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• SPF hardfail and DKIM failure when recipient has e-mail forwarding

  - by Beaming Mel-Bin

  I configured hardfail SPF for my domain and DKIM message signing on my SMTP server. Since this is the only SMTP server that should be used for outgoing mail from my domain, I didn't foresee any complications. However, consider the following situation: I sent an e-mail message via my SMTP server to my colleague's university e-mail. The problem is that my colleague forwards his university e-mail to his GMail account. These are the headers of the message after it reaches his GMail mailbox: Received-SPF: fail (google.com: domain of [email protected] does not designate 192.168.128.100 as permitted sender) client-ip=192.168.128.100; Authentication-Results: mx.google.com; spf=hardfail (google.com: domain of [email protected] does not designate 192.168.128.100 as permitted sender) [email protected]; dkim=hardfail (test mode) [email protected] (Headers have been sanitized to protect the domains and IP addresses of the non-Google parties) GMail checks the last SMTP server in the delivery chain against my SPF and DKIM records (rightfully so). Since the last STMP server in the delivery chain was the university's server and not my server, the check results in an SPF hardfail and DKIM failure. Fortunately, GMail did not mark the message as spam but I'm concerned that this might cause a problem in the future. Is my implementation of SPF hardfail perhaps too strict? Any other recommendations or potential issues that I should be aware of? Or maybe there is a more ideal configuration for the university's e-mail forwarding procedure? I know that the forwarding server could possibly change the envelope sender but I see that getting messy.

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• How to configure postfix for per-sender SASL authentication

  - by Marwan

  I have two gmail accounts, and I want to configure my local postfix server as a client which does SASL authentication with smtp.gmail.com:587 with credentials that depend on the sender address. So, let's say that my gmail accounts are: [email protected] and [email protected]. If I sent a mail with [email protected] in the FROM header field, then postfix should use the credentials: [email protected]:psswd1 to do SASL authentication with gmail SMTP server. Similarly with [email protected], it should use [email protected]:passwd2. Sounds fairly simple. Well, I followed the postfix official documentation at http://www.postfix.org/SASL_README.html, and I ended up with the following relevant configurations: /etc/postfix/main.cf smtp_sasl_auth_enable = yes smtp_sasl_security_options = noanonymous smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sender_dependent_authentication = yes sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay smtp_tls_security_level = secure smtp_tls_CAfile = /etc/ssl/certs/Equifax_Secure_CA.pem smtp_tls_CApath = /etc/ssl/certs smtp_tls_session_cache_database = btree:/etc/postfix/smtp_scache smtp_tls_session_cache_timeout = 3600s smtp_tls_loglevel = 1 tls_random_source = dev:/dev/urandom relayhost = smtp.gmail.com:587 /etc/postfix/sasl_passwd [email protected] [email protected]:passwd1 [email protected] [email protected]:passwd2 smtp.gmail.com:587 [email protected]:passwd1 /etc/postfix/sender_relay [email protected] smtp.gmail.com:587 [email protected] smtp.gmail.com:587 After I'm done with the configurations I did: $ postmap /etc/postfix/sasl_passwd $ postmap /etc/postfix/sender_relay $ /etc/init.d/postfix restart The problem is that when I send a mail from [email protected], the message ends up in the destination with sender address [email protected] and NOT [email protected], which means that postfix always ignores the per-sender configurations and send the mail using the default credentials (the third line in /etc/postfix/sasl_passwd above). I checked the configurations multiple times and even compared them to those in various blog posts addressing the same issue but found them to be more or less the same as mine. So, can anyone point me in the right direction, in case I'm missing something? Many thanks.

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• Unconvert Text File from Binary Format

  - by Hammer Bro.

  I've got a rather large CSV file (~700MB) which I know to consist of lines of 27-character alpha-numeric hashes; no commas or anything fancy. Somehow, during its migration from Windows to Linux (via winSCP and then a few regular SCPs), it has converted into some kind of binary format I am unfamiliar with. If I open the file in vi, everything appears fine, and it says [converted] at the bottom, although I know it's not a line endings issue (and dos2unix doesn't help). If I 'head' the file, it looks proper except for a "ÿþ" at the beginning of the first line. If I open up the file in nano, however, I see the "ÿþ" at the start and then "^@" before every character (even newlines and EoF). If I try to re-save or copy the file (say via: head file.csv short.txt), this special encoding is preserved. I copied the first ten lines out of vi (which displays it properly) into my Windows clipboard via my SSH client, then pasted it into a new text file, test.txt. This file is visually identical when opened in vi (and similar through 'head', minus the "ÿþ"), although it's roughly half of the filesize. Additionally, file test.txt test.txt: ASCII text file short.txt short.txt: I have no idea what format this once-text file got converted to (it's notoriously hard to search the internet for symbols), but surely there must be some way to convert it back. Any ideas?

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• mysql master-master setup as a way to simply master-slave promotion

  - by Chris Go

  I'm trying to see if the following plan is viable. Goal here is to be able to do HA (uptime) and not necessarily for load -- writes are fine on one MySQL 5.5 server (with innodb) but not really possible when the database is down. Currently, I have a master-slave replication setup which works fine except it doesn't have automatic promotion (obviously). what I am planning on doing is setup master-master replication to possibly do this "automatic promotion" using Amazon Route 53 DNS Failover (Health checks). What I am trying to avoid is to NOT have to do the auto-increment trick because the "business folks" got used to the auto-incrementing PK as consecutive numbers (yeah, I know this is bad but data is from 2004). So, setup the master-master replication WITHOUT the auto-increment collision prevention bit. The primary master is db1.domain.com and secondary master is db2.domain.com In Amazon Route 53, setup DNS Failover record for db.domain.com - primary failover is db1.domain.com - with a TCP healthcheck on IP address port 3306 - secondary failover is db2.domain.com - with a TCP healthcheck on IP address port 3306 Most of the time (99%), unless tcp://db1.domain.com:3306 is dead, db1.domain.com will be served up on DNS hits to db.domain.com. In fact, hopefully this is 100%. The possible downsides of this is the loss of a primary key (collision) and I think I am OK with losing one order. We are a low data volume B2B business and can just call our client up if this occurs (like an order disappearing). Does this sound like a good plan? Then I will also run another slave replication on db1.domain.com as "master" to a slave-db1.domain.com -- not sure why, maybe for heavy SELECTs?

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• Apache ProxyPass with SSL

  - by BBonifield

  I have a QA setup that consists of multiple internal development servers and one world-accessible provisioning machine that is setup to proxy pass the web traffic. Everything works fine for non-SSL requests, but I'm having a hard time getting the SSL logic working as well. Here's a few example vhost blocks. <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev2.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev2.site.com </VirtualHost> I end up seeing the following error in the provisioner's error log. [Fri Jan 28 12:50:59 2011] [warn] [client 1.2.3.4] proxy: no HTTP 0.9 request (with no host line) on incoming request and preserve host set forcing hostname to be dev1.site.com for uri / As well as the following entry in the destination QA machine's access log. 192.168.168.101 - - [22/Feb/2011:08:34:56 -0600] "\x16\x03\x01 / HTTP/1.1" 301 326 "-" "-"

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• Memcached session manager in Azure: Connection gets forcibly closed

  - by Edgar Pérez

  I am using Memcached Session Manager to handle Tomcat sessions in non-sticky mode. My deployment in Azure consists of a Worker Role with two instances which connect to an Azure VM running my Memcached server. Everything works pretty well, my session is persisted and retrieved by any of the two instances transparently. The problem arises when the session is idle for about 4 minutes; everything points out that the Azure Loadbalancer is closing the spymemcached connection to the VM after some period of inactivity. My MSM configuration is this: <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager" memcachedNodes="n1:my-azure-vm.cloudapp.net:11211" sticky="false" sessionBackupAsync="false" sessionBackupTimeout="10000" lockingMode="uriPattern:/path1|/path2" requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js|ttf|eot|svg|woff)$" transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" customConverter="de.javakaffee.web.msm.serializer.kryo.HibernateCollectionsSerializerFactory"/> The stacktrace printed by the spymemcached client is this: INFO net.spy.memcached.MemcachedConnection: Reconnecting due to exception on {QA sa=/10.194.132.206:13000, #Rops=1, #Wops=0, #iq=0, topRop=net.spy.memcached.protocol.binary.StoreOperationImpl@1d95da8, topWop=null, toWrite=0, interested=1} java.io.IOException: An existing connection was forcibly closed by the remote host at sun.nio.ch.SocketDispatcher.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(Unknown Source) at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source) at sun.nio.ch.IOUtil.read(Unknown Source) at sun.nio.ch.SocketChannelImpl.read(Unknown Source) at net.spy.memcached.MemcachedConnection.handleReads (MemcachedConnection.java:303) at net.spy.memcached.MemcachedConnection.handleIO (MemcachedConnection.java:264) at net.spy.memcached.MemcachedConnection.handleIO (MemcachedConnection.java:184) at net.spy.memcached.MemcachedClient.run(MemcachedClient.java:1298) Given this idle time limitation in Azure, is there any other way to make MSM work in the azure cloud?

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• Sync OneNote Notebooks to/on SkyDrive

  - by Sam

  I've got OneNote running on all computers in our house, using it all the time with several people and computers. The only drawback: I want to keep the copies of OneNote in sync without having to run a dedicated server myself. Right now one of my computers has a folder share, where all others sync to, but this is highly impractical since the computer is not always running. So my question is: is it possible to put the notebook files on a (private) SkyDrive Folder and have all the computers sync to there? This way all computers could keep in sync whenever they got access to the web. Can this be done? and, of course, How? [Update] Maybe I should not have taken knowledge about OneNote as granted: OneNote uses a propietary file format, but has a very good in-file-syncing, working on network shares. Generic 'just sync the complete file' won't be useful at all, because I'd just have 'file has changed on server and on client' conflicts all the time. The sync needs to know OneNote files and be able to sync the content - eg. OneNote itself needs to sync the files, not some generic sync tool.

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• Finding cause of TCP retransmission within a LAN

  - by Surreal

  Hello denizens of Server Fault I have an irritating problem with a LAN of about 100 computers, 2 Windows domain servers, and 12 VoIP phones. Since their installation around a year ago, every week or so, we notice a VoIP phone resetting itself - occasionally in the middle of a call. Simultaneously there are often signs of temporary loss of connection on computers: freezes in explorer while accessing network shares, errors in our administration software due to loss of connection to the database server. I have been doing some Wireshark monitoring on the connection between the VoIP PBX and the rest of the network. Wireshark picks up a clump of retransmitted TCP packets at the times when we record phone restarts. The Wireshark log shows about 2 clusters of retransmissions a day ranging from 5 packets to hundreds. Those in each cluster are mainly between the PBX and some set of the VoIP phones, but not always the same set. Often retransmissions at the same time are to phones connected to the same switch, but sometimes retransmissions occur together to phones at opposite ends of the network. There are usually some coincident retransmissions in passing TCP traffic, for example between client machines and the file servers. The spikes in retransmissions and phone resets do not correlate well with when the network is heavily loaded. They seem to occur slightly more during the day, but most in the evening, when traffic should be decreasing. They occur reasonably often late at night when most computers are turned off and traffic should be lowest. Do you have any ideas that might help diagnose the cause of problems like this? One thing I have not yet tried, but should have, is updating the firmware of all the switches.

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• ClearOS - how to create a site to site VPN between two ClearOS boxes?

  - by Scott Szretter

  I plan on setting up some ClearOS boxes at several sites, and would like to set up site-to-site VPN between the remote sites and a main site (all running ClearOS enterprise 5.2sp1 / latest version). I have found references for how to set up ClearOS to VPN in to devices such as cisco for IPSEC, and others with PPTP. But for these methods it did not mention how you might configure 2 ClearOS boxes to talk to each other ipsec or pptp. I also saw documentation on installing OpenVPN and using the OpenVPN client software to VPN in to the ClearOS box. I will probably use this for individual users to VPN in, but I have some small sites ( 1 to 10 users) that will have their own ClearOS box and need to create a site to site VPN link back to the main site's OpenVPN box. Is this possible, can you point me to docs, or other info or basically, how? A couple updates: I did find a thread that asks the same basic question, where the user has a vpn set up between the two clearos machines (after installing ipsec vpn modules), just not transporting traffic between the LANS - and the very last post claims you have to edit some files (/etc/ipsec.conf) and set leftnexthop rightnexthop values to %direct. After that, it's supposed to work. Could it be that simple? I also posted to clear foundation, and they pointed me to some documentation for setting up ipsec unmanaged vpn. This looks pretty good, but, I will most likely need to figure out how to handle a dynamic dns type setup at least on one end. Also, what does it mean by multi-wan? Finally, what happens when a vpn connection goes down exactly - someone has to reboot the box or ?

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• postfix Mail filters not running behind a controlled enviornment

  - by Ashish

  Hi, I have deployed a postfix server for email receiving. On this I have configured SenderID + SPF milter, by referring to http://www.postfix.org/MILTER_README.html The command that I used is as follows: ./sid-filter -u postfix -p inet:10027@localhost -l Following are my settings in main.cf file: #Milter support for smtpd mail smtpd_milters = inet:localhost:10027, inet:localhost:10028 # Milters for non-SMTP mail. non_smtpd_milters = inet:localhost:10027, inet:localhost:10028 milter_default_action = reject # Postfix . 2.6 #milter_protocol = 6 # 2.3 . Postfix . 2.5 milter_protocol = 2 Now I have this observation: One of the postfix that is setup on AWS CentOS 5.5 is working fine and is able to receive mails on defined mx record. One of the similar postfix(as in step 1) that is setup behind one of the corporate firewalls is not able to receive any mails and is giving following type of error logs: connect from xxxxxx.austin.hp.com[xx.xxx.96.198] May 25 13:20:02 g2t0385g postfix/smtpd[11733]: C11F9B0194: client=xxxxxxx.austin.hp.com[15.217.96.198] May 25 13:20:03 g2t0385g postfix/cleanup[11814]: C11F9B0194: message-id= May 25 13:20:03 g2t0385g postfix/cleanup[11814]: C11F9B0194: milter-reject: END-OF-MESSAGE from xxxxxx.austin.hp.com[xx.xxx.96.198]: 5.7.1 Command rejected; from= to= proto=ESMTP helo= Here the 'sid-filter' is giving problems. Any idea, what I am doing wrong? Please help. Thanks in advance Ashish Sharma

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• os x 10.4 Old, deleted user mail account problems

  - by Chris

  Hello- A while back I tried to add a user 'david' as a mail user on my OS X 10.4 server using dscl (I only had terminal access at the time, no ability to use workgroup manager). I could never get this account to work properly, so I deleted it. dscl . -list /Users no longer shows 'david' as an entry. I have since gained access via Workgroup Manager, and I am trying to re-create the 'david' account. Workgroup manager creates the account fine, along with an email account, which I can then log into via IMAP ('login david password' returns 'OK user logged in'). However, this mail account does not have an inbox, and I can not create one thru a mail client, IMAP or cyradm (they all say 'system I/O error'). When I re-delete this user, I can't find any record of him in any of the mail spool locations. Creating a user with any other name works fine (Inbox, mail access, everything). Any ideas on how I can get this user up and running again? -Chris P.S. - to create this user in the first place, I used dscl . create, then dscl . append /Users/david "some XML I found on the 'net" to add email privileges, if this helps...

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• ip-up does not trigger when using built-in cisco vpn on mac osx lion

  - by Yasser Sobhdel

  I am using Cisco VPN client over lion and I want to make the ip-up and ip-down work. There is no sign of any action taken when I connect or disconnect this VPN connection. I really doubt whether the syntax has been changed or even this kind if connection is triggering the ip-up. Logically, it must be set over ppp but when using the following codes and instructions on them, there is no sign of any output in the log file: http://www.macfreek.nl/mindmaster/Modify_PPTP_Routing_Table http://www.aidanfindlater.com/use-vpn-for-specific-sites-on-mac-os-x Going for error, which there is no sign of it, using the following page: http://hints.macworld.com/article.php?story=20060616150640529 I couldn't find the /var/log/ppp/vpnd.log log file. Also the files are given full permission 0755 or a+x or even 777 using the following command: sudo chmod a+x /etc/ppp/ip-up Any clue on how to debug this would be appreciated. I am totally confused, netstat -rn -f inet doesn't show the routes. Even when the routes are added manually, closing the VPN connection does not run the ip-down and the routes must be deleted manually.

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• Apache error with suEXEC only

  - by michaelc

  When I enable suEXEC by following the tutorial here, I am able to get PHP to run over Apache in cgi mode, but when I start trying to use suEXEC I get a 403, and the following error appears in the error log "client denied by server configuration". The suEXEC log is empty. How can I get this working? My ultimate goal is to run fastcgi with suexec, and this error has stopped me at every turn. The relevant portion of httpd.conf: ScriptAlias /php5-cgi /usr/bin/php-cgi Action php5-cgi /php5-cgi AddHandler php5-cgi .php <Directory /usr/bin> Order allow,deny Allow from all </Directory> <VirtualHost *:80> ServerName skylords.com ServerAlias www.skylords.com en.skylords.com lt.skylords.com nl.skylords.com DocumentRoot /srv/http/htdocs SuexecUserGroup skylords skylords AddHandler php5-cgi .php ScriptAlias /php5-cgi /var/http/htdocs/cgi-bin/php-cgi ErrorDocument 404 /srv/http/htdocs ErrorLog /srv/http/logs/apache_error.log <Directory "/srv/http/htdocs"> AllowOverride All Order allow,deny Allow from all Options Indexes +FollowSymLinks +ExecCGI </Directory> </VirtualHost>

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• Redmine subversion won't ignore certificate error even if told

  - by Pekka

  I have set up a copy of Redmine through the Bitnami Redmine Stack and am having trouble accessing a remote SVN repository through https. The trouble seems to be related to the fact that I don't have a signed certificate, and the certificate provided doesn't match the host name (I am accessing the same server through a number of host names). I am new to Ruby, Mongrel, Rails and Redmine. Following the advice in this forum thread, I changed the path Redmine uses to invoke the svn client in \apps\redmine\lib\ redmine\scm\adapters\subversion_adapter.rb from SVN_BIN = "svn" to SVN_BIN = "svn --trust-server-cert --non-interactive --config-dir c:/user/temp" I was hoping that the --trust-server-cert option would fix the certificate problem. However, I am still getting the following error message in mongrel.log: svn: OPTIONS of 'https://server.xyz:8443/svn/reponame': Server certificate verification failed: certificate issued for a different hostname, issuer is not trusted (https://server.xyz:8443) Does anybody know what to do about this? Additional info: I re-started the mongrel service after each change I am sure the configuration change has taken effect because subversion has created a full configuration directory in c:\user\temp I can access the remote repository using command line svn no problem The remote repository runs on a Windows box with VisualSVN

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• OpenVPN and TomatoVPN

  - by Bill Johnson

  Wondering if someone can help me with the following. I have updated my Linksys router with TomatoVPN and used the following config: Interface Type:TAP Protocol:UDP Port:1195 Firewall Custom Authorization Mode:Static Key I have then inserted the static key generated in OpenVPN saved and started the service. connect.ovpn. # Use the following to have your client computer send all traffic through your router # (remote gateway) remote (entered my DNS/DHCP servers external IP address here) port 1195 dev tap secret static.key.txt proto udp comp-lzo route-gateway 192.168.1.1 redirect-gateway float I've then placed my static key in a file in the same directory as your connect.ovpn (static.key.txt) Now OpenVPN is installed on a laptop that I use at home. I have plugged in the laptop to my home connection and started connect.ovpn The Local Area Connection is connected as 'Home Network 3' - and when I start OpenVPN it is connected as 'Local Area Connection 2' and this is showing as 'Unidentified Network' and it appears there is no network access. TAP-Win32 Adapter V9 appears to be the adaptors name and the IP and DNS properties are set to automatic. If I open up the OpenVPN GUI it shows an error message saying "Connecting to connect has failed". Looking at the error message behind this pop-up one line says "TCP/UDP Socket bind failed on local address [undef]:1195 Address already in use [WSAEADDRINUSE] Could anyone possibly help me further with this please?

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• Easiest way to allow direct HTTPS connection in Intercept mode?

  - by Nick Lin

  I know the SSL issue has been beaten to death I'm using DNS redirect to force my clients to use my intercept proxy. As we all know, intercepting HTTPS connection is not possible unless I provide a fake certificate. What I want to achieve here is to allow all HTTPS requests connect directly to the source server, thus bypassing Squid: HTTP connection Proxy by Squid HTTPS connection Bypass Squid and connect directly I spent the past few days goolging and trying different methods but none worked so far. I read about SSL tunneling using the CONNECT method but couldn't find any more information on it. I tried a similar method in using RINETD to forward all traffic going through port 443 of my Squid back to the original IP of www.pandora.com. Unfortunately, I did not realize all other HTTPS requests are also forwarded to the IP of www.pandora.com. For example, https://www.gmail.com also takes me to https://www.pandora.com Since I'm running the Intercept mode, the forwarding needs to be dynamic and match each HTTPS domain name with proper original IP. Can this be done in Squid or iptables? Lastly, I'm directing traffic to my Squid server using DNS zone redirect. For example, a client requests www.google.com, my DNS server directs that request to my Squid IP, then my transparent Squid will proxy that request. Will this set up affect what I'm trying to achieve? I tried many methods but couldn't get it to work. Any takes on how to do this?

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• How to find out where or if MYSQL5 logs are stored on a machine WHM/Cpanel

  - by moi

  I have a WHM/Cpanel re-seller hosting account on a virtual private server (Linux). I have root access to the machine via SSH I am trying to locate a file that contains information that will help me to determine which users have accessed what db and from which hosts. I would imagine this kind of data is stored in a log file somewhere. The MySQL page says: The general query log - Established client connections and statements received from clients See: http://dev.mysql.com/doc/refman/5.0/en/server-logs.html It also says: By default, all log files are created in the mysqld data directory. So, I am am NOT asking where are the general query log logs stored, (cos I expect I will get answers saying "it depends") Please help me work out: "How can go about finding out where MySQL general query log logs are stored on a linux machine" Couple of things i've already tried: I looked at /etc/my.cnf it was a tiny file that only contained the following info: [mysqld] skip-bdb skip-innodb set-variable = max_connections=500 safe-show-database ~ ~ I have looked in: /var/lib/mysql/ But I could not see any log-like file names in that directory. Any clues on this would be most welcome.

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• IPCop Packet Mangling

  - by Zenham

  I've found myself in a pickle replacing an old firewall for a client this afternoon. I'm configuring their new IPCop firewall (1.4.21), Zerina OpenVPN addon is installed. What I need to do: There are three network interfaces, currently set up as red (WAN), green (LAN, 192.168.20.0/24) and orange (remote network 10.1.20.0/24). The orange interface is a direct fiber link to another organization. Simple description: Traffic and networks appear to be properly configured at this point, but I have many (150+) specific IPs on the LAN which, when accessing the resources on the 10.1.20.x network, need to be mangled to appear to be coming from the 10.1.20.0/24 network (and return traffic properly delivered). The routing on the far side was configured earlier and should be fine, but I need to redirect any packets coming across destined for those IPs to end up at their proper destination. The addressing is fixed and predictable (ie. 192.168.20.125 - 10.1.20.125). I need to insert whatever rules I have into the IPCop ruleset through /etc/rc.local I know, I'm just not sure about how I should structure this. There's CUSTOMOUTPUT and CUSTOMINPUT targets, both which currently just consist of the single rule redirecting packets to the OVPNOUTPUT/OVPNINPUT targets, so I'm guessing I should insert a rule matching outbound packets destined for the 10.1.20.x network and redirecting to a new target (maybe called TO-ORANGE) and a rule at the top of CUSTOMINPUT which redirects to a FROM-ORANGE target. Under those targets, I would have rules which do the IP matching and mangling. Am I approaching this right? If so, I'm not very familiar with mangle, and would appreciate seeing examples of how to write that source-IP rewrite. If not, how would you suggest doing this? TIA! edit: I notice additionally that the nat table has CUSTOMPREROUTING and CUSTOMPOSTROUTING targets, I guess I could alternatively post the rules in there....

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• Remote SQL server connection failure

  - by Sevki

  I am trying to connect to my MSSQL server 2008 web instance and im failing horribly... i get the error 26 and before you jump on me i have done these Check the spelling of the SQL Server instance name that is specified in the connection string. Use the SQL Server Surface Area Configuration tool to enable SQL Server to accept remote connections over the TCP or named pipes protocols. For more information about the SQL Server Surface Area Configuration Tool, see Surface Area Configuration for Services and Connections. Make sure that you have configured the firewall on the server instance of SQL Server to open ports for SQL Server and the SQL Server Browser port (UDP 1434). Make sure that the SQL Server Browser service is started on the server. in addition to theese i have disabled the firewall completely and tried other ports nothing works the same credentials work on the server but not on the client. this is the exact error message A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (.Net SqlClient Data Provider) Can anybody help?

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• chmod -R 777 / on ubuntu - numerous problems

  - by ncatnow

  A client has accidentally given the entire filesystem full permissions on their ubuntu 10.04 box. chmod -R 777 httpdocs/cd / As you can see they attempted to cd to the root, and instead gave chmod a fun parameter to play with. First sign of the problem was inability to use 'su', giving an authentication error. sudo also complained of a missing setuid bit. This was fixed by logging in as root from the machine itself, and running chmod +s /usr/bin/sudo. I can now sudo su and do what I need to as root. su still gives an authentication failure. I followed the advice here: http://swiss.ubuntuforums.org/showthread.php?t=1180661&page=2 chmod 0755 / chmod 0755 /* chmod 1777 /tmp chmod 0750 /root chmod 0700 /lost+found I then tried to reset root password. I still cannot su to become root, or su root. The system seems to be running fine. Are there any suggestions for getting su to work once again? Where can I look for more problems?

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• SQL Server Management Studio not scripting all objects

  - by Ian Boyd

  i've been attempting to script a database using SQL Server 2005 Management Studio. i cannot get it to script some objects. It scripts others, but skips some. i can provide detailed screen shots the options being selected including all tables the folder where the script files will go the folder being empty before scripting the scripting process saying Sucess when scripting a table the destination folder no longer empty, with a hundred or so script files the script of some tables not being in the folder. And earlier SSMS would not script some views. Is this a known thing that the the Generate Scripts task does not generate scripts? Update Known issue on Microsoft Connect, but Microsoft couldn't repro the steps, so they closed closed the ticket. Fails on SQL Server 2005, also fails on SQL Server 2008. Update Two Some basic questions: 1.What version of SQL Server? Microsoft SQL Server 2000 - 8.00.194 (Intel X86) Microsoft SQL Server 2005 - 9.00.3042.00 (Intel X86) Microsoft SQL Server 2008 - 10.0.2531.0 (Intel X86) Microsoft SQL Server 2005 Management Studio: 9.00.4035.00 Microsoft SQL Server 2008 Management Studio: 10.0.1600.22 2.What O/S are you running on? Windows Server 2000 Windows Server 2003 Windows Server 2008 3.How are you logging in to SQL server? sa/password Trusted authentication 4.Have you verified your account has full access to all objects? Yes, i have access to all objects. 5.Can you use the objects that fail to script? (eg: select top(10) * from nonScriptingTable) Yes, all objects work fine. SQL Server Enterprise Manager can script the objects fine. Update Three They fail no matter what version of SQL Server you script against. It wasn't a problem in Enterprise Manager: Client Tools SQL Server 2000 SQL Server 2005 SQL Server 2008 ============ =============== =============== =============== 2000 Yes n/a n/a 2005 No No No 2008 No No No Update Four No errors found in the database using: DBCC CHECKDB go DBCC CHECKCONSTRAINTS go DBCC CHECKFILEGROUP go DBCC CHECKIDENT go DBCC CHECKCATALOG go EXECUTE sp_msforeachtable 'DBCC CHECKTABLE (''?'')' Honk if you hate SSMS.

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• How to remotely open gedit with SFTP URL in Gnome through SSH?

  - by Álvaro Justen

  My setup is weird and I can't change it now. I have two machines: local-machine: it's my desktop running Ubuntu with Gnome remote-machine: it's one virtual machine, also running Ubuntu but without X In both machines I have my private and public SSH keys. I need to run SSH from remote-machine to local-machine and run gedit (in local-machine, under the default $DISPLAY) but openning a file in remote-machine throught SFTP. Something like this: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 gedit sftp://remote-machine/some/file" The command above doesn't work. gedit shows this message: Could not open the file sftp://remote-machine/some/file. gedit cannot handle sftp: locations. Note that: /some/file exists on remote-machine. I can SSH normally from remote-machine to local-machine using my SSH key without any problems! I can run the command DISPLAY=:0.0 gedit sftp://remote-machine/some/file in a terminal on local-machine and gedit opens the file on remote-machine without any problems - but the terminal in which I executed the command is running in DISPLAY :0 (really, it's gnome-terminal). I also tried -t option of SSH client (to force pseudo-tty allocation) but it didn't work. If I try to run DISPLAY=:0.0 gedit sftp://remote-machine/some/file in local-machine but under a tty (for example in tty1, by pressing <Ctrl>+<Alt>+<F1>) it doesn't not work - I get the same error when running from remote-machine. I found that if I pass the environment variable DBUS_SESSION_BUS_ADDRESS with a correct value, it works! So, if I do something like that: myuser@local-machine:~$ env | grep DBUS_SESSION_BUS_ADDRESS > env.txt myuser@local-machine:~$ scp env.txt remote-machine: and then: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 $(cat env.txt) gedit sftp://remote-machine/some/file" it works! The problem is that I'm not on local-machine so I can't get the correct value for this env variable. Is there any other way to make this work?

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• How do I host multiple independent, secured SharePoint sites (WSS 3.0) without using Active Director

  - by Kyle Noland

  I have a SharePoint site set up on one of my networks to service Active Directory users. To be clear, this is a Windows SharePoint Services 3.0 installation running on Windows Server 2003 Standard. It is not an option to upgrade the server or SharePoint version. Management would like to create several new sites, one for each of a handful of clients. These sites will be used like "dropboxes" or FTP sites so that my company can make large files available to outside contacts, and vice versa. Here are my requirements: I do not want to have to create Active Directory accounts for each external contact. If possible, I would like to store the external usernames and passwords in a database that I can write a small GUI for so that management can handle adding their own external contacts. Each client site must be sandboxed from each other and from my main company SharePoint site. I would like to keep everything running on port 80 and be able to access the sites as either clientname.mycompany.com or www.mycompany.com/clientname If anybody has ever done this I would really appreciate hearing about any lessons you learned and suggestions for how to set this up. Kyle

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• WebSeal and jsp content updated by Ajax

  - by lior chaga

  Hey, I have a problem running an application on environment with WebSeal. It is a web application with Java server that contains many parts that are replcaed within the page according to user input. For instance - a form called Outer.jsp may contain a form:options combo-box (by spring-forms), that uppon selection of an option, a certain Div is updated with a content produced by a jsp and fetched by an Ajax call (the ajax impementation in the client is done by Prototype JavaScript framework 1.5.1.2). Let's call the content fetched by ajax - Inner.jsp So Outer.jsp is fetching Inner.jsp, which in turn uses js functions in files included by the Outer.jsp. This, I think, is where my problem starts - Inner.jsp is not familiar with any of the functions included in Outer.jsp. And so, almost any operation performed by Inner.jsp is failing miserably. Needless to say - this works perfect when running on environment without WebSeal. Note that the scripting is enabled in WebSeal junction (with the -J option). I also see that the content returned by the Ajax call includes a document.cookie added by WebSeal (not sure it matters to this problem) Can anyone assist? Thanks! Lior

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• Getting 400 Bad Request when requesting by server name on nginx/uwsgi

  - by Marc Hughes

  I'm trying to run 2 different sites on nginx via different ports (they each have a load balancer that points to the appropriate port). The first site work perfectly. The second site... If I access http://localhost:81/ it works correctly If I access http://127.0.01:81/ it works correctly If I access the hostname http://THEHOSTNAME:81/ it fails with a 400 error If I access the public IP http://x.x.x.x:81/ it fails with a 400 error I've set the error_log to info, but the only lines I get in the log when this happens is: ==> /var/log/nginx/access.log <== 10.183.38.141 - - [24/Aug/2014:21:03:28 +0000] "GET / HTTP/1.1" 400 37 "-" "curl/7.36.0" "-" ==> /var/log/nginx/error.log <== 2014/08/24 21:03:28 [info] 7029#0: *5 client 10.183.38.141 closed keepalive connection In my uwsgi log, I only see this: [pid: 6870|app: 0|req: 87/92] 10.28.23.224 () {32 vars in 380 bytes} [Sun Aug 24 21:05:21 2014] GET / => generated 26 bytes in 1 msecs (HTTP/1.1 400) 2 headers in 82 bytes (1 switches on core 2) What should be my next step in debugging this?

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