routers all over the internet, and none of them list our backup route with the prepended path. I checked the south african internet exchange, the london internet exchange, oregon internet exchange and a couple dozen ISPs. All of them have multiples routes through ISP A, often with 3 or 4 hops. The route through ISP B should, at least, appear somewhere and have 5 or 6 hops. But I couldn't find it anywhere. (I checked the full bgp tables on the looking glass routers, using show ip bgp 65000) My questions are: Is there a limit to the size of a route after which most routers will simply discard the route ? Is our backup route even going to work when ISP A goes down, if no router knows about it ? Our two routers are connected on iBGP. Would it be possible that the route through ISPB is not announced because the iBGP session prefers the route through ISPA ? This is what non-exist-map and advertise-map are supposed to do, but none of those are used in either routers.

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• VMware ARP/Mac Networking

  - by Ross Wilson

  Hi Guys, I am very interested in how VMware networking works. I have scoured the VMware website and read their data sheets, this has given me some basic knowledge. I now have some questions. Lets assume that we have a physical server running the VMware hypervisor. The physical server is running a Virtual Machine. The physical box has one physical NIC. The NIC is connected to a switch, as so is a desktop client. Now, this is where my first question lies. The VM has an IP address: 192.168.1.1. How do desktop clients on the network communicate with this VM? So, the client pings 192.168.1.1. The ping packet is sent to the switch. The switch checks its MAC address table and sees that 192.168.1.1 is associated with the MAC address of the physical NIC. Correct? I then assume that the ping packet is sent to the server's physical NIC, where the hypervisor routes the packet to the VM thats using 192.168.1.1? Please could you give me a run down as to how VM networking works? Many thanks, Ross

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• SQL Server Analysis Services, DNS, AD, Kerberos, Connection Issues

  - by ScaleOvenStove

  Running into a very weird issue. Converting servers to Windows 2008/SQL 2008. Have a server, SERVER_A, brand new, setup with Win2k8,Sql2k8 - works. Have a Server SERVER_B, running Windows2003/SQL2005. I want to migrate from SERVER_B to SERVER_A. I have all db's, cubes, etc setup on SERVER_A and it is mimicking functionality. Since users are using Excel to connect to SSAS, they connection string has SERVER_B in it. What I want to do, is, change DNS on the network to point SERVER_B (by name) at the ip of SERVER_A. I have successfully done this with another server, SERVER_C, but I need to do it with SERVER_B. What I have found is that with SERVER_C, after changing DNS, had to remove SERVER_C from AD and then it worked. I could connect to SERVER_C (DB), SERVER_C (SSAS Default Instance) and SERVER_C (SSAS Named instance) and it all was actually connecting to SERVER_A I tried to do the same with with SERVER_B, and no luck. Changed DNS, removed from AD, and it wouldn't connect. Found out that there were some SPN's in AD set up, so removed those and tried again. I then could connect to SERVER_B (DB), SERVER_B (SSAS Named Instance), but not SERVER_B (SSAS Default Instance). I could connect to SERVER_B (SSAS Default Intance WITH the Port #), but I need to be able to connect without the port number. I am at a loss to as why I can't connect to the default instance without a port #. Not sure if it is SPN's in AD, or another AD issue, or something else. Pretty sure it isnt something on the server (because SERVER_C works!) Any insight or suggestions would be greatly helpful!!

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• DNS Does Not Register at Off-site Locations

  - by Russ Warren

  First of all, let me give you the specifics of our setup: Windows Small Business Server 2008 Domain w/ all applicable updates on the DC The DC does DHCP for the main site The DC does DNS for all sites 3 sites including our headquarters where the DC is located All sites are connected through OpenVPN SSL tunnels terminated by an Untangle box at each site The 2 remote sites us the Untangle box as a DHCP server for their subnet, which assigns the DC as the primary DNS server Collection of Windows XP and Windows 7 workstations connected to the domain Here's the issue: All of the workstations at the main site register with the DNS server on the domain controller fine. As they grab an IP from the DHCP server, it updates the DNS server with the new host record. I have 2 systems (each at different remote sites) that fail to register with the DNS server. I've attempted the following troubleshooting steps: Confirmed the network adapter is using the DC as a DNS server Confirmed 2-way traffic is possible between DC and workstation Verified the "Register with DNS server" setting was checked in the adapter properties Attempted ipconfig /registerdns and received no errors For the time being, I have setup a DHCP reservation for these systems and manually created a host record. This seems to work fine, but I need a solution for any new systems that go out there.

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• Is there a way to force spam-filter to change their policy or remove them as recognized spam service?

  - by Alvin Caseria

  As per mxtoolbox I got 1 blacklist still active for quite sometime now. UCEPROTECTL1's is running on 7 day policy since last spam mail. This is too strict compared to the 98 other spam filters out there as per mxtoolbox. (Or at least to the other 4 that detected the problem) I have no problem with our e-mail since it is hosted locally. But our domain is hosted outside the country and it run on a different IP. I contacted them but since it is the spam-filter's rule, there's nothing to be done but wait. I do believe services like spam-filters should at lease be bounded by guidelines and standards for this matter. Otherwise problem on delivering valid (after the fix) e-mails will be disastrous. Is there a way to force UCEPROTECT to change their policy or remove them as recognized spam service? Apart from contacting them in case they do not answer. Currently they are charging for fast removal if you pay by PayPal. I'm still looking for guideline/standard on how they should operate regarding this matter. Appreciate the help.

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• Kerberos & localhost

  - by Alex Leach

  I've got a Kerberos v5 server set up on a Linux machine, and it's working very well when connecting to other hosts (using samba, ldap or ssh), for which there are principals in my kerberos database. Can I use kerberos to authenticate against localhost though? And if I can, are there reasons why I shouldn't? I haven't made a kerberos principal for localhost. I don't think I should; instead I think the principal should resolve to the machine's full hostname. Is that possible? I'd ideally like a way to configure this on just one server (whether kerberos, DNS, or ssh), but if each machine needs some custom configuration, that'd work too. e.g $ ssh -v localhost ... debug1: Unspecified GSS failure. Minor code may provide more information Server host/[email protected] not found in Kerberos database ... EDIT: So I had a bad /etc/hosts file. If I remember correctly, the original version I got with Ubuntu had two 127.0. IP addresses, something like:- 127.0.0.1 localhost 127.0.*1*.1 hostname For no good reason, I'd changed mine a long time ago to: 127.0.0.1 localhost 127.0.*0*.1 hostname.example.com hostname This seemed to work fine with everything until I tried out ssh with kerberos (a recent endeavour). Somehow this configuration led to sshd resolving the machine's kerberos principal to "host/localhost@\n", which I suppose makes sense if it uses /etc/hosts for forward and reverse dns lookups in preference to external dns. So I commented out the latter line, and sshd magically started authenticating with gssapi-with-mic. Awesome. (Then I investigated localhost and asked the question)

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• duplicity fail: not promping for password: "Running 'sftp user@host' failed"

  - by Thr4wn

  I have two linode VPS accounts and I want to back up one onto the other (the reasons are mainly for fun and to practice server administration.) the short version Duplicity isn't even asking for my password, but immediately says "invalid SSH password" (but I can ssh into the other server). why? the long version When I run duplicity /home/me scp://[email protected]//root/backup I get Invalid SSH password Running 'sftp [email protected]' failed (attempt #1) Invalid SSH password Running 'sftp [email protected]' failed (attempt #2) Invalid SSH password Running 'sftp [email protected]' failed (attempt #3) And it says Invalid SSH password immediately with no opportunity for me to actually type the password. When I type duplicity full -v9 --num-retries 4 /home/me scp://[email protected]//root/backup I get Main action: full Running 'sftp [email protected]' (attempt #1) State = sftp, Before = 'Connecting to 97.107.129.67... [email protected]'s' State = sftp, Before = '' Invalid SSH password Running 'sftp [email protected]' failed (attempt #1) I can ssh into [email protected] fine, and in fact have the ip in known_hosts before I tried any of this. serer 1 (from which I'm running the duplicity command) is Linode's default Ubuntu 8 setup with only a handful of programs installed via apt-get. server 2 (represented by x.x.x.x) is literally only Linode's default Ubuntu 8 setup I previously tried using SystemImager -- would that have changed settings in a destructive way? (I have removed and rebooted since then) Isn't Duplicity supposed to prompt for password? Am I using it wrong? are there common mistakes/dependencies I need to know about? Is there any way that x.x.x.x could be setup that could make this not work (I used Linode's default Ubuntu 8 setup and barely )?

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• rsync over ssh backup failing after relocation of server

  - by OlduvaiHand

  I've got two FreeBSD machines set up; one serves video data and the other is the backup for the first. At this point I've got around 4TB of data. I add files to the video server a few at a time, and was planning to use rsync over ssh to keep the backup machine up to date. I did the initial, large backup with both machines hooked up to the same subnet at the lab with no problems using rsync. Then, when I moved the backup machine off-site (but still on the university network), I attempted a sync without changing anything other than the IP (as the machine is now on a different subnet) and got the following error: 2010/03/22 15:55:21 [1260] rsync: connection unexpectedly closed (6340840244 bytes received so far) [receiver] 2010/03/22 15:55:21 [1260] rsync error: error in rsync protocol data stream (code 12) at io.c(601) [receiver=3.0.7] 2010/03/22 15:55:21 [1258] rsync: connection unexpectedly closed (60 bytes received so far) [generator] 2010/03/22 15:55:21 [1258] rsync error: unexplained error (code 255) at io.c(601) [generator=3.0.7] The script that handles the backup hasn't been changed, nor has the crontab that invokes it. Does anyone have any ideas about what might be causing the hiccup? I was under the impression that it might have something to do with the ssh connection timing out or something along those lines, but am not entirely clear on how to diagnose the cause of the problem.

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• Nexus functionality is limited after installation

  - by Dmitriy Sukharev

  I have a CentOS based server with Sonatype Nexus 2.0.4-1 installed. The issue is that there are no standard "Artifact Search", "Advanced Search", "Browse Index", "Refresh Index" Nexus features, as well as Artifact Information tab after selection of any artifact (only Maven Information tab). I tried to Google, but was amazed that there're no information about this issue. Actually it looks like all actions I've done are: wget http://www.sonatype.org/downloads/nexus-2.0.4-1-bundle.tar.gz tar -xvf nexus-2.0.4-1-bundle.tar.gz cp -r nexus-2.0.4-1 sonatype-work /opt/ ln -s /opt/nexus-2.0.4-1/* /opt/nexus ln /opt/nexus/bin/nexus /etc/init.d/ chmod 755 /etc/init.d/nexus vim /etc/init.d/nexus NEXUS_HOME=“/opt/nexus” RUN_AS_USER=“nexus” useradd -s /sbin/nologin -d /var/lib/nexus nexus chown -R nexus /opt/nexus/ chown -R nexus /opt/nexus-2.0.4-1/ sudo -u nexus cp /opt/nexus/conf/examples/proxy-https/jetty.xml /opt/nexus/conf/ To force Nexus be available through HTTPS I went to Administration - Server - Application Server Settings as admin and changed Base URL to https:// external IP/nexus and set Force Base URL to true. Any ideas how to get missed Nexus features?

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• What's the difference between Host and HostName in SSH Config?

  - by Bill Jobs

  The man page says this: Host Host Restricts the following declarations (up to the next Host keyword) to be only for those hosts that match one of the patterns given after the keyword. If more than one pattern is provided, they should be separated by whitespace. A single `*' as a pattern can be used to provide global defaults for all hosts. The host is the hostname argument given on the command line (i.e. the name is not converted to a canonicalized host name before matching). A pattern entry may be negated by prefixing it with an exclamation mark (`!'). If a negated entry is matched, then the Host entry is ignored, regardless of whether any other patterns on the line match. Negated matches are therefore useful to provide exceptions for wildcard matches. See PATTERNS for more information on patterns. HostName HostName Specifies the real host name to log into. This can be used to specify nicknames or abbreviations for hosts. If the hostname contains the character sequence `%h', then this will be replaced with the host name specified on the command line (this is useful for manipulating unqualified names). The default is the name given on the com- mand line. Numeric IP addresses are also permitted (both on the command line and in HostName specifications). For example, when I want to create an SSH Config for GitHub, what should Host and HostName be respectively?

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• Why can't I unblock postgres with shorewall?

  - by ryeguy

  I can't seem to unblock the port needed for postgres using Shorewall. I am developing a PHP app on my windows machine here, and then I upload it on my linux box to actually use it. The linux box runs the php files as well as hosts the db server. Since I need it working from both machines, in my PHP code I am referring to the database as the full IP instead of localhost. I can easily connect to postgres from my windows machine, but ironically, my PHP app can't connect to postgres even though it's on the same box. Here's what I have in /etc/shorewall/rules: #macro/action src dest PostgreSQL/ACCEPT net $FW PostgreSQL/ACCEPT loc $FW PostgreSQL/ACCEPT loc dmz PostgreSQL/ACCEPT net dmz PostgreSQL/ACCEPT loc net PostgreSQL/ACCEPT dmz $FW PostgreSQL/ACCEPT dmz loc PostgreSQL/ACCEPT dmz net PostgreSQL/ACCEPT dmz dmz Clearly I have a ton of crap there. The first line is all I needed to make it allow a connection from my windows machine. All the lines after it are me just trying everything to get it to work. What am I missing?

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