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• Windows SBS 2003 DNS taking over network

  - by Simon

  I have Windows Small Business Server 2003 premium edition on my new server box, this hosts a webapp on IIS. It has set up a DNS Server to solve requests to the webapp. I have a linux server/router that has does DNAT and portforwards port 80 to the new box. My linux router serves as a firewall and dhcp When i plug the SBS2003 server to the network, it leaves everyone on my network without web browsing, it looks like the DNS requests are going to the new server. I configured the DNS forwarders on SBS2003 to my ISP dns but it doesnt work... Is there something i am missing?

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• Preventing out of office storms Exchange 2010, OWA and Auto Forward to a group

  - by Simon McLaren

  In my organization we have a group mailbox for a particular function. The actual function is preformed by 15 - 20 individuals on a rotating basis. The group mailbox serves as a record for all e-mail sent to that function. Individual access to the mailbox is established by adding a user to an A/D group. For convenience, those members of the group would prefer to not have to "check" this group/non-entiyy mailbox. To achieve that, I want to forward all incoming mail to the group mailbox to that group. So far I am not seeing any consistency in the way an out of office response looks in order to build an exception to the forward rule. We have not turned this feature on for the group, instead waiting until we are sure this will not be an issue. How do I preventing out of office replies to the group mailbox from being forwarded to the group? Management of the mailbox is conducted via OWA. Exchange 2010

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• Installing Ubuntu Server fails to detect NIC

  - by Simon

  O/S: Ubuntu 8.04 Server LTS 64-bit Motherboard: Supermicro x8ste NIC: dual onboard Installation fails, complaining that no Network Interface could be found.

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• Traffic Shaping using tc

  - by Simon

  Hi guys, I have a 1.5 Mbit/s link that i want to share with 150 users. My setup is the following: Linux box with 3 NICs eth0 - public ip eth1 - subnet A - 50 users (static ips) eth2 - subnet B - 100 users (via dhcp) I am using squid as a transparent proxy on port 3128. dhcp server using ports 67 and 68. I was creating, but I think packets are not going to the right queues #!/bin/bash DEV=eth0 RATE_MAIN=2048kbit CEIL_MAIN=2048kbit BURST=1b CBURST=1b RATE_DEFAULT=1024kbit CEIL_DEFAULT=$CEIL_MAIN PRIO_DEFAULT=3 RATE_P2P=1024Kbit CEIL_P2P=$CEIL_MAIN PRIO_P2P=4 RATE_IND=32kbit CEIL_IND=$CEIL_DEFAULT tc qdisc del dev $DEV root tc qdisc add dev $DEV root handle 1: htb default 30 tc class add dev $DEV parent 1: classid 1:1 htb rate $RATE_MAIN ceil $CEIL_MAIN tc class add dev $DEV parent 1:1 classid 1:10 htb rate $RATE_DEFAULT ceil $CEIL_MAIN burst $BURST cburst $CBURST prio $PRIO_WEB ## some other sub class for p2p other traffic tc class add dev $DEV parent 1:1 classid 1:20 htb rate $RATE_P2P ceil $CEIL_P2P burst $BURST cburst $CBURST prio $PRIO_P2P $IPS_NET1=50 $IPS_NET2=100 let $IPS=$IPS_NET1+$IPS_NET2 for ((i=1; i<= $IPS; i++)) do let CLASSID=($i+100) let HANDLE=($i+100) tc class add dev $DEV parent 1:10 classid 1:$CLASSID htb rate $RATE_IND ceil $CEIL_IND tc qdisc add dev $DEV parent 1:$CLASSID handle $HANDLE: sfq perturb 10 done ## Generate IP addresses ## IP_ADDRESSES="" # Subnet A BASE_IP=10.10.10. for ((i=2; i<=$IPS_NET1+1; i++)) do TEMP="$BASE_IP$i" IP=ADDRESSES="$IP_ADDRESSES $TEMP" done # Subnet B BASE_IP=192.168.0. for ((i=2; i<=$IPS_NET2+1; i++)) do TEMP="$BASE_IP$i" IP_ADDRESSES="$IP_ADDRESSES $TEMP" done ## FILTERS ## j=1 U32="tc filter add dev $DEV protocol ip parent 1:0 prio $PRIO_DEFAULT u32" for NET in $IP_ADDRESSES; do let CLASSID=($j+100) $U32_DEFAULT match ip src $NET/32 flowid 1:$CLASSID $U32_DEFAULT match ip dst $NET/32 flowid 1:$CLASSID let j=j+1 done Can you guys help me figure out what's wrong with it? basically I want my classes to be 1:1 (1.5 Mbit ) 1:10 (1024 Kbit) 1:20 (1024 Kbit) (200 ips each with 32 kbit)

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• Practical differences between OpenBSD and FreeBSD?

  - by simon

  I have OpenBSD installed as a router/firewall, and have been thinking about trying either OpenBSD or FreeBSD out as a desktop system, as well. What kind of practical differences (not philosophical, like "OpenBSD's focus is security" [those are well explained at wikipedia ) are there between FreeBSD and OpenBSD? E.g. default shell, different commands or ways of configuring things etc.?

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• What Raid should I use for Website Static Files / Content

  - by Simon

  I'm building a Web server (IIS7) and would like to know the best practice for storing static content and the uploaded files of website's users (predominantly pictures, but also other documents like pdf's). I will keep the operating System on a Raid 1 array. Where should I be keeping the actual website's pages & files, it's own static content, and that of it's users? Should I be placing this content on a seperate raid array, and if so which type? I was considering using SLC SSD's (Such as the Intel's X25-e) but the following issues came to light. Will the SLC SSD's give any improvement over a 2.5" 15k SAS Drive for this type of content? If I did use SSD's, I'm under the belief I would still need to use Raid for redundancy, yet I've heard Intel X25-e's don't support TRIM. Does this scrap them as a legitimate option?

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• Tweaking Firefox for Performance

  - by Simon Sheehan

  As an avid Firefox user since it began, I've been looking to make some under the hood changes to it, in order to optimize it for speed and performance. I'd also like to limit my RAM usage with it. Are there any settings that can help this? What can be changed in about:config that affects this? I'd also like to know if themes or anything really boost RAM usage, as they are generally very small files to download. Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:7.0a1) Gecko/20110630 Firefox/7.0a1

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• Can thunderbird with -no-remote launch firefox without it?

  - by Simon

  We have two thunderbird profiles, and we launch thunderbird using -no-remote as follows: thunderbird -no-remote -P Profile1 and thunderbird -no-remote -P Profile2 unfortunately, this means that if either of us click on a link in an email, and firefox is already running, we get a warning message telling us that firefox is already running, rather than having it open the link. Is it possible for thunderbird to use firefox's remote, even though it has been launched with -no-remote? (if it makes a difference, this is on Xubuntu Karmic)

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• Is there any way for ME to improve routing to an overseas server?

  - by Simon Hartcher

  I am trying to make a connection to a gaming server in Asia from Australia, but my ISP routes my connection through the US. Tracing route to worldoftanks-sea.com [116.51.25.54]over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms 192.168.1.1 2 34 ms 42 ms 45 ms 10.20.21.123 3 40 ms 40 ms 43 ms 202.7.173.145 4 51 ms 42 ms 36 ms syd-sot-ken-crt1-ge-6-0-0.tpgi.com.au [202.7.171.121] 5 175 ms 200 ms 195 ms ge5-0-5d0.cir1.seattle7-wa.us.xo.net [216.156.100.37] 6 212 ms 228 ms 229 ms vb2002.rar3.sanjose-ca.us.xo.net [207.88.13.150] 7 205 ms 204 ms 206 ms 207.88.14.226.ptr.us.xo.net [207.88.14.226] 8 207 ms 215 ms 220 ms xe-0.equinix.snjsca04.us.bb.gin.ntt.net [206.223.116.12] 9 198 ms 201 ms 199 ms ae-7.r20.snjsca04.us.bb.gin.ntt.net [129.250.5.52] 10 396 ms 391 ms 395 ms as-6.r20.sngpsi02.sg.bb.gin.ntt.net [129.250.3.89] 11 383 ms 384 ms 383 ms ae-3.r02.sngpsi02.sg.bb.gin.ntt.net [129.250.4.178] 12 364 ms 381 ms 359 ms wotsg1-slave-54.worldoftanks.sg [116.51.25.54] Trace complete. Since I think it will be unlikely that my ISP will do anything, are there any ways to improve my routing to the server without them having to intervene? NB. The game runs predominately over UDP, so I believe most low ping services are out of the question, as they rely on TCP traffic.

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• Can one have multiple name servers that don't all belong to the same TLD/provider?

  - by Simon

  In light of the GoDaddy outage we updated our name server list for our domain to include an additional name server provider. The list looks something like this: ns61.domaincontrol.com ns54.domaincontrol.com ns1.dreamhost.com ns2.dreamhost.com Both Godaddy and Dreamhost have zone entries to handle the A and MX records. The idea is that if one provider goes out the other will be a fall-back. However, when I tested my config with http://www.intodns.com/ I am getting a warning about SOA serials not being agreed. Have I misunderstood some fundamentals in name-server config? What can I do to prevent future problems?

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• What is the unit of size we get from using wmic command on windows

  - by Abhishek Simon

  I use a couple of wmic commands and I was wondering how can a user come to know the the unit of any size related command output? For Instance I use the below 2 commands wmic /node:Abhishek-PC cpu get maxclockspeed,l2cachesize,loadpercentage output: L2CacheSize LoadPercentage MaxClockSpeed 8192 1 1595 8192 1 1595 wmic /node:Abhishek-PC LogicalDisk Where DriveType="3" Get DeviceID,Size,FreeSpace output: DeviceID FreeSpace Size C: 13933780992 73300701184 E: 23688204288 73405558784

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• DNS Server Order Incorrect on Windows 7 via PPTP VPN to Windows 2003 Server

  - by Simon

  Hi there. When I connect a Windows XP laptop via PPTP vpn to our Windows 2003 Server, the DNS Server order is correct: 192.168.8.3 208.67.222.222 208.67.220.220 But when I connect a Windows 7 laptop via PPTP VPN to our Windows 2003 Server, the DNS order is incorrect: 208.67.222.222 208.67.220.220 192.168.8.3 What do I need to do on our Windows 2003 Server to fix this so the when I do a ping, it will work correctly?

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• NTFS: Deny all permissions for all files, except where explicitly added

  - by Simon

  I'm running a sandboxed application as a local user. I now want to deny almost all file system permissions for this user to secure the system, except for a few working folders and some system DLLs (I'll call this set of files & directories X below). The sandbox user is not in any group. So it shouldn't have any permissions, right? Wrong, because all "Authenticated Users" are a member of the local "Users" group, and that group has access to almost everything. I thought about recursively adding deny ACL-entries to all files and directories and remove them manually from X. But this seems excessive. I also thought about removing "Authenticated Users" from the "Users" group. But I'm afraid of unintended side-effects. It's likely that other things rely on this. Is this correct? Are there better ways to do this? How would you limit the filesystem permissions of a (very) non-trustworthy account?

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• Hosts file resetting on Windows 7

  - by Simon

  Recently I've noticed my hosts file resetting itself. D:\Windows\System32\drivers\etc (OS installed on D drive) First time it reset it to the default, and now for the first time its completely disappeared after installing a whole bunch of updates. I don't have any virus protection other than Microsoft's Security Essentials. What's going on???

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• Permission denied accessing windows firewall

  - by Simon Sabin

  It doesn't matter who I am logged in as I am getting the following error in the mmc console when I launch the firewall advanced settings There was an error opening the Windows Firewall with Advanced Security snap in You do not have the correct permissions to open the Windows Firewall with Advanced Security console, You must be a member of the Administrators group or the Network Operators group to perform this task. For more information, contact your system administrator. Error code: 0x5. Ive tried processmonitor to identify what permission is being denied but no luck. If I run netsh directly I get access denied as well. This is running windows server 2008 SP2. And yes I was running as an administrator. Any ideas?

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• Changing the cell range of conditional formatting in LibreOffice Calc

  - by Simon Lundberg

  Is there any way of changing the range of conditional formatting in LibreOffice Calc (version 3.6)? I have a set applied already to a range of cells, but there is no obvious way of changing which cells a given set of conditional formatting is applied to. I either have to copy and paste the formatting, which results in multiple entries in the conditional formatting (which makes it difficult to manage), or delete the entire thing and create a new one every single time I want to change the range of cells. Is there a better way? link to screenshot

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• Running windows 7 on a Mac Pro

  - by Simon

  My question is simple is running windows 7 on a mac pro as the dominat OS a bad idea? im interested in starting some mac programing but still want to do windows based coding. im tossing up between a macbook pro + a desktop or just a Mac pro. Also what development tools are available for mac?

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• What does the -P option do to mount?

  - by Simon

  I'm migrating from an archaic version of Red Hat to Ubuntu 9. When going through my old nfs mount script, I found that it contained the -P option. So my script looks like: sudo mount -t nfs -o -P ... It looks like the -P is one of the -o options. My question is: what does the -P option do? I've searched every man page I can find, with no luck. Could it have to do with privileged ports?

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• EXCEL generate a character in one column of a row, only if other columns in the same row are not bl

  - by Simon

  My speadsheet keeps track of when patients leave a specific floor of the hospital. There are columns in which where each patient goes is documented (1 column for "home", another column for "rehab facility", another for "other floor", etc.). Only when the patient leaves the hospital altogether does it count as a discharge, in which case the “discharge” column needs to have something in it. What formula can I use to generate, say, an "x" in the "discharge" column if certain "where they went" columns in the same row contain something, but not if there is nothing in any of them? Currently, to accomplish this I am using =IF(OR(M30,N30,O30,P30,Q30,R30,S30),"x") in row 3 of the "discharge" column (rows 1 and 2 are headings), and I have used "fill down" in all subsequent rows. To suppress the "FALSE" this formula yields when the condition is not true, I have applied conditonal formatting to the entire column that if the value=FALSE then the font is white (same colour as background). Is there a more efficient, elegant and idiot-proof way of doing this? The conditional formatting of text colour could potentially confuse everyone but the person who built the spreadsheet (me).

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• Forcing smtp outgoing mail encryption on postfix

  - by Simon

  Hi all, anyone knows how to tell postfix to encrypt outgoing mail? I have configured it to use encryption on reception, but I´m unnable to do it with the out mail. This is my main.cf file: smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = smtpd transport_maps = hash:/etc/postfix/transport # tls config smtp_use_tls = yes smtpd_use_tls = yes smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/postfix/ssl/smtpd.pem smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.pem smtpd_tls_CAfile = /etc/postfix/ssl/smtpd.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom Thanks in advance!

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• Forcing smtp outgoing mail encryption on postfix

  - by Simon

  Hi all, anyone knows how to tell postfix to encrypt outgoing mail? I have configured it to use encryption on reception, but I´m unnable to do it with the out mail. This is my main.cf file: smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = smtpd transport_maps = hash:/etc/postfix/transport # tls config smtp_use_tls = yes smtpd_use_tls = yes smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/postfix/ssl/smtpd.pem smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.pem smtpd_tls_CAfile = /etc/postfix/ssl/smtpd.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom Thanks in advance!

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• ReadyNAS running slow

  - by Simon Callan

  We have a NetGear ReadyNAS NV+ that we are using just for filestorage. While it appears to be running normally as a fileserver, the admin functions run incredibly slow. Sometimes, backups take so long that they don't finish before the next run is due to start, and if I try to look at the backup logs or download the system logs, all I get is the busy "whirling wheel", until I get a "System is busy message". Is this just the system being bolshy, or is it a sign of problems to come, and what can I do to diagnose them?

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• USB 3.0 not functioning fully

  - by Simon Sheehan

  After installing GNU/Linux today onto my Lenovo Y570 laptop, I ran into an issue quickly - the USB 3.0 support. 2/3 of my USB ports are 3.0 so I kind of need them. The ports are powered at the very least - my phone is charging from one, however, plugging in external drives, USB drives, or even a mouse gives no response. The drives spin up, etc, but they do nothing more than that. So there is power, but no information flowing to them. What am I missing here? What can I try to enable to make things work?

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• Can a hardware firewall block a server accessing its OWN UNC shares?

  - by Simon

  I need to set up a UNC share for my hosted dedicated server to access a share on itself. Unfortunately TFS requires a UNC share. I am on a Windows Server 2008 Standard SP2 64bit dedicated server behind a PIX 501 firewall hosted with GoDaddy. I just cannot get the server to access itself and get this error: Windows cannot access \\SERVER\SHARE Check the spelling of the name.. etc. I've found numerous questions about this but no answer to my problem. Server 2008 Standard x64 SP2 Workgroup - not domain Windows Firewall is off Computer browser service is on I am trying to access \\MYMACHINE\TFS-BUILDS by typing in - or double clicking. Neither works. Machine has single network card Filesharing wizard says share was ok Share was showing under 'Computer management' Permissions are set to 'everyone' full control No obvious errors in eventlog Reboot didn't fix it Unfortunately I cannot try to access other shares in or out of this machine because it is a hosted dedicated server and the only machine behind a hardware firewall. The only thing left i can think of is that the hardware firewall needs to be configured. Is this possible? Does 'UNC traffic' go out of the machine and then back in again?

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• File downloaded from IIS6/Win2003 server to a Mac (and not PCs) is incredibly slow

  - by Simon Swords

  We have a test zip file on our customers server that we host for him that when downloading to a Mac is incredibly slow. On a Mac - trying the download via Safari 5.0.3 and Chrome 8.0.552.231 results in a quick burst of normal download speed then plummets to almost no speed at all after 1 or 2 meg (between 1 and 5 Kb/s - yes, KiloBITS per second! According to the network monitor). Downloading via Windows was fine and speedy. Tested via; IE7 7.0.5730.13 and Chrome Portable 8.0.552.224 On Windows XP Pro, and; IE8 8.0.7600.16385 in a Windows 7 virtual machine running via VirtualBox 4.0.0 r69151 on the same Mac mention above Google hasn't helped us out on this occasion, possibly because the search terms I'm having to use are quite generic. Has anybody ever experienced this and if so how do we fix it? Thanks in advance

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