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• Unable to remove invalid(orphaned?) SPNs

  - by Brent

  tldr version: Renamed domain from internal.domain.com to domain.com, have 4 SPNs that am unable to remove from DC. So my domain was internal.domain-name.com and I renamed it to domain-name.com and I thought everything was good. Several days later, I start setting up my RD Gateway and am noticing issues surrounding group policy. I run dcdiag and the SystemLog part fails. Starting test: SystemLog A warning event occurred. EventID: 0x00001796 Time Generated: 08/25/2014 02:48:30 Event String: Microsoft Windows Server has detected that NTLM authentication is presently being used between clients and this server. This event occurs once per boot of the server on the first time a client uses NTLM with this server. An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:49:18 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:49:48 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:52:47 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: This made me check my AD for possible connections to the .internal domain. I found four which I remove by: setspn -D E3514235-4B06-11D1-AB04-00C04FC2DCD2/d79fa59c-74ad-4610-a5e6-b71866c7a157/internal.domain-name.com ServerName setspn -D HOST/ServerName.domain-name.com/internal.domain-name.com ServerName setspn -D GC/ServerName.domain-name.com/internal.domain-name.com ServerName setspn -D ldap/ServerName.domain-name.com/internal.domain-name.com ServerName Also, checking my dns records, there's an internal subdomain that I can delete but it comes back as well. I've tried removing the spns to no avail. Is there something I'm missing?

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• Tuning up a MySQL server

  - by NinjaCat

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

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• Switch between network configurations via command line in fedora 17

  - by Mike Fairhurst

  I have two different setups I use on my work laptop; one enables synergy over an ethernet ssh tunnel with my work computer on the local network, and the other opens an HTTP tunnel to my work computer from outside the network. When I have wifi enabled at work, my laptop seems to use it by preference. This makes synergy run incredibly slowly. At home I must use wifi. I have scripts that begin my ssh tunnels, add my ssh keys, and starts up other programs like synergy, and close themselves when I shut my laptop. However, every day I have to start out my routine by opening my gnome-control-center and turning on my ethernet. I have tried route add and ifup, none of it works, so I dove into gnome-control-center's source code and found that it enabled the connection by libnm's method nm_client_activate_connection with some libnm specific structs that I am having trouble tracking down. I'm not much of a c programmer, and I'm not familiar with either GTK or libnm. Does anybody know what fedora 17 does with ethernet connections to fully enable them? Or does anybody know what libnm does to fully enable an ethernet connection? Do I have to write a c script to run libnm for me to fully emulate whatever gnome-control-center is trying to do?

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• Why is this iptables rule that does port forwarding not working?

  - by videoguy

  I have a server bound to localhost:7060. It is using ipv6 socket instead of ipv4. Below is netstat outout. # netstat -an Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 10.200.32.98:1720 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:4122 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:4123 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:4123 127.0.0.1:43051 ESTABLISHED tcp 0 0 10.200.32.98:5555 10.200.32.44:53162 ESTABLISHED tcp6 0 0 :::5060 :::* LISTEN tcp6 0 0 ::ffff:127.0.0.1:7060 :::* LISTEN tcp6 0 0 :::23 :::* LISTEN tcp6 0 0 ::ffff:10.200.32.98:23 ::ffff:10.200.32.142:43505 ESTABLISHED tcp6 0 0 ::ffff:127.0.0.1:43051 ::ffff:127.0.0.1:4123 ESTABLISHED tcp6 0 0 ::ffff:10.200.32.98:23 ::ffff:10.200.32.44:53195 ESTABLISHED udp6 0 0 :::5060 :::* CLOSE # I want to setup a port forwarding rule that accepts connections on port 24 (on all interfaces loopback as well as eth0) and forward the data to localhost:7060. This is how I am setting up the iptables rule: iptables -t nat -A PREROUTING -p tcp --dport 24 -j DNAT --to 127.0.0.1:7060** It is not working. When I telnet from different box, I see the following $telnet 10.200.32.98 24 Trying 10.200.32.98... If I change the server to bind to *:7060 and set the following rule, it seems to work fine. iptables -t nat -A PREROUTING -p tcp --dport 24 -j REDIRECT --to-port 7060 But that will make my server available on WAN interface which I don't like. I feel it had something to do with ipv6 socket (tcp6 line in netstat output). This whole thing is done on an Android device with custom built Android platform image. How do I get this working?

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• Use both OpenVPN & eth0 together

  - by shadyabhi

  I connect to a VPN using openVPN. Now, after the connection is established, all my traffic goes through tun0. My LAN gateway is 10.100.98.4... So, for apps to use my direct internet connnection I did sudo route add default gw 10.100.98.4 But, I cant use tun0 now. I know this because curl --interface tun0 google.com doesnt give me anything.. How do I go about using both connections simultaneously. How can I achieve that? ROUTING TABLES:- Without VPN running:- Destination Gateway Genmask Flags Metric Ref Use Iface 10.100.98.0 * 255.255.255.0 U 1 0 0 eth0 default 10.100.98.4 0.0.0.0 UG 0 0 0 eth0 With VPN:- Destination Gateway Genmask Flags Metric Ref Use Iface 10.10.0.1 10.10.54.230 255.255.255.255 UGH 0 0 0 tun0 10.10.54.230 * 255.255.255.255 UH 0 0 0 tun0 free-vpn.torvpn 10.100.98.4 255.255.255.255 UGH 0 0 0 eth0 10.100.98.0 * 255.255.255.0 U 1 0 0 eth0 default 10.10.54.230 0.0.0.0 UG 0 0 0 tun0 After the route command- Destination Gateway Genmask Flags Metric Ref Use Iface 10.10.0.1 10.10.54.230 255.255.255.255 UGH 0 0 0 tun0 10.10.54.230 * 255.255.255.255 UH 0 0 0 tun0 free-vpn.torvpn 10.100.98.4 255.255.255.255 UGH 0 0 0 eth0 10.100.98.0 * 255.255.255.0 U 1 0 0 eth0 default 10.100.98.4 0.0.0.0 UG 0 0 0 eth0 default 10.10.54.230 0.0.0.0 UG 0 0 0 tun0

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• Periodic internet connection drops

  - by user9647

  My setup is a dsl modem, and a dlink di 524M router. I'm also using a Witopia VPN which runs through OpenVPN. I've been having trouble with the internet connection dropping very frequently. It comes back shortly, without even a router/modem/computer restart. This happens as frequently as every ten minutes. Occasionally (not often) it will last as long as an hour or two without dropping. When it drops, I can get it back almost immediately by clicking Reconnect in the OpenVPN GUI and letting that do it's thing. It's worth noting that I'm in China. Calling support is a bit difficult because of that. Also I don't really understand all of the router's software, although I've got it generally figured out. I've tried a bunch of stuff, attempts to diagnose and/or fix the problem. No success with any of the following: I've power cycled both the modem and the router. I've tried an ethernet connection to the router. I've connected without the VPN. I've disabled IEEE authentication on all connections. I've checked for viruses. I've tried lifting it off the ground so as to prevent overheating.

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• Router intermittently failing

  - by nomen

  My old Asus router died a few weeks ago, so I thought I'd set up my Debian box to deal with routing my home network. I have a few complications, but I adapted my configuration from a previously working configuration, and I don't see why I am having intermittent problems. But I am having them! Every so often, my SSH connections to the router (and to the Xen virtual machines hosted by the router) just drop. I am unable to use the router's dns server. I can't ping the router. Etc. All of these things work most of the time, but break down intermittently, for a few minutes at a time. (I can provide more details, but I'm not sure what will be helpful) /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback # Gigabit ethernet, internal network auto eth0 allow-hotplug eth0 iface eth0 inet manual # USB ethernet, internet auto eth1 allow-hotplug eth1 iface eth1 inet dhcp # Xen Bridge auto xlan0 iface xlan0 inet static bridge_ports eth0 address 10.47.94.1 netmask 255.255.255.0 As I understand it, this is sufficient to create the network interfaces, and even do some switching between Xen hosts and my eth0 interface. I installed and configured Shorewall to manage routing between the bridge and my internet-facing interface: /etc/shorewall/zones fw firewall net ipv4 lan ipv4 /etc/shorewall/interfaces net eth1 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians lan xlan0 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians,routeback,bridge /etc/shorewall/policy net all DROP info fw net ACCEPT info all all REJECT info /etc/shorewall/rules DNS(ACCEPT) fw net DNS(ACCEPT) lan fw Ping(ACCEPT) lan fw ... and so on, these all work, when the router is accepting traffic at all. /etc/shorewall/masq eth1 10.47.94.0/24 Also, the router is currently "working", and I checked on a problematic client: arp infrastructure infrastructure.mydomain (10.47.94.1) at 0:23:54:bb:7d:ce on en0 ifscope [ethernet] I tried it when the router was down, and I (eventually) got the same response. It took about 30 seconds to return, though.

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• VNC Server that can be used from command line?

  - by jesusiniesta

  I'm looking for a replacement for a custom vnc server that we have been using in my company for a long time. I need a simple executable that can be run from command line by an IT Support software without the user noticing it (our application will warn the user, we don't want him to see we are using that VNC sever). I need it to support Windows and preferably also OSX. The only option I've found is UltraVNC, but I can't configure it from command line to accept loopback connections without authentication. We have already a whole VNC Viewer + VNC Repeater + Bouncers architecture, and the only missing piece is the VNC Server. Do you know any solution you could suggest me? I'm afraid I'll end up developing a new VNC server myself, may be based on an open source one. EDIT: When I said I don't want the user to notice this VNC server, I should have added that I don't want him even noticing the installation. So better if it can be installed silently or can be executed as a portable executalbe (for instance, ultravnc can be installed and ran as a service from command line, or simply executed quietly, with only a notification icon; its problem is that I can't run it without authentication).

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• Strange ssh login

  - by Hikaru

  I am running debian server and i have received a strange email warning about ssh login It says, that user mail logged in using ssh from remote address: Environment info: USER=mail SSH_CLIENT=92.46.127.173 40814 22 MAIL=/var/mail/mail HOME=/var/mail SSH_TTY=/dev/pts/7 LOGNAME=mail TERM=xterm PATH=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games LANG=en_US.UTF-8 SHELL=/bin/sh KRB5CCNAME=FILE:/tmp/krb5cc_8 PWD=/var/mail SSH_CONNECTION=92.46.127.173 40814 my-ip-here 22 I looked in /etc/shadow and find out, that password for is not set mail:*:15316:0:99999:7::: I found this lines for login in auth.log n 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): getting password (0x00000388) Jun 3 02:57:09 gw sshd[2090]: pam_winbind(sshd:auth): pam_get_item returned a password Jun 3 02:57:09 gw sshd[2091]: pam_winbind(sshd:auth): user 'mail' granted access Jun 3 02:57:09 gw sshd[2091]: Accepted password for mail from 92.46.127.173 port 45194 ssh2 Jun 3 02:57:09 gw sshd[2091]: pam_unix(sshd:session): session opened for user mail by (uid=0) Jun 3 02:57:10 gw CRON[2051]: pam_unix(cron:session): session closed for user root and lots of auth failures for this user. There is no lines with COMMAND string for this user. Nothing was found with "rkhunter" and with "ps aux" process inspection, also there is no suspicious connections was found with "netstat" (as I can see) Can anyone tell me how it is possible and what else should be done? Thanks in advance.

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• RDP suggesting a user name when connecting to a server

  - by Neolisk

  Prior to Event X, RDPing to Server 2003 always caused the user name appear blank and Login to be enabled, so you could pick to which domain you would log in. For us it's either local or our domain. Since a recent Event X a domain + user name is being suggested for every server and it's not the most recently used user name. If you remove it manually from RDP dialog, it's still being pre-populated for you, and then at the next available opportunity it returns into General/User name option of RDP dialog. So user name field comes pre-populated and you cannot change to log in locally (only if you manually erase domain specifier - everything before \) - Log in to option is disabled by default. We did not do any changes to our domain or client machines, so I am suspecting some Windows update caused it (and this being Event X). Interesting fact - it does not consistently happen on all machines, and some can login to some servers fine, while other servers keep suggesting a default user name. What could be that Event X and is there a way to fix it? EDIT: I tried this - How to clear remote desktop connections history and specifically this part of it: reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\UsernameHint" /f The problem still persists.

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• IPTables configuration help

  - by Sam

  I'm after some help with setting up IPTables. Mostly the configuration is working, but regardless of what I try I cannot allow localhost to access the local Apache only (i.e. localhost to access localhost:80 only). Here is my script: !/bin/bash Allow root to access external web and ftp iptables -t filter -A OUTPUT -p tcp --dport 21 --match owner --uid-owner 0 -j ACCEPT iptables -t filter -A OUTPUT -p tcp --dport 80 --match owner --uid-owner 0 -j ACCEPT Allow DNS queries iptables -A OUTPUT -p udp --dport 53 -j ACCEPT iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT Allow in and outbound SSH to/from any server iptables -A INPUT -p tcp -s 0/0 --dport 22 -j ACCEPT iptables -A OUTPUT -p tcp -d 0/0 --sport 22 -j ACCEPT Accept ICMP requests iptables -A INPUT -p icmp -s 0/0 -j ACCEPT iptables -A OUTPUT -p icmp -d 0/0 -j ACCEPT Accept connections from any local machines but disallow localhost access to networked machines iptables -A INPUT -s 10.0.1.0/24 -j ACCEPT iptables -A OUTPUT -d 10.0.1.0/24 -j DROP Drop ALL other traffic iptables -A OUTPUT -p tcp -d 0/0 -j DROP iptables -A OUTPUT -p udp -d 0/0 -j DROP Now I have tried many permutations and I'm obviously missing everything. I place them above the in/out bound SSH to/from, so it's not the precedence order. If someone could give me the heads up on allowing only the local machine to access the local web server, that'd be great. Cheers guys.

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• Remote Desktop leaves host unresponsive

  - by Jeff Dalley

  I have my desktop PC at home set up to accept remote connections, and I often connect to it from work on my laptop via mstsc.exe. However, every time I remote to it, I find when I go home that despite the monitor being on - it's not receiving an image and it looks as though the computer is hibernating/asleep. I basically have to restart it whenever I get home and I know there's an answer for why its doing this. More details: When exiting the remote session, I have tried both logging off the account, and closing the RDP window without logging off; both give the same result. When I get home to the desktop I of course try moving the mouse, ctrl+alt+del to see if its responsive to restart, multiple key-press to see if I can get any audio out of it; It seems pretty obvious its sleeping/hibernating in some way: Nothing happens in any of these cases and a physical restart is necessary. Both desktop and laptop are running Windows 7 Ultimate. I'm thinking it really is sleeping/hibernating it, and I'm not sure why because left alone my desktop's power options are set to never turn off the HDD or change its state - I leave it on 24/7. This could be a stupid error on my part but I just can't see it! Thanks.

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• Configuring SQL Server Express 2005

  - by MrTognio

  What's the proper way to configure SQL Server Express 2005 so that it can allow for a number of clients to get connected to the server? I have my application running both in the server machine and the client machines. Given the nature of my application, clients are the branches geographically distant from each other, and the server itself. Every operation the client records must be reported to the server, because the server needs total control over the usage and production. But, what should I consider when configuring the connection in both sides, the server and the client? I'm not as used to SQL Server, I'm a beginner, however through SQL Server Configuration Manager I have set the main options without success. The problem seems to be related to trusted connections even though I have set it to support both windows and SQL Server authentication. When the client tries to connect to the server using windows authentication it displays no table; when it tries to communicate using a password (SQL Server authentication), tables are successfully displayed but no access is allowed... Thanx in advance!

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• Strange WiFi problem - network is "not connected" but works

  - by GalacticCowboy

  Background I'm using a Windows XP tablet PC connected to my home network. I do broadcast the SSID, but otherwise the wireless network is locked down as tight as I can make it - WPA2 with a strong key, MAC filtering, etc. I've had this computer for about 4 years and the router for about 6 months. Before that, the previous router was set up in the same way, and I've never had any particular problems. Problem This morning - as I type this, as a matter of fact - Windows is reporting that none of my network connections are connected. Yet somehow my Internet connectivity still works! ipconfig reports a valid IP address, domain, etc., even though Windows apparently doesn't know about it. I tried repairing the connection and it had no effect - the repair eventually timed out. I'm pretty sure that I could reboot the computer and/or the router, etc. and it would fix the problem. However, I'm more interested in knowing if any of you have ever seen anything like this, and what might have caused it? Since it works I'm not inclined to mess with it too much. My concern is that it's a precursor to bigger problems.

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• How can I prevent a DDOS attack on Amazon EC2?

  - by cwd

  One of the servers I use is hosted on the Amazon EC2 cloud. Every few months we appear to have a DDOS attack on this sever. This slows the server down incredibly. After around 30 minutes, and sometimes a reboot later, everything is back to normal. Amazon has security groups and firewall, but what else should I have in place on an EC2 server to mitigate or prevent an attack? From similar questions I've learned: Limit the rate of requests/minute (or seconds) from a particular IP address via something like IP tables (or maybe UFW?) Have enough resources to survive such an attack - or - Possibly build the web application so it is elastic / has an elastic load balancer and can quickly scale up to meet such a high demand) If using mySql, set up mySql connections so that they run sequentially so that slow queries won't bog down the system What else am I missing? I would love information about specific tools and configuration options (again, using Linux here), and/or anything that is specific to Amazon EC2. ps: Notes about monitoring for DDOS would also be welcomed - perhaps with nagios? ;)

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• Computer wont start, just blinks on and off

  - by Ryan

  This is really strange. I had a comp that was working fine for over a year, then suddenly it started to shut off, it got so bad that I press the power button and in around 30 secs while booting windows it would shut off, then 20 secs... then 10 secs, then it refused to start all together. So I bought a new PSU (850w Thermaltake, the old one was 550w corsair) thinking that was the problem, I fitted the new PSU now and its the same thing, I press the power button and my fans start for a split second (they have led lights on them, so the lights come on) and then everything goes off again. I thought maybe it was my power button that was loose on my comp, luckily I had another chassis near by so I disconnected the powerSW from the old one and put ran the powerSW from the new chassis, press the power on the new chassis and same thing, it blinks for a split second and off again. Double checked connections from the PSU to the cpu power as well as board mobo power, its tight. It's pretty unlikely both the PSUs have the same exact problem so am lost... Suggestions?

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• Linksys SFE2000 Interface

  - by boburob

  I have a real problem with a layer 3 Linksys switch. First, every time it looses power, it seems to reset back to an older config. Not only this, but when this happens it looses interface settings on one subnet. This would not be a problem but I am completely unable to get to the interface on the working side. It allows me to log on and then just displays a blank screen. I have tried this on: IE6 IE7 IE8 IE9 Firefox 3.5 Opera Chrome All with the same results, except for Opera, which loads half the interface but nothing I can really use. I really need to get onto this switch so I can sort out routing and VLAN tagged ports, so if anyone has any ideas on either of these issues please let me know ASAP! Thanks! Also, due to its location and my lack of laptops with serial connections I cannot putty into it. UPDATE: Looked into this a bit more and it looks like this model of switch does not save the current config to boot unless you make sure to save it yourself, which explains the first issue, however the broken interface is more worrying!

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• Cannot connect to MySQL on RDS (Amazon Web Services) from my laptop

  - by Bruno Reis

  I'm having some trouble connecting to a MySQL 5.1 server on an RDS instance on AWS from my laptop. The detailed description of the problem is here: https://forums.aws.amazon.com/thread.jspa?messageID=323397 In short: I have 2 MySQL servers, both with the same db configuration and firewall (security group) configuration. One of them works fine: I can connect to it from my EC2 instances (ie, from inside the AWS cloud) and from my laptop. The other one doesn't: I can connect from my EC2 instances but not from my laptop. The symptom: a connection attempt from my laptop just hangs, and then times out, as if there was a firewall blocking me (ie, silently dropping my SYN packets). I must say that everything has been working fine for a very long time, and this problem began suddenly, 3 days ago, without any modifications to DB parameters or the security groups. My current analysis of the situation: The firewall (ie, security group) cannot be the problem: both MySQL servers share the same firewall configuration -- I can connect to one of them but not to the other. Later on, I even added a rule to allow inbound connections from 0.0.0.0/0 (ie, I turned off the firewall), and nothing. Oh, I also created a new, fresh security group and changed this instance's SG to the new one (to which I first added my ip address, and then 0.0.0.0/0) but still nothing. The credentials cannot be the problem: I use the same from my laptop and from my EC2 instances -- and the user (which is what Amazon calls master user), in the database, has a host of '%'. MySQL is not blocking my IP due to, say, too many failed connection attemps: I've FLUSH HOSTS on the database, and also I tried to connect using many different source IP addresses, even from all around the world through a VPN proxy service. What could I be missing? I'm asking here because it's been about 36 hours since I've posted on AWS forums but got no answer at all over there... someone here might have a solution! Any input is really appreciated, I'm out of ideas. Thanks!

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• Windows 7 does not detect my new hard drive?

  - by jasondavis

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

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• Windows won't boot after moving house. How do I solve this?

  - by James

  Ive just moved house and tried to set up my desktop after packing it away and now when I power it on, the BIOS boots up and no errors are found but when my computer tires to boot into Windows 7 a continuous fast beeping sound is made and a black screen is displayed. What I've done so far: Reset to UEFI defauts Played about with RAM, I had 4*4 GB sticks, I took all of them out to test for a mobo error which I have and now im only using 1 stick of 4 GB. Changed my GPU, I tok my gtx580 out and now im using the onboard Intel 3000 graphics driver, the BIOS and uefi are correctly displaying so I no longer think its a GPU based error. Ive check all of the connections and nothing seems to be loose. My HDD setup is: 2 128 GB SSD's in Raid 0 as my main C drive (possibly cause of error?) 1 1 TB Games drive 1 2 TB Data Drive Ive also got a blueray drive connected. After searching the internet im pretty much out of suggestions but im currently downloading a live CD to see if it will boot and if I can access some files on my HDD.

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• Enabling http access on port 80 for centos 6.3 from console

  - by Hugo

  Have a centos 6.3 box running on Parallels and I'm trying to open port 80 to be accesible from outside tried the gui solution from this post and it works, but I need to get it done from a script. Tried to do this: sudo /sbin/iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT sudo /sbin/iptables-save sudo /sbin/service iptables restart This creates exactly the same iptables entries as the GUI tool except it does not work: $ telnet xx.xxx.xx.xx 80 Trying xx.xxx.xx.xx... telnet: connect to address xx.xxx.xx.xx: Connection refused telnet: Unable to connect to remote host UPDATE: $ netstat -ntlp (No info could be read for "-p": geteuid()=500 but you should be root.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:37439 0.0.0.0:* LISTEN - tcp 0 0 :::111 :::* LISTEN - tcp 0 0 :::22 :::* LISTEN - tcp 0 0 ::1:631 :::* LISTEN - tcp 0 0 :::60472 :::* LISTEN - $ sudo cat /etc/sysconfig/iptables # Generated by iptables-save v1.4.7 on Wed Dec 12 18:04:25 2012 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [5:640] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Wed Dec 12 18:04:25 2012

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• HTTPS Proxy which answers CONNECT with own certificate

  - by user1109542

  I'm configuring a DMZ which has the following Scheme: Internet - Server A - Security Appliance - Server B - Intranet In this DMZ I need a Proxy server for http(s) connections from the Intranet to Internet. The Problem is, that all Traffic should be scanned by the Security Appliance. For this I have to terminate the SSL Connection at Server B, proxy it as plain http to Server A through the Security Appliance and then further as https into the Internet. An encryption is then persistent between the Client and Server B and the Target Server and Server A. The communication between Server A and Server B is unencrypted. I know about the security risks and that the client will see some warning about the unknown CA of Server B's certificate. As Software I want to use Apache Web Servers on Server A and Server B. As first step I tried to configure Server B that it serves as endpoint for the SSL Encryption. So it has to establish the encryption with the client (answering HTTP CONNECT). Listen 8443 <VirtualHost *:8443> ProxyRequests On ProxyPreserveHost On AllowCONNECT 443 # SSL ErrorLog logs/ssl_error_log TransferLog logs/ssl_access_log LogLevel debug SSLProxyEngine on SSLProxyMachineCertificateFile /etc/pki/tls/certs/localhost_private_public.crt <Proxy *> Order deny,allow Deny from all Allow from 192.168.0.0/22 </Proxy> </VirtualHost> With this Proxy only the CONNECT request is passed through and an encrypted Connection between the client and the target is established. Unfortunately there is no possibility to configure mod_proxy_connect to decrypt the SSL connection. Is there any possibility to accomplish that kind of proxying with Apache?

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• Remote Desktop Services Licensing - Does server have to have a RDS role?

  - by transistor1

  I recently set up a "micro" size Windows 2008 Datacenter server on Amazon AWS. My small group needs several concurrent RDS users to be able to access the machine. Without installing the "Remote Desktop Server" role, it allows 2 concurrent connections. I read on MS' website that in order to set up multiple users, we needed to install the RDS role. I did so, but now the application we are trying to share is running much slower than it was before. Prior to the role installation, it was taking about 5 seconds to open; now it is taking a few minutes to open -- without any other users logged on except me. My assumption is that the RDS role may be too much for this micro instance to handle, and currently, changing to another size instance is not an option (it may be possible later if we were to receive enough funding). This leads me to the following questions: 1) Is it a sensible assessment to assume that it is the RDS role is slowing things down, or are there other things that I could look at to speed it up? We are talking about a machine with ~600MB of memory. 2) If I revert back to the pre-RDS role, is there any legitimate way (in terms of purchasing RDS licenses) to get more than 2 concurrent desktops? I did read this, and am not questioning that the answerer is knowlegeable; but someone else may have some other experience. I am also making it clear that we want to do this in a legitimate way. Thanks in advance for any assistance that can be provided! EDIT: if it is helpful in answering the question, the application in question is a Lotus Approach database. Also, I am asking this from a technical perspective: not a legal one. I want to know if it is possible to install valid licenses without the RDS role.

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• glassfish timeout

  - by Stefano

  Environment: Windows 2008 Server Edition Netbeans 6.7.1 Glassfish 2.1 Apache 2.2.15 for win32 Original problem (almost fixed): The HTTP/1.1 GET method to send data fails if I wait for more than 30 seconds. What I did: I added to the http.conf file of Apache these lines: # # Timeout: The number of seconds before receives and sends time out. # Timeout 9000 # # KeepAlive: Whether or not to allow persistent connections (more than # one request per connection). Set to "Off" to deactivate. # KeepAlive On I went to the Glassfish panel (localhost:4848) and in Configuration HTTP services and I put: Timeout request: 9000 seconds (it was 30) Standby time: -1 (it was 30 seconds) Problem: I am not able to put for glassfish a timeout bigger than 2 minutes to send a GET method. I found this article about glassfish settings, but i'm not able to find WHERE I should put those parameters, and if they could work. Can anybody help try to set this timeout to a higher limit? Maybe it's even a different setting? New tried solution: I went to the glassfish panel control, and to Configuration Subprocesses "Thread-pool-name" and changed the idle timeout from 120 seconds to 1200 seconds. Then I restarted the glassfish service (both from the administrative tools and from asadmin), but still it waits 120 seconds to go idle. I even tried restarting the whole server, still no results. Maybe some setting in postgres? Or the connection of netbeans to postgres through glassfish?

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• Setting up a home network

  - by Mat Richardson

  I'm trying to get my head around how to do this with the equipment I have. Here's how it is.. I have an old laptop that has server 2003 installed on it. This has no wireless NIC, but I have a spare wireless router that I can wire to it. We have a virgin wireless router which provides the home with internet access. What I would like to do it make resources on the server 2003 machine available to the rest of the devices in the home - specifically a couple of laptops running windows 7. Ideally I'd like to be able to use the laptop as a fileserver but maybe also offer application virtualization. In the first instance however, I'd like to create a file server with the laptop and allow connections to it by the other machines. Virtualisation is just a 'nice to have'... Given the hardware I have is this possible? Can you point me in the right direction how to do what I want if this is the case?

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