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• Can any postfix guru assist me determine how emails are still being sent via my server from unauthorized sources?

  - by Dave

  Hi all, I'm getting a little concerned as I run a small server hosting a number of websites and manage the email for a few dozen people. Just recently though I've had a couple of notifications from spamcop alerting me that spam has been sent from my server, and when I have a look over the logs from time to time I can indeed see that there are many repeated attempts of mail being sent from my server. Most of the time it gets knocked back from the destination servers but sometimes its getting through. Unfortunately I'm not linux or postfix expert, I can get by but had though I had my machine locked down quite securely, I don't allow relaying, when I check the online DNS/MX tools they tend to report my server as being OK so I'm not sure where to take it now and hoping someone might be able to throw me a few pointers. I get lots of entries like this in my MAIL.INFO log Jan 2 08:39:34 Debian-50-lenny-64-LAMP postfix/qmgr[15993]: 66B88257C12F: from=<>, size=3116, nrcpt=1 (queue active) Jan 2 08:39:34 Debian-50-lenny-64-LAMP postfix/qmgr[15993]: 614C2257C1BC: from=<[email protected]>, size=2490, nrcpt=3 (queue active) and Jan 7 16:09:37 Debian-50-lenny-64-LAMP postfix/error[6471]: 0A316257C204: to=<[email protected]>, relay=none, delay=384387, delays=384384/3/0/0.01, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx.fakemx.net[46.4.35.23] refused to talk to me: 421 mx.fakemx.net Service Unavailable) Jan 7 16:09:37 Debian-50-lenny-64-LAMP postfix/error[6470]: 5848C257C20D: to=<[email protected]>, relay=none, delay=384373, delays=384370/3/0/0.01, dsn=4.0.0, status=deferred (delivery temporarily suspended: host mx.fakemx.net[46.4.35.23] refused to talk to me: 421 mx.fakemx.net Service Unavailable) then there tends to be connection timeouts, so from what I see even though I had relaying disabled.. something is getting by and trying to send.. So if you can help that will be greatly appreciated, and any further logging/config info I can supply. Thanks

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• Joomla SMTP Configuration Issue

  - by msargenttrue

  I'm having an issue with the SMTP setup of my Joomla website when trying to send mass emails through the CB Mailing (Mass Email) extension. I receive this error: SMTP Error! The following recipients failed: Number of users to whom e-mail was sent: 0 (Total in list: 1) The old version of this websites mass emailer worked fine, however, in order to add Kunena Forum and maintain compatibility I had to make several upgrades to the site. Both the new version and old verson configurations are outlined below. Server for Website: Mac OS X Server 10.4.11, Apache 1.3.4.1, PHP 5.2.3, MySQL 4.1.22 Server for SMTP: Eudora Internet Mail Server 3.3.9 (EIMS Server X) New Configuration: Joomla 1.5.25, Community Builder 1.7.1, CB Paid Subscriptions (CB Subs) 1.2.2, CBMailing 2.3.4, Kunena Forum 1.7.0, Legacy 1.0 plug-in disabled Mail Settings (New Config): Mailer: SMTP Server Mail from: [email protected] From Name: CASPA Sendmail Path: /usr/sbin/sendmail SMTP Authentication: Yes SMTP Security: None SMTP Port: 25 SMTP Username: [email protected] SMTP Password: xxxxxxx SMTP Host: 209.48.40.194 Old Configuration (Working SMTP Configuration): Joomla 1.5.9, Community Builder 1.2, CB Paid Subscriptions (CB Subs) 1.0.3, CB Mailing 2.1, Legacy 1.0 plug-in enabled Mail Settings (Old Config): Mailer: SMTP Server Mail from: [email protected] From Name: CASPA Sendmail Path: /usr/sbin/sendmail SMTP Authentication: Yes SMTP Username: [email protected] SMTP Password: xxxxxxx SMTP Host: 209.48.40.194 (Notice how the older version of Joomla is missing the 2 fields: SMTP Security and SMTP Port) Thanks in advance!

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• Can I use CNAME with ip address? Why If works (sometimes)?

  - by Maciek Sawicki

  I believe that the easiest answer for the first question is "No, You have "A" for this", but I accidentally setup some subdomain using CNAME pointing to ip address and it worked on few computers in my office. I wonder how it was possible? Now, when I'm checking it from home I have following error: beast:~ viroos$ host somesubdomain.somedomain.com Host somesubdomain.somedomain.com not found: 3(NXDOMAIN) I'm 100% it used to work at my office (currently it looks like it doesn't, but I'm checking it on different machine). Therefore I'm not 100% if it worked due to some special network setup or because I tested it just after adding DNS entry. I know this story sounds, a little crazy/incredibly, but can someone help me solve this puzzle. //edit: I'm adding dig output ; <<>> DiG 9.6-ESV-R4-P3 <<>> somesubdomain.somedomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60224 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;somesubdomain.somedomain.com. IN A ;; ANSWER SECTION: somesubdomain.somedomain.com. 67 IN CNAME xxx.xxx.xxx.xx1. ;; AUTHORITY SECTION: . 1800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2012040901 1800 900 604800 86400 ;; Query time: 72 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Tue Apr 10 00:11:01 2012 ;; MSG SIZE rcvd: 136

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• Nginx: Serve static files out of a given directory - one level too deep

  - by Joe J

  I'm pretty new to nginx configs. I'm having some difficulty with a pretty basic problem. I'd like to host some static files at /doc (index.html, some images, etc). The files are located in a directory called /sites/mysite/proj/doc/. The problem is, is that with the nginx config below, nginx tries to look for a directory called "/sites/mysite/proj/doc/doc". Perhaps this can be fixed by setting the root to /sites/mysite/proj/, but I don't want to potentially expose other (non-static) assets in the proj/ directory. And for various reasons, I can't really move the doc/ directory from where it is. I think there is a way to use a Rewrite rule to solve this situation, but I don't really understand all the parts, so having some difficulty formulating the rule. rewrite ^/doc/(.*)$ /$1 permanent; I've also included a working example of hosting files out of a /sites/mysite/htdocs/static/ directory. > vim locations.conf location /static { root /sites/mysite/htdocs/; access_log off; autoindex on; } location /doc { root /sites/mysite/proj/doc/; access_log on; autoindex on; } 2011/11/19 23:49:00 [error] 2314#0: *42 open() "/sites/mysite/proj/doc/doc" failed (2: No such file or directory), client: 100.100.100.100, server: , request: "GET /doc HTTP/1.1", host: "myhost.com" Does anyone have any ideas how I might go about serving this static content? Any help is much appreciated. Thanks, Joe

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• HAProxy is caching the forwarding?

  - by shadow_of__soul

  i'm trying to set up a server structure for an application i'm building in Node.js with socket.io. My setup is: HAProxy frontend forward to -> apache2 as default backend (or nginx, is apache in this local test) -> node.js app if the url has socket.io in the request AND a domain name i have something like: global log 127.0.0.1 local0 log 127.0.0.1 local1 notice maxconn 4096 user haproxy group haproxy daemon defaults log global mode http maxconn 2000 contimeout 5000 clitimeout 50000 srvtimeout 50000 frontend all 0.0.0.0:80 timeout client 5000 default_backend www_backend acl is_soio url_dom(host) -i socket.io #if the request contains socket.io acl is_chat hdr_dom(host) -i chaturl #if the request comes from chaturl.com use_backend chat_backend if is_chat is_soio backend www_backend balance roundrobin option forwardfor # This sets X-Forwarded-For timeout server 5000 timeout connect 4000 server server1 localhost:6060 weight 1 maxconn 1024 check #forwards to apache2 backend chat_backend balance roundrobin option forwardfor # This sets X-Forwarded-For timeout queue 50000 timeout server 50000 timeout connect 50000 server server1 localhost:5558 weight 1 maxconn 1024 check #forward to node.js app The problem comes when i made a request to something like www.chaturl.com/index.html it load perfectly but fails to loads the socket.io files (www.chaturl.com/socket.io/socket.io.js) why it redirect to apache (and should redirect to the node.js app that serve the files). The weird thing is that if i access directly to the socket.io file, after refreshing a few times, it loads, so i suppose is "caching" the forwarding for the client when it makes the first request and reach the apache server. Any suggestion of how this can be solved? or what i can try or look about this?

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• NRPE: Unable to read output with check_connections plugin

  - by Wlodzimierz

  I'm using plugin which gives me warning or crtis with established connections. If I run it on local machine it gives: *root@graber:/usr/lib/nagios/plugins# ./check_connections -w 1 -c 5 -C sshd CRITICAL Established connections: 6* I know, I run as root. But: Rights to the file: root@graber:/usr/lib/nagios/plugins# ls -all check_connections -rwxr-xr-x 1 nagios nagios 5459 2012-07-06 10:19 check_connections /etc/sudoers: root@graber:/usr/lib/nagios/plugins# cat /etc/sudoers Defaults env_reset root ALL=(ALL:ALL) ALL %admin ALL=(ALL) ALL nagios ALL=(ALL) NOPASSWD: /usr/bin/lsof nagios ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/ /etc/nagios/nrpe.cfg: *nrpe_user=nagios nrpe_group=nagios* *dont_blame_nrpe=1* *command_prefix=/usr/bin/sudo command[check_connections]=/usr/lib/nagios/plugins/check_connections -w 1 -c 5 -C sshd* log from remote: *2012-07-06T11:12:49+02:00 graber nrpe[25928]: Handling the connection... 2012-07-06T11:12:49+02:00 graber nrpe[25928]: Host address is in allowed_hosts 2012-07-06T11:12:49+02:00 graber nrpe[25928]: Host is asking for command 'check_connections' to be run... 2012-07-06T11:12:49+02:00 graber nrpe[25928]: Running command: /usr/lib/nagios/plugins/check_connections -w 1 -c 5 -C sshd 2012-07-06T11:19:11+02:00 graber nrpe[26100]: Return Code: 2, Output: NRPE: Unable to read output* Why is this happening? I'm out of ideas, I've searched google for 2 days now :)

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• How to get nginx to pass HTTP_AUTHORIZATION header to Apache

  - by codeinthehole

  Am using Nginx as a reverse proxy to an Apache server that uses HTTP Auth. For some reason, I can't get the HTTP_AUTHORIZATION header through to Apache, it seems to get filtered out by Nginx. Hence, no requests can authenticate. Note that the Basic auth is dynamic so I don't want to hard-code it in my nginx config. My nginx config is: server { listen 80; server_name example.co.uk ; access_log /var/log/nginx/access.cdk-dev.tangentlabs.co.uk.log; gzip on; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_read_timeout 120; location / { proxy_pass http://localhost:81/; } location ~* \.(jpg|png|gif|jpeg|js|css|mp3|wav|swf|mov|doc|xls|ppt|docx|pptx|xlsx|swf)$ { if (!-f $request_filename) { break; proxy_pass http://localhost:81; } root /var/www/example; } } Anyone know why this is happening? Update - turns out the problem was something I had overlooked in my original question: mod_wsgi. The site in question here is a Django site, and it turns out that Apache does get the auth variables passed through, however mod_wsgi filters them out. The resolution is to use: WSGIPassAuthorization On See http://www.arnebrodowski.de/blog/508-Django,-mod_wsgi-and-HTTP-Authentication.html for more details

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• Networking 2 Virtual PC with one VPC as DHCP server

  - by vivek

  My host OS is Win XP Professional. The host has a real network connection via DSL and I created a second network connection using Microsoft Loopback Adapter. Internet connection sharing is enabled. The Microsoft Loopback adapter has a IP address of 192.168.0.1. I have 1 Virtual PC which has Windows Server 2003. I have setup the network connection on this VPC to use Microsoft Loopback Adapter. I setup this VPC to be the Domain Controller , DNS Server and DHCP Server. I set this to a static IP address 192.168.0.2 (on the same subnet as the MS Loopback adapter) I have a second Virtual PC which also has Windows Server 2003. The network connection on this VPC is set to "Local Only". I want this VPC to get its IP address from the 1st VPC on which I setup as a DHCP server. What i want is the 2 VPC should be in a network with one of the VPC acting as the domain controller, DNS Server and DHCP server. The second VPC shoud get its IP address from the 1st VPC. It should be a part of the domain of the 1st VPC. When i tried to make the second VPC get the IP address from the first VPC I am not succeeding. Can somebody post some suggestions on how to go about this ?

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• How does Linux determine the SCSI address of a disk?

  - by Chris Sears

  Greetings, I'm working with RHEL 5.5 guest VMs under VMware ESX 4. When I configure the virtual disks in the VM hardware settings, each disk has a SCSI address in the format "N:M". For example, "1:3" would mean SCSI host number 1 and SCSI target ID 3. When I look at the disk info from the VM's BIOS or a Windows OS, the detected SCSI address info matches up with the virtual hardware settings. But under Linux, the SCSI address components don't match up, at least not completely or consistently. I've tried the three supported virtual SCSI and SAS drivers and they all seem to be "broken", but in different ways. Here's a list of the virtual hardware addresses vs what was detected under Linux with each of the drivers: Driver vHW Addr Linux Addr -------- -------- ---------- LSI SAS 0:0 0:0 LSI SAS 0:3 0:1 LSI SAS 0:6 0:2 LSI SCSI 1:1 2:1 LSI SCSI 1:4 2:4 LSI SCSI 1:7 2:7 pvSCSI 2:2 1:2 pvSCSI 2:5 1:5 pvSCSI 2:8 1:8 My main question is why does this happen under Linux? The next question is: how do I get it fixed or fix it myself? If I was going to guess, I'd say it's an issue with how the kernel is handing out the SCSI host number and how the Linux SCSI driver (included with VMware tools) is detecting the SCSI target number. Perhaps the order the drivers are loaded also has something to do with the issue. I'm guessing this would not involve udev, but I could be wrong. Any thoughts would be appreciated. Thanks! PS. My environment is VMware, but I don't need an answer for these drivers specifically. I imagine this might be a problem with any SCSI driver under Linux.

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• Nginx + PHP-FPM Timeouts, almost zero load consumption?

  - by javipas

  I've got a server running on a Linode with Ubuntu 10.04 LTS, Nginx 0.7.65, MySQL 5.1.41 and PHP 5.3.2 with PHP-FPM. There is a WordPress blog on it, updated to WordPress 3.2.1 recently. I have made no changes to the server (except updating WordPress) and while it was running fine, a couple of days ago I started having downtimes. I tried to solve the problem, and checking the error_log I saw many timeouts and messages that seemed to be related to timeouts. The server is currently logging this kind of errors: 2011/07/14 10:37:35 [warn] 2539#0: *104 an upstream response is buffered to a temporary file /var/lib/nginx/fastcgi/2/00/0000000002 while reading upstream, client: 217.12.16.51, server: www.mydomain.com, request: "GET /page/2/ HTTP/1.0", upstream: "fastcgi://127.0.0.1:9000", host: "www.mydomain.com", referrer: "http://www.mydomain.com/" 2011/07/14 10:40:24 [error] 2539#0: *231 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 46.24.245.181, server: www.mydomain.com, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.mydomain.com", referrer: "http://www.google.es/search?sourceid=chrome&ie=UTF-8&q=mydomain" and even saw this previous serverfault discussion with a possible solution: to edit /etc/php/etc/php-fpm.conf and change request_terminate_timeout=30s instead of ;request_terminate_timeout= 0 The server worked for some hours, and then broke again. I edited the file again to leave it as it was, and restarted again php-fpm (service php-fpm restart) but no luck: the server worked for a few minutes and back to the problem over and over. The strange thing is, although the services are running, htop shows there is no CPU load (see image) and I really don't know how to solve the problem. The config files are on pastebin The php-fpm.conf file is here The /etc/nginx/nginx.conf is here The /etc/nginx/sites-available/www.mydomain.com is here Please help :(

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• netstat on fresh install of Solaris 10 update 9

  - by cjavapro

  I am attempting to decipher the below output bash-3.00$ netstat -a UDP: IPv4 Local Address Remote Address State -------------------- -------------------- ---------- *.sunrpc Idle *.* Unbound *.32771 Idle TCP: IPv4 Local Address Remote Address Swind Send-Q Rwind Recv-Q State -------------------- -------------------- ----- ------ ----- ------ ----------- *.* *.* 0 0 49152 0 IDLE *.sunrpc *.* 0 0 49152 0 LISTEN *.* *.* 0 0 49152 0 IDLE localhost.5987 *.* 0 0 49152 0 LISTEN localhost.898 *.* 0 0 49152 0 LISTEN localhost.32771 *.* 0 0 49152 0 LISTEN localhost.5988 *.* 0 0 49152 0 LISTEN localhost.32772 *.* 0 0 49152 0 LISTEN *.ssh *.* 0 0 49152 0 LISTEN *.32785 *.* 0 0 49152 0 BOUND localhost.6788 *.* 0 0 49152 0 LISTEN localhost.6789 *.* 0 0 49152 0 LISTEN localhost.32782 *.* 0 0 49152 0 LISTEN localhost.smtp *.* 0 0 49152 0 LISTEN localhost.submission *.* 0 0 49152 0 LISTEN server-host-name.ssh pc-host-name.51269 64868 51 49640 0 ESTABLISHED TCP: IPv6 Local Address Remote Address Swind Send-Q Rwind Recv-Q State If --------------------------------- --------------------------------- ----- ------ ----- ------ ----------- ----- *.* *.* 0 0 49152 0 IDLE *.ssh *.* 0 0 49152 0 LISTEN SCTP: Local Address Remote Address Swind Send-Q Rwind Recv-Q StrsI/O State ------------------------------- ------------------------------- ------ ------ ------ ------ ------- ----------- 0.0.0.0 0.0.0.0 0 0 102400 0 32/32 CLOSED Active UNIX domain sockets Address Type Vnode Conn Local Addr Remote Addr ffffffff84e25ab8 stream-ord ffffffff8569c740 00000000 /var/run/.inetd.uds bash-3.00$ It looks to me like we have the following items UDP IPv4 Open ports sunrpc, 32771 Question 1: What is *.* Unbound? TCP IPv4 Open ports sunrpc, ssh 10 ports open only for localhost The open ssh connection from my PC Question 2: What is *.32785 *.* 0 0 49152 0 BOUND? Question 3: What is *.* *.* 0 0 49152 0 IDLE? (shows up twice) IPv6 Open port ssh Question 3: What is *.* *.* 0 0 49152 0 IDLE? Question 4: What is SCTP? Question 5: What is Active UNIX domain sockets

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• dig lookup different from system lookup

  - by simao

  Hello, I am running dd-wrt and I configured it's dns server to resolve a few hosts inside my network. When I use dig to lookup these hosts, they are resolved OK, but when I try to ping those hosts I always receive an unknown host error message. For example: obe:~ simao$ dig dd-wrt ; <<>> DiG 9.6.0-APPLE-P2 <<>> dd-wrt ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44026 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;dd-wrt. IN A ;; ANSWER SECTION: dd-wrt. 0 IN A 192.168.1.1 But then: obe:~ simao$ ping dd-wrt ping: cannot resolve dd-wrt: Unknown host Any ideas? Thanks.

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• Ram question in VMware Server 2

  - by ToreTrygg

  Hi, I understand from the VMware Server 2 documentation that VMware Server 2 is capable of running a 64-bit guest OS underneath a 32-bit host OS, as long as the hardware running the box is 64-bit capable. Here's my situation. We currently have an underutilized XEON X3220 Quad Core 64bit Server, running Server 2003, 32-bit and 2gb of RAM (the motherboard is capable of 8gb ram). The server is currently used mainly for file and print services. It is also running Active Directory, Novell eDirectory and Groupwise 6.5. We are planning a micration to Microsoft Exchange, so the Novell eDirectory and Groupwise services will eventually be purged from this box, leaving only Active Directory, File and Print services. Being that this server is underutilized we are hoping to save hardware costs and virtualize our new Exchange investment. My question is this. Will VMware allow access to the "invisible" extra memory that Windows 32-bit won't see. Meaning, if we increase the full amount of system ram to 8gb (yes, I know the 32-bit host OS will only see a maximum of 4gb), will I be able to assign maybe 5gb to the new Server 2008 64-bit OS running Exchange and leave 3gb for the Guest OS (or maybe even a 6, 2 split). The second part of that would be, would it be better to just convert the main OS currently running to an image, convert the machine itself to ESXi and run both OSes as images under ESXi. Downtime for this box is critical, so my preference is most definitly with the first option because it presents very minimal downtime. Doing the second would make downtime quite a few hours to image the machine and then convert the image to a VMware Image.

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• Postfix: Modify sender address based on recipient

  - by PJ P

  We have a Postfix server that receives mail from our application servers. Senders are in the form [email protected] (where host.fqdn can vary, depending on source server) and recipients can be internal or external users. Messages going to external users should have the sender changed to [email protected]. I have tried using canonical maps, but since that is handled by the cleanup daemon, before any transport decisions are made, it would affect all sender addresses. I have also tried creating a custom smtp transport with generic mappings and configuring transport_maps to use that custom smtp transport for external domains. However, generic mappings affect both sender and recipient addresses. Lastly, I've tried the following: Create a custom smtpd daemon that specifies sender canonical maps and a unique transport table. Send all externally addressed mail to that custom daemon. Ideally, sender canonical maps would transform the sender address and the unique transport table would relay messages to the internet. However, evidently, only one transport table can be used per Postfix instance. I want to avoid creating an entirely new Postfix instance to accommodate this rewriting. Any suggestions? (and thanks in advance)

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• IP Blacklists and suspicious inbound and outbound traffic

  - by Pantelis Sopasakis

  I administer a web server and recently we had our IP banned (!) from our host after they received a notification e-mail for abuse. In particular our server is allegedly involved in spam attacks over HTTP. The content of the abuse report email we received was not much informative - for example the IP addresses our server is supposed to have attacked against are not included - so I started a wireshark session checking for suspicious traffic over TCP/HTTP while trying to locate possible security holes on the system. (Let me note that the machine runs a Debian OS). Here is an example of such a request... Source: 89.74.188.233 Destination: 12.34.56.78 // my ip Protocol: HTTP Info: GET 'http://www.media.apniworld.com/image.php?type=hv' HTTP/1.0 I manually blacklisted this host (as well as some other ones) blocking them with iptables, but I can't keep on doing manually all day long... I'm looking for an automated way to block such IPs based on: Statistical analysis, pattern recognition or other AI-based analysis (Though, I'm reluctant to trust such a solution, if exists) Public blacklists Using DNSBL I actually found out that 89.74.188.233 is blacklisted. However other IPs which are strongly suspicious like 93.199.112.126 (i.e. http://www.pornstarnetwork.com/account/signin), unfortunately were not blacklisted! What I would like to do is to automatically connect my firewall with DNSBL (or some other blacklist database) and block all traffic towards blacklisted IPs or somehow have my local blacklist automatically updated.

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• SATA Driver for Acer Aspire One D257

  - by Robert Niestroj

  i have a Acer Aspire One D257. In this netbook the hard disk is defect so i bought a new one. Now i want to reinstall Windows 7. Im using an external DVD Drive plugged into USB. The Windows 7 DVD is staring, Win7 setup is starting and when it comes to Hard Drive options it says that no drive was detected and i should try search for drivers. It shows me this window: Screenshot from web Now i cant find the right drivers for this netbook to continue with the installation. The laptop has the newest BIOS - 1.15, it is reset to factory default settings except that i enabled the Boot Menu prompt with F12. From the Acer Support Website i've downloaded the SATA AHCI Driver and the Chipset Driver. I unpacked both to a USB flashdrive in seperate folders. When i select the SATA AHCI Driver it does not find any drivers. When i uncheck the checkbox "Hide drivers that are not compatible with hardware on this computer" it shows one driver: Acer HWID (path_to\1.inf). When i continue with this driver i got an error message that says something like: No new devices found. Check if the driver files are on the installation disk. When i show him the Chipset Driver it sees a lot more driver. When i uncheck the checkbox "Hide drivers that are not compatible with hardware on this computer" it show some drivers: Intel N10 Family DMI Bridge Intel N10/ICH7 Family PCI Express Root Port Intel N10/ICH7 SMBUS Controller Intel N10/ICH7 Family USB Universal Host Controller Intel N10/ICH7 Family USB2 Enhanced Host Controller Intel N10/ICH7 Family Interface LPC Controller When i uncheck this checkbox i get a lot more drivers, and some SATA Drivers but the also do not work. I get the same error message as before. Can someone help me find a driver that should work or am i doing anything else wrong?

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• trying to figure out how to bridge two virtual networks together and in turn bridge that to the internet for a virtual inline IDS/IPS system

  - by Tony robinson

  I'm trying to figure out how to bridge two vmware (server or workstation, workstation) or virtualbox networks together with a linux IDS/IPS system transparently inline between both the virtual networks. How do I accomplish this? I understand how to bridge to virtual networks together, but how to I make the linux virtual machine sit between them and force traffic to go across the transparent bridge? I would like to have something along the lines of: vmnet a various vms host-only network ---- inline linux box vmnet a boxes forced to go through here to get to the internet --- vmnet b network with internet access configured as either NAT or bridged -- internet I know that basically the linux box needs two virtual nics, one on vmnet a and vmnet b, but other than that, I don't know how to force all the traffic to go across the "transparent" bridging linux box on its way to the internet. Do vmnet a and b have to be the same ip network with the same default route? does vmnet a not have a default route and vmnet b have a default route? I've read in vmware forums that on the linux host you need to change permissions on the vmnet files for promiscuous mode? is this true? how do you configure this scenario on a windows box?

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• When connecting to PPTP Centos via Windows 7 VPN, I get error 2147943625

  - by Charlie Dyason

  The remote computer refused the network connection. phrase has been my arch enemy for the past week now I recently "bought" a VPS server, I gave up trying to configure it with OpenVPN, all the issues were making me lose my mind, so I tried the easier way with pptp, but i figure, both are leading to a dead end... I followed this post (many others too but this is the unlucky one), http://blog.secaserver.com/2011/10/install-vpn-pptp-server-centos-6/ and it all goes well with the setup, however, I run into this error when connecting to the VPN in Windows 7 here is a pic of the error: Image So I do not know what I have done wrong... When connecting, Code: Select all netstat -apn | grep -w 1723 before connecting: netstat -apn |grep -w 1723 tcp 0 0 0.0.0.0:1723 0.0.0.0:* LISTEN 1137/pptpd after the error came I tried again: netstat -apn |grep -w 1723 tcp 0 0 0.0.0.0:1723 0.0.0.0:* LISTEN 1137/pptpd tcp 0 0 41.185.26.238:1723 41.13.212.47:49607 TIME_WAIT - iptables: # Generated by iptables-save v1.4.7 on Fri Nov 1 18:14:53 2013 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [63:8868] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i eth0 -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -i eth0 -p tcp -m tcp --dport 1723 -j ACCEPT -A INPUT -i eth0 -p gre -j ACCEPT -A FORWARD -i ppp+ -o eth0 -j ACCEPT -A FORWARD -i eth0 -o ppp+ -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Fri Nov 1 18:14:53 2013 # Generated by iptables-save v1.4.7 on Fri Nov 1 18:14:53 2013 *nat : PREROUTING ACCEPT [96:12732] : POSTROUTING ACCEPT [0:0] : OUTPUT ACCEPT [31:2179] -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Fri Nov 1 18:14:53 2013 options.pptpd the only changes was the require-mppe # BSD licensed ppp-2.4.2 upstream with MPPE only, kernel module ppp_mppe.o # {{{ refuse-pap refuse-chap refuse-mschap # Require the peer to authenticate itself using MS-CHAPv2 [Microsoft # Challenge Handshake Authentication Protocol, Version 2] authentication. require-mschap-v2 require-mppe # Require MPPE 128-bit encryption # (note that MPPE requires the use of MSCHAP-V2 during authentication) require-mppe-128 # }}} I check the iptables, everything is normal, all INPUTs, etc are before rejects, username and password I also checked in chap-secrets file, I am really puzzled...

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• Using my old PC as a web/file server?

  - by Garrett

  I have an old desktop computer that I've been trying to sell for AGES. I guess nobody is looking for computers because it was advertised at a dirt cheap price on craigslist, local papers, etc. Anyways, I was wondering if it would be worth it to set it up as a home file server, a web dev server (I have a web host for actual production use), and maybe host a few server applications (ex: ventrillo). The computer is actually an old Dell that I cannibalized after the motherboard being destroyed by lightning, so it has fairly new parts in it. The specs are: P4 3.4GHz w/ HT and Artic Cooling Freezer 7 3GB DDR2 533 RAM 80GB hdd (will upgrade the hard drive if it's even worth using as a server) basic dvd rom 430 Watt Thermaltake PSU (it might be important to note that it is only 60% efficiency) ATI Radeon x600 256MB Antec 300 case It's not a really beefy machine, I just can't see giving it away or putting it in the corner to just collect dust. I have Windows Server 2008 R2 Standard and I am confident in my skills in operating most Linux operating systems. I'd also be using it to tinker with when I learn new things in my server admin classes (I'm finishing my 2nd year in college at the moment so I'm still learning) Also, my house is quite old and the electrical wiring is pretty poor (it MIGHT be up to code, then again, where I live most people don't even know what regulations are or let alone know how to spell it...) Would it be safe to leave it running all day and is it going to run up my electric bill because of the PSU efficiency? I only have 5mbit cable internet, but I won't be running very bandwidth intense services on it so it should be ok. I should elaborate on why I am concerned about the power. The circuits should be fine, but I'm more concerned about fire hazard. What is the likelihood that the server could cause an electrical fire? Again, thank you all for the feedback!

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• fedora, dhcpd fails to start

  - by soxs060389

  History: I got a tiny shiny plugserver which I want to plug to my ADSL router (or however you want to call it) on one end (eth0), and the other end (eth1) I want to run a dhcp server for my LAN. ATM I am stuck with getting LAN to work. OS is fedora 12. I configured my /etc/dhcp/dhcpd.conf like this: # # DHCP Server Configuration file. # see /usr/share/doc/dhcp*/dhcpd.conf.sample # see 'man 5 dhcpd.conf' # option domain-name "unknown.org"; option domain-name-servers 192.168.44.1; option subnet-mask 255.255.255.0; option broadcast-address 192.168.44.255; default-lease-time 86400; max-lease-time 172800; subnet 192.168.44.0 netmask 255.255.255.0 { host fedorabigbox { hardware ethernet 00:19:66:8E:61:74; fixed-address 192.168.44.21; } #host mobile #{ # hardware ethernet ***; # fixed-address 192.168.44.22; #} range 192.168.44.100 192.168.44.110; option routers 192.168.44.1; } # this is just dummy, as read many howtos, some suggesting to add a subnet blah netmask blah for each interface subnet 192.168.33.0 netmask 255.255.255.0 { range 192.168.33.100 192.168.33.110; option routers 192.168.33.1; } But the server fails to start when trying to start it via /etc/init.d/dhcpd start In general it would be nice if someone can point me to a in detail explanation of how network works, I am pretty new to this stuff. More concrete question: How to point the subnets to eth1 and the other to eth0, how can this be achieved? Does someone see any errors or flaws? Syntax should be correct, allready checked that with the dhcpd syntax check. Thanks for any help

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• Can't connect to EC2 instance Permission denied (publickey)

  - by Assad Ullah

  I got this when I tried to connect my new instace (UBUNTU 12.01 EC2) with my newly generated key sh-3.2# ssh ec2-user@**** -v ****.pem OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Applying options for * debug1: Connecting to **** [****] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /var/root/.ssh/id_rsa type -1 debug1: identity file /var/root/.ssh/id_rsa-cert type -1 debug1: identity file /var/root/.ssh/id_dsa type -1 debug1: identity file /var/root/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1 debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.6 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '****' is known and matches the RSA host key. debug1: Found key in /var/root/.ssh/known_hosts:4 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Trying private key: /var/root/.ssh/id_rsa debug1: Trying private key: /var/root/.ssh/id_dsa debug1: No more authentication methods to try.

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• Unable to browse to apache service, Service is running

  - by Jeff

  Summary I have a very peculiar problem. I am not able to open the "It Works!" page after installing a fresh server with apache. I am able to ssh to the box (from outside the network). Apache seems to be running on my Centos6.4x86_64 box just fine. Nothing useful in /var/logs/httpd/*. What am I missing? The setup I am outside the network right now. The "server" is a VM on my home computer running bridged mode. public ip: A.B.C.D Host: 192.168.1.5 VM: 192.168.1.8 I have a verizon fios router that is forwarding ports 22, 80, and 8888 to the VM. I am able to ssh over port 22, but I am not able to browse to the public URL over port 80. so A.B.C.D:22 is working, but http://A.B.C.D:80 is not. What I've tried nmap to see if it is listening: nmap -sT -O localhost Starting Nmap 5.51 ( http://nmap.org ) at 2013-10-25 11:10 EDT Nmap scan report for localhost (127.0.0.1) Host is up (0.000040s latency). Other addresses for localhost (not scanned): 127.0.0.1 Not shown: 996 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 3306/tcp open mysql I tried going to it locally (lynx) and it does work. So, is the problem in my ports?

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• MySQL ODBC + SSL with only the SSL Cipher option?

  - by sdek

  Does anybody know how I can have an SSL encrypted connection over MySQL ODBC without the cert options? So I asked my web host to setup a MySQL+SSL connection so that we can access our website's database via ODBC or MySQL Query Browser (or the likes). I am able to get an encrypted connection with the standard mysql client and MySQL Query Browser, but I can't get the ODBC connection to work. Looking for a little help... The way they set it up is a little different from the way I have read about on the interweb. The host didn't setup a cert, or at least I don't think so - I don't need to specify any cert options in my connection. I just need to specify the ssl cipher. Here is how I connect with the mysql client: mysql -h myhost.com -u myuser --ssl-cipher=3DES -p That works to get an encrypted connection. At least I am pretty sure it works because when I run mysql> \s I get SSL: Cipher in use is EDH-RSA-DES-CBC3-SHA Also, when I put EDH-RSA-DES-CBC3-SHA into the SSL Cipher field of MySQL Query Browser (without specifying any other SSL options) it connects just fine. But then when I try to do the same thing with my MySQL ODBC 3.5.1 and 5.1 I get a generic error. Here is the error from the 5.1 Driver. Connection Failed: [HY000] [MySQL][ODBC 5.1 Driver]SSL connection error

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• Controlling clone access to multiple mercurial repos served via hgwebdir.cgi

  - by chrislawlor

  I'm trying to host multiple hg repositories to use for my clients. I need to control access to each repository individually - not just push access, but clone as well. I've got an .htaccess set which requires authentication globally: AuthUserFile /path/to/hgweb.passwd AuthGroupFile /dev/null AuthName "Chris Lawlor Client Mercurial Repositories" AuthType Basic <Limit GET POST PUT> Require valid-user </Limit> <FilesMatch "\.(htaccess|passwd|config|bak)$"> Order Allow,Deny Deny from all </FilesMatch> Then in each repository, I've got a .hg/hgrc file requiring a valid user [web] allow_push = <comma seperated user list> This almost does what I need. The problem is that I need to add ALL my clients to hgweb.passwd, which gives them clone access to ALL of the repositories. The only solution I can think of is to have another .htaccess and .passwd file in EACH repository. I don't really want to do that though, seems a little convoluted. I can already specify a list of authorized users for each repository in that repos' hgrc file with the allow_push setting. If only there were an allow_clone setting as well... All the documentation I've found for hgwebdir.cgi is incomplete. I've read: http://mercurial.selenic.com/wiki/HgWebDirStepByStep http://hgbook.red-bean.com/read/collaborating-with-other-people.html#sec:collab:cgi http://hgbook.red-bean.com/read/collaborating-with-other-people.html And others. I've yet to find a comprehensive list of hgrc settings. I guess this is as much an Apache question than a mercurial question. Unless I can find a better approach, I'll be going with a seperate .htaccess and .passwd file for each repo. This is a virtual host on Webfaction if it matters - set up roughly like this http://docs.webfaction.com/software/mercurial.html

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• Trouble with backslash characters and rsyslog writing to postgres

  - by Flimzy

  I have rsyslog 4.6.4 configured to write mail logs to a PostgreSQL database. It all works fine, until the log message contains a backslash, as in this example: Jun 12 11:37:46 dc5 postfix/smtp[26475]: Vk0nYDKdH3sI: to=<[email protected], relay=----.---[---.---.---.---]:25, delay=1.5, delays=0.77/0.07/0.3/0.35, dsn=4.3.0, status=deferred (host ----.---[199.85.216.241] said: 451 4.3.0 Error writing to file d:\pmta\spool\B\00000414, status = ERROR_DISK_FULL in "DATA" (in reply to end of DATA command)) The above is the log entry, as written to /var/log/mail.log. It is correct. The trouble is that the backslash characters in the file name are interpreted as escapes when sent to the following SQL recipe: $template dcdb, "SELECT rsyslog_insert(('%timereported:::date-rfc3339%'::TIMESTAMPTZ)::TIMESTAMP,'%msg:::escape-cc%'::TEXT,'%syslogtag%'::VARCHAR)",STDSQL :syslogtag, startswith, "postfix" :ompgsql:/var/run/postgresql,dc,root,;dcdb As a result, the rsyslog_insert() stored procedure gets the following value for as msg: Vk0nYDKdH3sI: to=<[email protected], relay=----.---[---.---.---.---]:25, delay=1.5, delays=0.77/0.07/0.3/0.35, dsn=4.3.0, status=deferred (host ----.---[199.85.216.241] said: 451 4.3.0 Error writing to file d:pmtaspoolB The \p, \s, \B and \0 in the file name are interpreted by PostgreSQL as literal p, s, and B followed by a NULL character, thus early-terminating the string. This behavior can be easiily confirmed with: dc=# SELECT 'd:\pmta\spool\B\00000414'; ?column? -------------- d:pmtaspoolB (1 row) dc=# Is there a way to correct this problem? Is there a way I'm not finding in the rsyslog docs to turn \ into \\?

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