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• Can't find created directory on zfs

  - by maniat1k

  I'm using openSUSE 13.1. I created a new directory on a zpool zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off but I'm not looking on that... So I do it again but I'm getting... zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off cannot create 'zpgd0/iSCSI': dataset already exists adding some data zpool history History for 'zpgd0': 2014-08-11.13:38:21 zpool create -f zpgd0 raidz2 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0490461 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0603473 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0606817 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0670246 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0673599 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0715212 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0722699 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0731193 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0732862 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0806663 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0807385 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0816943 2014-08-11.14:13:09 zpool set autoexpand=on zpgd0 2014-08-11.14:14:32 zfs create zpgd0/espacio 2014-08-19.11:47:47 zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off zpool status -v pool: zpgd0 state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM zpgd0 ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0490461 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0603473 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0606817 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0670246 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0673599 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0715212 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0722699 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0731193 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0732862 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0806663 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0807385 ONLINE 0 0 0 scsi-SATA_WDC_WD4001FAEX-0_WD-WMC1F0816943 ONLINE 0 0 0 errors: No known data errors I have no errors but the folder does not appear, so what Can I do? sorry add it zfs list NAME USED AVAIL REFER MOUNTPOINT zpgd0 933K 35,5T 54,7K /zpgd0 zpgd0/iSCSI 54,7K 35,5T 54,7K /zpgd0/iSCSI

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• Allow access from outside network with dmz and iptables

  - by Ivan

  I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns to my home network so I could be access my server from the internet, and also I installed CCTV camera and I would like to enable watching it from internet. The problem is I cannot access it from outside the net. I already set DMZ in my modem to my router ip. My first guess is because i'm using iptables to redirect all inside network to use squid. And not allow from outside traffic to my inside network. Here is my iptables script: #!/bin/sh # squid server IP SQUID_SERVER="192.168.5.1" # Interface connected to Internet INTERNET="eth0" # Interface connected to LAN LAN_IN="eth1" # Squid port SQUID_PORT="3128" # Clean old firewall iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X # Load IPTABLES modules for NAT and IP conntrack support modprobe ip_conntrack modprobe ip_conntrack_ftp # For win xp ftp client #modprobe ip_nat_ftp echo 1 > /proc/sys/net/ipv4/ip_forward # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPUT ACCEPT # Unlimited access to loop back iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT # Allow UDP, DNS and Passive FTP iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j ACCEPT # set this system as a router for Rest of LAN iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT # unlimited access to LAN iptables -A INPUT -i $LAN_IN -j ACCEPT iptables -A OUTPUT -o $LAN_IN -j ACCEPT # DNAT port 80 request comming from LAN systems to squid 3128 ($SQUID_PORT) aka transparent proxy iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j DNAT --to $SQUID_SERVER:$SQUID_PORT # if it is same system iptables -t nat -A PREROUTING -i $INTERNET -p tcp --dport 80 -j REDIRECT --to-port $SQUID_PORT # DROP everything and Log it iptables -A INPUT -j LOG iptables -A INPUT -j DROP If you know where did I miss, please advice me. Thanks for all your help and I really appreciate it.

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• Having trouble setting up my router

  - by indyK1ng

  I just moved into my apartment and the Internet connection is working. It's Comcast in case that matters. Anyway, I'm having trouble setting up my wireless router (Netgear WNR2000) to work with it. Are there any settings that I could be missing? I currently have it set up to use a static IP address and I found the DNS servers I'm supposed to use and the Internet light is green, but I can't get out to the Internet. When I am trying, I'm connecting to an Ethernet port on the back of my router. Is there a setting I'm missing or a setting that I have set wrong? I used the automatic set up wizard to learn that it's a static IP address. Any help would be appreciated. I am currently only able to use my Linux machine, so please make any help in Linux commands. Yes, I can connect to the Internet if I connect to the modem directly and I've been using the web interface when I'm connected to the router, so I suppose I can ping the router. My router detected the connection as using a static IP address, so I connected to the modem directly and figured out what my IP address, gateway, and mask were as well as DNS servers.

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• Duplicity on a ReadyNAS

  - by Jason Swett

  Has anyone here run Duplicity on a ReadyNAS? I'm trying but here's what I get: duplicity full --encrypt-key="ABC123" /home/jason/ scp://[email protected]//gob Invalid SSH password Running 'sftp -oServerAliveInterval=15 -oServerAliveCountMax=2 [email protected]' failed (attempt #1) I've also found this post that says the "Invalid SSH password" message doesn't actually mean invalid SSH password. This would make sense because I'm not using an SSH password; I'm using a public key. I can ssh, ftp, sftp and rsync into my ReadyNAS just fine. (Actually, to be more accurate, I can get past authentication with ssh, ftp and sftp but I can't actually do anything past that. Regardless, that's enough to tell me that "Invalid SSH password" is bogus. Rsync works with no problems.) The post I found says the command will work as soon as the directory at the end of your scp command exists, but I don't know how to check for that. I know the share gob exists on my ReadyNAS and I know it's writable because I'm writing to it with rsync. Also, here is the verbose output: Using archive dir: /home/jason/.cache/duplicity/3bdd353b29468311ffa8485160da6873 Using backup name: 3bdd353b29468311ffa8485160da6873 Import of duplicity.backends.rsyncbackend Succeeded Import of duplicity.backends.sshbackend Succeeded Import of duplicity.backends.localbackend Succeeded Import of duplicity.backends.botobackend Succeeded Import of duplicity.backends.cloudfilesbackend Succeeded Import of duplicity.backends.giobackend Succeeded Import of duplicity.backends.hsibackend Succeeded Import of duplicity.backends.imapbackend Succeeded Import of duplicity.backends.ftpbackend Succeeded Import of duplicity.backends.webdavbackend Succeeded Import of duplicity.backends.tahoebackend Succeeded Main action: full ================================================================================ duplicity 0.6.10 (September 19, 2010) Args: /usr/bin/duplicity full --encrypt-key=ABC123 -v9 /home/jason/ scp://[email protected]//gob Linux gob 2.6.35-22-generic #33-Ubuntu SMP Sun Sep 19 20:34:50 UTC 2010 i686 /usr/bin/python 2.6.6 (r266:84292, Sep 15 2010, 15:52:39) [GCC 4.4.5] ================================================================================ Using temporary directory /tmp/duplicity-cridGi-tempdir Registering (mkstemp) temporary file /tmp/duplicity-cridGi-tempdir/mkstemp-ztuF5P-1 Temp has 86334349312 available, backup will use approx 34078720. Running 'sftp -oServerAliveInterval=15 -oServerAliveCountMax=2 [email protected]' (attempt #1) State = sftp, Before = '[email protected]'s' State = sftp, Before = '' Invalid SSH password Running 'sftp -oServerAliveInterval=15 -oServerAliveCountMax=2 [email protected]' failed (attempt #1) Any ideas as to what's going wrong?

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• Improving abysmal 802.11n wireless network

  - by concept

  I am in desperate need of help to improve the abysmal performance of my 802.11n wireless network. At best I get 30Mbs (this is an internet download) from a technology that boasts 300Mbs, even worse is the LAN where to date best i have ever gotten is 1Mbs. It is literally quicker to copy the file to a USB and walk it to the other computer. Infrastructure is this AP 802.11n only broadcasting at both 2.4GHz and 5GHz Mac with 802.11a/b/g/n card is connected to the AP via 5GHz Linux with 802.11a/b/g/n card is connected to AP via 2.4GHz I have conducted the following tests (results at end of post) Internet based speed test wired and wireless LAN file copy wired and wireless I have read: http://nutsaboutnets.com/troubleshooting-wi-fi-problems/ http://www.smallnetbuilder.com/wireless/wireless-basics/30664-5-ways-to-fix-slow-80211n-- speed http colon //www.wi-fiplanet dot com/tutorials/7-tips-to-increase-wi-fi-performance.html Slow file transfer on network between two 802.11n laptops (connected directly together via access point) Wireless Network Performance Issues Slower than expected 802.11n wireless network speeds I have made the following optimizations AP broadcasts only 802.11n on both 2.4GHz and 5GHz frequencies 2.4GHz is on a channel with least interference (live in an apartment with lots of APs), this did make a 10Mb/sec improvement Our AP is the only one transmitting on the 5GHz freq. Security: WPA Personal WPA2 AES encryption Bandwidth: 20MHz / 40MHz (i assume this to be channel bonding) I have tried the following with 0 improvement Dropped the Fragment Threshold to 512 Dropped the Request To Send (RTS) Threshold to 512 and 1 Even thought of buying a frequency spectrum analyzer, until i saw the cost of them!!! Speed test results Linux Wired: DOWNLOAD 128.40Mb/s UPLOAD 10.62Mb/s www dot speedtest dot net/my-result/2948381853 Mac Wired: DOWNLOAD 118.02Mb/s UPLOAD 10.56Mb/s www dot speedtest dot net/my-result/2948384406 Linux Wireless: DOWNLOAD 23.99Mb/s UPLOAD 10.31Mb/s www.speedtest dot net/my-result/2948394990 Mac Wireless: DOWNLOAD 22.55Mb/s UPLOAD 10.36Mb/s www.speedtest dot net/my-result/2948396489 LAN NFS 53,345,087 bytes (51Mb) file Linux Mac NFS Wired: 65.6959 Mb/sec Linux Mac NFS Wireless: .9443 Mb/sec All help is appreciated, even testing methods will be accepted.

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• ProCurve 1800 switch issue

  - by user98651

  I recently deployed ProCurve 1800-24G switches in place of some older ProCurve 2424M switches in my network. However, I'm having a serious problem with the switch connected to the router. It seems, every night when our Windows 2008 R2 server (off site) runs a backup to a iSCSI target (on site) [facilitated through a PPTP tunnel] the LAN loses connectivity with the router. To clarify, there is only one router which is connected to the switch affected by this problem. The only way to resolve the issue is to either reboot the router or pull the ethernet cable that goes to the router and plug it back in. During the outage, clients cannot receive DHCP requests, DNS requests, ping, or do anything else with the router in this state. Now, neither the switch or router are configured extensively and the issue only seems to have surfaced with the new switch in place. I have tried a number of things including replacing cables, rebooting and checking the switch configuration (it is literally as basic as you can get at this point-- flat LAN, no trunking). Interestingly, the router shows (accessed externally) no changes in configuration or status during this state but similarly cannot ping or access other hosts on the network. This issue occurs in different stages of backup (ie, different amounts transferred). I've also dumped packets from the switch into WireShark but cannot seem to find any anomaly yet (I'm looking at packets around the time the issue appeared and at the time when I reset the NIC). Any suggestions for what to look for? Ideas on what could be causing this? I'm seeing some transmit/receive errors on the NIC from both the router and switch side but nothing serious when compared to the total packet counts. I'm seriously doubting hardware at this point, as I have tried another switch, different cables, and a different NIC on the router.

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• How do I determine whether this email bounce is my fault?

  - by David Zaslavsky

  I use Google Apps to handle email for my personal website, so I have an email address [email protected] through that, and I also have a Gmail account [email protected]. Now, I've been trying to send emails to a particular recipient who shall be known as [email protected]. When I send the email from my Gmail account with the @gmail.com address, it works fine. However, when I send it from my Google Apps account with the @ellipsix.net address, I get a bounce message which includes the following text: Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 mail server permanently rejected message (#5.3.0) (state 17). The bounce message suggests that it is up to the mail administrator of the recipient domain example.com to fix the problem, whatever it is. But I would like to be as sure as possible that nothing needs to be fixed on my end. I already have DKIM signatures enabled for my domain, and I have published an SPF DNS record. Is there something else I should check or do, or can I be confident that it's up to the recipient to fix this issue? Does the "state 17" in the bounce message mean something relevant? I've included my domain name in the question so people who know more than me about this stuff can independently check the relevant DNS records or other information. This other question seems similar, but I've already investigated everything suggested in the answers there (except for contacting Google, which I don't want to do unless I suspect it's their issue to fix).

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• Can access SSH but can't access cPanel web server

  - by Tom

  I've built a Cent OS 6.0 vps and then i've installed the latest cPanel/WHM. This isn't my first installation but i've noticed something weird especially that i've never used the 6.0 version.. when i tried to install cPanel, it didn't recognize wget so installed it, then cPanel said that Perl isn't installed, i've installed that and the installation went well since then. Now, when i've tried to access the server via the browser with the IP Adress as i've used to, it didn't work, it was just loading forever, i tried the 2087 port, still the same. but SSH works. I've also tried the commands to start the server manually but none of them worked. How to fix that? Edit: iptables -nL Result root@server [~]# iptables -nL Chain INPUT (policy ACCEPT) target prot opt source destination acctboth all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain FORWARD (policy ACCEPT) target prot opt source destination REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain OUTPUT (policy ACCEPT) target prot opt source destination acctboth all -- 0.0.0.0/0 0.0.0.0/0 Chain acctboth (2 references) target prot opt source destination tcp -- 216.119.149.168 0.0.0.0/0 tcp dpt:80 tcp -- 0.0.0.0/0 216.119.149.168 tcp spt:80 tcp -- 216.119.149.168 0.0.0.0/0 tcp dpt:25 tcp -- 0.0.0.0/0 216.119.149.168 tcp spt:25 tcp -- 216.119.149.168 0.0.0.0/0 tcp dpt:110 tcp -- 0.0.0.0/0 216.119.149.168 tcp spt:110 icmp -- 216.119.149.168 0.0.0.0/0 icmp -- 0.0.0.0/0 216.119.149.168 tcp -- 216.119.149.168 0.0.0.0/0 tcp -- 0.0.0.0/0 216.119.149.168 udp -- 216.119.149.168 0.0.0.0/0 udp -- 0.0.0.0/0 216.119.149.168 all -- 216.119.149.168 0.0.0.0/0 all -- 0.0.0.0/0 216.119.149.168 all -- 0.0.0.0/0 0.0.0.0/0

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

  - by Thr4wn

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

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• Surface (Pro) Soft Keyboard + Hardware Keyboard Issue

  - by Matt Clark

  When I got my Surface Pro 2, I loved it, and everything seemed to work flawlessly, until, wait for it, windows updates... The issue that I am having is the following, I primarily use the TC (TypeCover), as the Pro is an out-of-office laptop replacement for me, that I can still use to do whatever I need, but there are times when I will flip the cover, and use the system in tablet mode. The problem is that even when the TC is attached, any text field I click on, causes the OSK (on screen keyboard) to appear, as if I was running the system in tablet mode. As soon as I press a single button on the TC, the OSK is dismissed. When I first got the system, this was NOT the case, and it functioned as it should, where the OSK will only appear if the TC was not present. The biggest problem that I am having is the fact that the OSK causes the windows to be resized. Maximized windows will be shrunk, and stretched to their previous state, however a window that is not maximized will stay in its shrunken state, after the OSK has been dismissed. Below are pictures that show what is happening. Has anyone else experienced this issue? And is there any way to fix it? As you might imagine, having spent a pretty penny on a device like this, it it quite an annoying bug that needs fixing. I have been dealing with this issue for about 3 months now.

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• LSI MegaRAID LINUX got Optimal after degradation but strange POST message

  - by kesrut

  Linux server box with LSI MegaRAID controller got degraded. But after some time RAID status changed to Optimal. Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name : RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0 Size : 2.727 TB Mirror Data : 2.727 TB State : Optimal Strip Size : 256 KB Number Of Drives per span:2 Span Depth : 3 Default Cache Policy: WriteBack, ReadAdaptive, Cached, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Cached, No Write Cache if Bad BBU Default Access Policy: Read/Write Current Access Policy: Read/Write Disk Cache Policy : Disk's Default Encryption Type : None Is VD Cached: No But now I'm getting RAID BIOS POST message: Your battery is either charging, bad or missing, and you have VDs configured for write-back mode. Because the battery is not currently usable, these VDs willl actually run in write-through mode until the battery is fully charged or replaced if it is bad or missing. (Image: http://cl.ly/image/1h1O093b1i2d) So may it be battery issue caused problem ? I get information about battery: BatteryType: iBBU Voltage: 4001 mV Current: 0 mA Temperature: 22 C Battery State : Operational BBU Firmware Status: Charging Status : None Voltage : OK Temperature : OK Learn Cycle Requested : No Learn Cycle Active : No Learn Cycle Status : OK Learn Cycle Timeout : No I2c Errors Detected : No Battery Pack Missing : No Battery Replacement required : No Remaining Capacity Low : No Periodic Learn Required : No Transparent Learn : No No space to cache offload : No Pack is about to fail & should be replaced : No Cache Offload premium feature required : No Module microcode update required : No Where can be problem ? I'm disabled alarms, but get them if enabled. But don't know how find root of problem.

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• [Ubuntu 10.04] mdadm - Can't get RAID5 Array To Start

  - by Matthew Hodgkins

  Hello, after a power failure my RAID array refuses to start. When I boot I have to sudo mdadm --assemble --force /dev/md0 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1 to get mdadm to notice the array. Here are the details (after I force assemble). sudo mdadm --misc --detail /dev/md0: /dev/md0: Version : 00.90 Creation Time : Sun Apr 25 01:39:25 2010 Raid Level : raid5 Used Dev Size : 1465135872 (1397.26 GiB 1500.30 GB) Raid Devices : 6 Total Devices : 6 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jun 17 23:02:38 2010 State : active, Not Started Active Devices : 6 Working Devices : 6 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 128K UUID : 44a8f730:b9bea6ea:3a28392c:12b22235 (local to host hodge-fs) Events : 0.1249691 Number Major Minor RaidDevice State 0 8 65 0 active sync /dev/sde1 1 8 81 1 active sync /dev/sdf1 2 8 97 2 active sync /dev/sdg1 3 8 49 3 active sync /dev/sdd1 4 8 33 4 active sync /dev/sdc1 5 8 17 5 active sync /dev/sdb1 mdadm.conf: # by default, scan all partitions (/proc/partitions) for MD superblocks. # alternatively, specify devices to scan, using wildcards if desired. DEVICE partitions /dev/sdb1 /dev/sdb1 # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # definitions of existing MD arrays ARRAY /dev/md0 level=raid5 num-devices=6 UUID=44a8f730:b9bea6ea:3a28392c:12b22235 Any help would be appreciated.

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• Internet slowed down because of SQUID Server setup

  - by Ranjith Kumar

  Recently I have setup a squid server for our office. I have computer (A) with two ethernet cards, one for internet and the second one for local networkIt has Ubuntu server OS with squid-server and dhcp3-server installedI have added few iptable rules to work like a router and redirect all http traffic to 3128 port This link is my reference. Everything worked fine for 2 days. All of a sudden internet speed went down drastically. When I connected the internet cable to my laptop to test the internet speed it was fine. Again when I reconnected it back to computer A everything was normal. This happened 4 times in a week. Could anyone here please help me why the internet speed is going down and it becomes normal when I reconnect the cable. EDIT: Rebooting the system (computer A) didn't make a difference. I have changed iptables so that http traffic doesn't redirect to 3128 port any further, still no change in the internet speed. I think the problem is not with squid but with something else. Here are my iptable rules SQUID_SERVER="10.1.1.1" INTERNET="eth1" LAN_IN="eth0" SQUID_PORT="3128" PROXYSERVERS=(Atlanta Baltimore Boston Chicago Dallas Denver Houston KansasCity LosAngeles Miami NewYork Philadelphia Phoenix SanAntonio SanDiego SanJose Seattle Washington) SERVERLEN=${#PROXYSERVERS[*]} I=0 iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X modprobe ip_conntrack modprobe ip_conntrack_ftp echo 1 /proc/sys/net/ipv4/ip_forward iptables -P INPUT DROP iptables -P OUTPUT ACCEPT iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j ACCEPT iptables --table nat --append POSTROUTING --out-interface $INTERNET -j MASQUERADE iptables --append FORWARD --in-interface $LAN_IN -j ACCEPT iptables -A INPUT -i $LAN_IN -j ACCEPT iptables -A OUTPUT -o $LAN_IN -j ACCEPT while [ $I -lt $SERVERLEN ]; do iptables -t nat -A PREROUTING -i $LAN_IN -p tcp -d ${PROXYSERVERS[$I]}.wonderproxy.com --dport 80 -j ACCEPT let I++ done iptables -t nat -A PREROUTING -i $LAN_IN -p tcp --dport 80 -j DNAT --to $SQUID_SERVER:$SQUID_PORT iptables -A INPUT --protocol tcp --dport 80 -j ACCEPT iptables -A INPUT --protocol tcp --dport 443 -j ACCEPT iptables -A INPUT --protocol tcp --dport 22 -j ACCEPT iptables -A INPUT -j LOG iptables -A INPUT -j DROP

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• Tomcat uninstall problems

  - by Deepak

  Hi, I am using "apt-get remove tomcat6" to remove tomcat.It gives this outout and tomcat still running on my system: Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: seamonkey-gnome-support ocaml-base-nox libghc6-hsql-prof libgmp3-dev libffi-dev libtool libghc6-hsql-dev libgmpxx4ldbl ghc6-prof camlp4 ghc6 ledit ocaml-interp rhino libltdl-dev ocaml-nox Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: tomcat6 tomcat6-admin tomcat6-examples 0 upgraded, 0 newly installed, 3 to remove and 1 not upgraded. After this operation, 2,400kB disk space will be freed. Do you want to continue [Y/n]? y Segmentation fault deepak@kalpna-desktop:~$ apt-get remove tomcat6 Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: seamonkey-gnome-support ocaml-base-nox libghc6-hsql-prof libgmp3-dev libffi-dev libtool libghc6-hsql-dev libgmpxx4ldbl ghc6-prof camlp4 ghc6 ledit ocaml-interp rhino libltdl-dev ocaml-nox Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: tomcat6 tomcat6-admin tomcat6-examples 0 upgraded, 0 newly installed, 3 to remove and 1 not upgraded. After this operation, 2,400kB disk space will be freed. Do you want to continue [Y/n]? y Segmentation fault What is the way to re-install tomcat on ubuntu. Regards D

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• Which ports are needed for NTLM (Windows Authentication) to connect to SQL Server?

  - by Adam Bellaire

  I've got SQL server running on a machine which is not in a domain, and which is not operating in mixed mode (it's running with "Windows Authentication"). I'm trying to connect to it from a Linux web server running freetds via TCP/IP, using NTLM to authenticate. The firewall on the SQL server is very restrictive. 1433 is open to my web server, but I'm getting conflicting information from the web on what additional ports (TCP/UDP) are needed for NTLM to succeed. It is currently fail; I can talk on 1433 to request NTLM, but the actual authentication always fails. One source says 137, 138, 139, but those are just the NetBIOS ports. Do I really need those? Another source says 135. Still others seem to say 1434... I can't make heads or tails of it. Dammit Jim, I'm a programmer, not a network administrator! EDIT: The exact error message: Msg 18452, Level 14, State 1, Server , Line 0 Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection. Msg 20002, Level 9, State -1, Server OpenClient, Line -1 Adaptive Server connection failed I am attempting to connect with a remote machine username, i.e. 'servername\username'. Some sources recommend that I set up mirrored accounts on the local and remote machines, but the local machine is running Linux, not IIS under Windows.

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• SQL Server 2008 R2 - Cannot create database snapshot

  - by Chris Diver

  Server: Windows Server 2008 R2 X64 Enterprise SQL: SQL Server 2008 R2 Enterprise X64 I have a default SQL Server instance, the SQL Server service account is running as a domain user. I am trying to create a database snapshot in the directory where the mdf files are stored. The T-SQL syntax is correct. The file system is NTFS. The error message I get is: Msg 1823, Level 16, State 2, Line 1 A database snapshot cannot be created because it failed to start. Msg 5119, Level 16, State 1, Line 1 Cannot make the file "e:\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\TestDB.ss" a sparse file. Make sure the file system supports sparse files. The local SQLServerMSSQLUser$db$MSSQLSERVER group has Full Control permission on the folder where I am trying to create the snapshot. I can fix the problem in two ways, neither of which are suitable. Add the SQL Server service (domain) account to the local Administrators group and restart the SQL service. Grant the local SQLServerMSSQLUser$db$MSSQLSERVER group Full control on E:\ I have tried to change the owner of the DATA directory to SQLServerMSSQLUser$db$MSSQLSERVER to no avail. I have no issue creating a new database Why can I not create a snapshot by giving permission only on the DATA folder? Update 23/09/2010: I have tried mrdenny's suggestion with no luck (but learned something new in the process), I suspect the problem may be due to the fact that the domain is a windows 2000 domain running in mixed mode. I had to install hotfix KB976494 for Server 2008 R2, as the SQL Server 2008 R2 installer would not verify the service account correctly with the domain. I noticed that Server 2000 isn't a supported operating system for SQL 2008 R2 but cannot find anything that would suggest it shouldn't work in a 2000 domain. I dis-joined the test server from the domain and changed the service accounts to the local service account and I still have the same issue. I will try to re-install the server without joining the domain and without the hotfix and see if the issue persists.

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• Squid SSL transparent proxy - SSL_connect:error in SSLv2/v3 read server hello A

  - by larryzhao

  I am trying to setup a SSL proxy for one of my internal servers to visit https://www.googleapis.com using Squid, to make my Rails application on that server to reach googleapis.com via the proxy. I am new to this, so my approach is to setup a SSL transparent proxy with Squid. I build Squid 3.3 on Ubuntu 12.04, generated a pair of ssl key and crt, and configure squid like this: http_port 443 transparent cert=/home/larry/ssl/server.csr key=/home/larry/ssl/server.key And leaves almost all other configurations default. The authorization of the dir that holds key/crt is drwxrwxr-x 2 proxy proxy 4096 Oct 17 15:45 ssl Back on my dev laptop, I put <proxy-server-ip> www.googleapis.com in my /etc/hosts to make the call goes to my proxy server. But when I try it in my rails application, I got: SSL_connect returned=1 errno=0 state=SSLv2/v3 read server hello A: unknown protocol And I also tried with openssl in cli: openssl s_client -state -nbio -connect www.googleapis.com:443 2>&1 | grep "^SSL" SSL_connect:before/connect initialization SSL_connect:SSLv2/v3 write client hello A SSL_connect:error in SSLv2/v3 read server hello A SSL_connect:error in SSLv2/v3 read server hello A Where did I do wrong?

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• Unsigned lenny packages with aptitude safe-upgrade

  - by Liam

  I have several Debian lenny computers. Two have nearly identical sources.list files. On both, I do regular update/safe-upgrades. On one it always goes smoothly. On the other, much of the time I get the following: sudo aptitude safe-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Reading task descriptions... Done The following packages will be upgraded: krb5-clients krb5-ftpd krb5-rsh-server krb5-telnetd krb5-user libimlib2 libkadm55 libkrb53 libpng12-0 libpulse0 xpdf xpdf-common xpdf-reader 13 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 2906kB of archives. After unpacking 36.9kB will be used. Do you want to continue? [Y/n/?] WARNING: untrusted versions of the following packages will be installed! Untrusted packages could compromise your system's security. You should only proceed with the installation if you are certain that this is what you want to do. krb5-rsh-server krb5-user krb5-ftpd krb5-clients libkrb53 xpdf-reader libpng12-0 libkadm55 xpdf libpulse0 libimlib2 krb5-telnetd xpdf-common Do you want to ignore this warning and proceed anyway? To continue, enter "Yes"; to abort, enter "No": no Abort. Needless to say, I don't proceed. What is going on? How do I fix it? These are the non-comment lines in the sources.list for this computer: deb ftp://ftp.debian.org/debian/ lenny main contrib non-free deb-src ftp://ftp.debian.org/debian/ lenny main contrib deb http://security.debian.org/ lenny/updates main contrib non-free Thank you.

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• How to set up Zabbix to monitor SQL Server Failover Active-Passive Cluster?

  - by Sebastian Zaklada

  It should be simple, so it is just most likely my approach being totally off and someone will hopefully prod me into the right direction. We have a Zabbix 2.0.3 server instance set up monitoring a bunch of different servers, but now we need to set it up to monitor and notify any alerts in regards to the SQL Server 2008 R2 Failover Active-Passive cluster. Essentially, this is a 2 servers cluster, when only one of its nodes can be "active" at a given time, serving all SQL Server related requests, while the other server just "sleeps" and from the point of anyone logged on on that server - has all of the SQL Server related services in stopped state. We have tried setting up Zabbix agents on both servers, using SQL Server 2005 templates (we could not find any 2008 specific ones and the 2005 ones always seemed to be working just fine for monitoring 2008 R2 instances) and configuring Zabbix server for both of the servers, but we end up having constant alerts for the server being currently the passive one in the cluster. We have been able to look up various methods of actually monitoring the failover, but we have not been able to find any guidance in regards to how to instruct Zabbix, that in this particular case, only one of the servers in the group is expected to be in the online state, while the other can be just discarded and should not raise any alerts. I hope I made myself clear. Thanks for any guidance. I am out of ideas.

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• How to set up multiple SSIDs with bandwidth limiting on a single wireless router?

  - by Rahul Narain

  I have an Asus WL-520GU wireless router connected to a cable modem that I use for wireless internet access in my apartment. I would like to set it up so that it provides two SSIDs: one secured and password-protected for my regular use, and a "guest" SSID that's unsecured but throttled to, say, 10% of the available bandwidth. What is the most straightforward way to do this? I've been looking into DD-WRT and Tomato, both of which support my router. DD-WRT supports setting up multiple SSIDs using the GUI, but I don't know if it's possible to limit the bandwidth of each SSID independently; point #12 in this FAQ thread says it's not possible to limit by day or by MAC address, which is discouraging but not conclusive. Tomato allows bandwidth limits in its QoS settings, going by the screenshot here, but multiple SSID support is still experimental and it doesn't look like it will work with the encryption settings or bandwidth limits in the GUI. I'd like to know a good way to do this which gives me the fewest opportunities for screwing up. I'm no stranger to the command line, if that turns out to be what's necessary, but if so, please explain what the commands are doing because I don't have a good mental model of what needs to happen to set this up.

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• IPTables configuration for Localhost

  - by Gabe Mc

  I have a problem in connecting a JIRA instance running on a cloud server to an instance of MySQL running on the same box. I have configured it previously using quite a few iptables rules, but it seems overly broad/terribly inprecise. I want access to several of localhosts ports from the local machine, but deny it from all other accounts. Currently, my /etc/iptables.rules file looks like: *filter :INPUT DROP [223:17779] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [10161:1120819] # SSH Access -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT # Apache2 Access for connecting to Tomcat on port 8080 -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT # MySQL -I INPUT -i lo -p tcp -m tcp --dport mysql -j ACCEPT COMMIT However, this doesn't allow me to log in when I try logging in; it just hangs on: #> mysql -u root -p -h 127.0.0.1 The Tomcat servlet container starts throwing all kinds of exceptions, as well. This is a more general problem, as I need to enable things like accessing the shutdown port for the Tomcat container, but I need to at least get the MySQL part ironed out first, without the ugliness I was originally trying. Thanks.

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• Hardware needed to route between two networks over wireless

  - by AptDweller

  I recently rented an apartment about 100 yards from my brother's house. I have line of sight to his house and can pick up his home AP signal with one of my two laptops if I go out on my balcony (facing his house) or put the laptop by the window. The other laptop will sometimes see the SSID broadcast, but fails to connect, drops, etc. We would like to set up a persistent wireless connection between our homes. We would prefer each network be logically segmented as independent networks, but he will share his internet connection. I've got a bunch of tv shows saved to a NAS by my TiVO that I'd like to make available to him across the wireless link. My brother strongly prefers to not mess with his WAP at all. His network is running fine and is afraid to mess it up. I guess you could say he is "technologically declined". If we can get a reliable 11Mbps connection we will be satisfied. What hardware do I need to make this work? I was thinking a router with two wireless interfaces (external antennas) a wired interface, and a directional antenna mounted on my balcony facing his house. Can anyone recommend hardware to make this happen? Cheaper is better. I'll only be living in the area a year or two. I do have an old satellite TV antenna if that can be used to direct the signal.

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• CPU / Affinity mask problem in SQL 2005

  - by Robert Moir

  Hi folks, Having a problem with a SQL Server which was virtualised. The CPU mask was set on the physical host for some reason and now advanced options are not available. So I need to reconfigure the CPU affinity mask settings - which are advanced options, so this is blocked because of the affinity mask issue. I've tried doing this from the SQL server in single user command line mode, I've googled and found lots of people with similar problems but no real solution. I'm stumped. Any ideas? Sample commands and output from query analyser below. sp_configure 'show advanced options', 1 GO RECONFIGURE WITH OVERRIDE GO sp_configure 'affinity mask', 0x00000000 GO RECONFIGURE GO ----------------------------------------- Configuration option 'show advanced options' changed from 0 to 1. Run the RECONFIGURE statement to install. Msg 5832, Level 16, State 1, Line 1 The affinity mask specified does not match the CPU mask on this system. Msg 15123, Level 16, State 1, Procedure sp_configure, Line 51 The configuration option 'affinity mask' does not exist, or it may be an advanced option.

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• Cannot access firewalled jboss server from Internet Explorer

  - by Simon Gibbs

  I've produced a website for a client One Single Menu using JBoss and hosted it on Rackspace Cloud Servers running Ubuntu's Maverick Meerkat. Following advice, I esablished some iptables rule to protect jboss: iptables -I INPUT 1 -i lo -j ACCEPT iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080 iptables -I INPUT -p tcp --dport 8080 -j ACCEPT iptables -t nat -A OUTPUT -o lo -p tcp --dport 80 -j REDIRECT --to-port 8080 iptables -A INPUT -j DROP Now, several versions of IE on several computers on at least two different ISPs cannot access the onesinglemenu.com. Curl from within the datacenter, Firefox, and Safari on the same ISPs can all access the server fine. I even tried IE and Firefox on the same computer and IE failed but Firefox worked. The error behaviour is that IE hangs on connecting without reporting an error, even after a minute or so. No page is displayed at all. I find it quite odd that I'm having a browser specific connection issue, but it appears to be the case. Help!

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• Does visual source safe take .cvsignore as configuration ?

  - by superuser

  An easy way to tell CVS to ignore these directories is to create a file named .cvsignore (note the leading period) in your top-level source directory Has anyone verified this with vss? Plus,does vss have these similar command lines: * To refresh the state of your source code to that stored in the the source repository, go to your project source directory, and execute cvs update -dP. * When you create a new subdirectory in the source code hierarchy, register it in CVS with a command like cvs add {subdirname}. * When you first create a new source code file, navigate to the directory that contains it, and register the new file with a command like cvs add {filename}. * If you no longer need a particular source code file, navigate to the containing directory and remove the file. Then, deregister it in CVS with a command like cvs remove {filename}. * While you are creating, modifying, and deleting source files, changes are not yet reflected in the server repository. To save your changes in their current state, go to the project source directory and execute cvs commit. You will be asked to write a brief description of the changes you have just completed, which will be stored with the new version of any updated source file.

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