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• How to stop a ICMP attack?

  - by cumhur onat

  We are under a heavy icmp flood attack. Tcpdump shows the result below. Altough we have blocked ICMP with iptables tcpdump still prints icmp packets. I've also attached iptables configuration and "top" result. Is there any thing I can do to completely stop icmp packets? [root@server downloads]# tcpdump icmp -v -n -nn tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 03:02:47.810957 IP (tos 0x0, ttl 49, id 16007, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 124, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.811559 IP (tos 0x0, ttl 49, id 16010, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 52, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.811922 IP (tos 0x0, ttl 49, id 16012, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 122, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.812485 IP (tos 0x0, ttl 49, id 16015, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 126, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.812613 IP (tos 0x0, ttl 49, id 16016, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 122, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.812992 IP (tos 0x0, ttl 49, id 16018, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 122, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.813582 IP (tos 0x0, ttl 49, id 16020, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 52, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.814092 IP (tos 0x0, ttl 49, id 16023, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 120, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.814233 IP (tos 0x0, ttl 49, id 16024, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 120, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.815579 IP (tos 0x0, ttl 49, id 16025, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 50, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.815726 IP (tos 0x0, ttl 49, id 16026, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 IP (tos 0x0, ttl 50, id 31864, offset 0, flags [none], proto: ICMP (1), length: 76) 77.92.136.196 > 94.201.175.188: [|icmp] 03:02:47.815890 IP (tos 0x0, ttl 49, id 16027, offset 0, flags [none], proto: ICMP (1), length: 56) 80.227.64.183 > 77.92.136.196: ICMP redirect 94.201.175.188 to host 80.227.64.129, length 36 iptables configuration: [root@server etc]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination ofis tcp -- anywhere anywhere tcp dpt:mysql ofis tcp -- anywhere anywhere tcp dpt:ftp DROP icmp -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination DROP icmp -- anywhere anywhere Chain ofis (2 references) target prot opt source destination ACCEPT all -- OUR_OFFICE_IP anywhere DROP all -- anywhere anywhere top: top - 03:12:19 up 400 days, 15:43, 3 users, load average: 1.49, 1.67, 2.61 Tasks: 751 total, 3 running, 748 sleeping, 0 stopped, 0 zombie Cpu(s): 8.2%us, 1.0%sy, 0.0%ni, 87.9%id, 2.1%wa, 0.1%hi, 0.7%si, 0.0%st Mem: 32949948k total, 26906844k used, 6043104k free, 4707676k buffers Swap: 10223608k total, 0k used, 10223608k free, 14255584k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 36 root 39 19 0 0 0 R 100.8 0.0 17:03.56 ksoftirqd/11 10552 root 15 0 11408 1460 676 R 5.7 0.0 0:00.04 top 7475 lighttpd 15 0 304m 22m 15m S 3.8 0.1 0:05.37 php-cgi 1294 root 10 -5 0 0 0 S 1.9 0.0 380:54.73 kjournald 3574 root 15 0 631m 11m 5464 S 1.9 0.0 0:00.65 node 7766 lighttpd 16 0 302m 19m 14m S 1.9 0.1 0:05.70 php-cgi 10237 postfix 15 0 52572 2216 1692 S 1.9 0.0 0:00.02 scache 1 root 15 0 10372 680 572 S 0.0 0.0 0:07.99 init 2 root RT -5 0 0 0 S 0.0 0.0 0:16.72 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.06 ksoftirqd/0 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 5 root RT -5 0 0 0 S 0.0 0.0 1:10.46 migration/1 6 root 34 19 0 0 0 S 0.0 0.0 0:01.11 ksoftirqd/1 7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1 8 root RT -5 0 0 0 S 0.0 0.0 2:36.15 migration/2 9 root 34 19 0 0 0 S 0.0 0.0 0:00.19 ksoftirqd/2 10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2 11 root RT -5 0 0 0 S 0.0 0.0 3:48.91 migration/3 12 root 34 19 0 0 0 S 0.0 0.0 0:00.20 ksoftirqd/3 13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3 uname -a [root@server etc]# uname -a Linux thisis.oursite.com 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux arp -an [root@server downloads]# arp -an ? (77.92.136.194) at 00:25:90:04:F0:90 [ether] on eth0 ? (192.168.0.2) at 00:25:90:04:F0:91 [ether] on eth1 ? (77.92.136.193) at 00:23:9C:0B:CD:01 [ether] on eth0

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• Debian 7: "Failure of key exchange and association"

  - by pyrogoggles

  I'm installing Debian using the Live CD with GNOME and the non-free packages. The internet works just fine when using the live CD, but when you try to open the installer and select a network, it gives me the error of "Failure of key exchange and association". I've put everything in right, and tried multiple times. However, it never works. Am I just going to have to use ethernet to install? Thanks, people.

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• Backup Xen domU machines while running.

  - by Jonathan Hawkes

  The host machine is running CentOS 5.3 and using LVM to create Logical Volumes (LVs) and to allow live snapshots to be taken of those LVs. My thought was to store all of the image files for the Xen underpriviledged domains (domU) in a single LV and periodically take a snapshot of that LV and copy the disk images out of the snapshot in order to make a live backup of these systems. Is this doable? Is there a better way? Thanks!

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• Nginx / uWsgi / Django site can handle more traffic with rewrite URL

  - by Ludo

  Hi there. I'm running a Django app, using uWsgi behind Nginx. I've been doing some performance tuning and load testing using ApacheBench and have discovered something unexpected which I wonder if someone could explain for me. In my Nginx config I have a rewrite directive which catches lots of different URL permutations and then forwards them to the canonical URL I wish to use, eg, it traps www.mysite.com/whatever, www.mysite.co.uk/whatever and forwards them all to http://mysite.com/whatever. If I load test against any of the URLs listed with a redirect (ie, NOT the canonical URL which it is eventually forwarded to), it can serve 15000 concurrent connections without breaking a sweat. If I load test against the canonical URL, which the above test I would have expected got forwarded to anyway, it can't handle nearly as much. It will drop about 4000 of the 15000 requests, and can only handle about 9000 reliably. This is the command line I'm using to test: ab -c15000 -n15000 http://www.mysite.com/somepath/ and ab -c15000 -n15000 http://mysite.com/somepath/ I've tried several different types - it makes no different which order I do them in. This doesn't make sense to me - I can understand why the requests involving a redirect may not handle quite so many concurrent connections, but it's happening the other way round. Can anyone explain? I'd really prefer it if the canonical URL was the one which could handle more traffic. I'll post my Nginx config below. Thanks loads for any help! server { server_name www.somesite.com somesite.net www.somesite.net somesite.co.uk www.somesite.co.uk; rewrite ^(.*) http://somesite.com$1 permanent; } server { root /home/django/domains/somesite.com/live/somesite/; server_name somesite.com somesite-live.myserver.somesite.com; access_log /home/django/domains/somesite.com/live/log/nginx.log; location / { uwsgi_pass unix:////tmp/somesite-live.sock; include uwsgi_params; } location /media { try_files $uri $uri/ /index.html; } location /site_media { try_files $uri $uri/ /index.html; } location = /favicon.ico { empty_gif; } }

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• Removing grub and getting a dual boot of Linux Mint and Win 8.1 working after failed attempt

  - by ThroatOfWinter57

  I gave the details of my problem at reddit: http://www.reddit.com/r/linuxquestions/comments/27qrun/more_specific_questions_about_failed_win_81mint/ tl;dr: I deleted the /, /home, and swap partitions I made for mint after realizing my installation couldn't be booted into and gave the space back to my windows partition. Running boot-repair on my mint live session messed stuff up. Now I can't even boot to my live session usb because grub is left over. Windows 8.1 does work though.

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• Unable to connect to MSN network with Adium

  - by Adam Driscoll

  I'm new to the Mac world and tried both MSN Messenger for Mac (7.0 and 8.0 beta) as well as Adium to connect to the Windows network. I've enable 'Allow all incoming connections' in the Firewall settings. Windows Live Messenger works fine when connecting through the same router on my Windows laptop. I've triple checked my password and verified it through a web browser and Windows Live. Any ideas what my issue could be?

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• Using audio plugins in a rewire slave application

  - by Nik Reiman

  I would like to be able to use VST/AudioUnit effects from a rewire slave such as Ableton Live, but it seems that Live doesn't let you use plugins when running in this mode. I'm not exactly sure why that is, but it would be nice to get working so that I could use VST plugins from within GarageBand without having to use the VST2AU wrapper plugin. What sequencers let you use VST plugins when running as a rewire slave?

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• Ubuntu 10.04 Lucid on IBM Thinkpad T41

  - by naugtur

  I tried to boot my T41 from a Ubuntu Lucid liveCD and it worried me. The white text on violet background had green pixels around it. After the splashscreen went away Ubuntu popped an alert that the installer had some errors and will now run live. The live system worked fine I guess... Did anybody experience such behaviour?

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• High memory usage on the server - can't determine the process

  - by HTF

  I've noticed high memory usage on the server. Details: OS: CentOS 6.3 - x86_64 Web server: Nginx with PHP-FPM The server is generating PDF documents so the traffic is minimum. top: # top -b -n 1 -a top - 10:04:51 up 21 days, 18:57, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 92 total, 1 running, 91 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3%us, 0.2%sy, 0.0%ni, 99.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 3923092k total, 3720380k used, 202712k free, 133904k buffers Swap: 4194296k total, 12k used, 4194284k free, 147404k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15855 www-data 20 0 199m 4952 2128 S 0.0 0.1 0:00.06 php-fpm 15853 www-data 20 0 199m 4940 2028 S 0.0 0.1 0:00.06 php-fpm 15850 www-data 20 0 199m 4928 2020 S 0.0 0.1 0:00.05 php-fpm 15851 www-data 20 0 199m 4888 2020 S 0.0 0.1 0:00.06 php-fpm 15852 www-data 20 0 199m 4852 2020 S 0.0 0.1 0:00.06 php-fpm 15857 www-data 20 0 198m 4716 2020 S 0.0 0.1 0:00.06 php-fpm 17553 root 20 0 97816 3860 2924 S 0.0 0.1 0:00.03 sshd 15849 root 20 0 198m 3460 1072 S 0.0 0.1 0:00.12 php-fpm 13441 nginx 20 0 65608 2968 1604 S 0.0 0.1 0:02.06 nginx 13440 nginx 20 0 65608 2964 1600 S 0.0 0.1 0:01.87 nginx 17561 root 20 0 105m 1944 1488 S 0.0 0.0 0:00.01 bash 1150 xfs 20 0 20980 1784 704 S 0.0 0.0 0:00.13 xfs 15863 root 20 0 179m 1424 1028 S 0.0 0.0 0:00.00 rsyslogd 1 root 20 0 19224 1360 1088 S 0.0 0.0 0:17.96 init 1201 nrpe 20 0 40928 1288 704 S 0.0 0.0 3:57.64 nrpe 13226 root 20 0 114m 1216 612 S 0.0 0.0 0:00.01 crond 6691 root 20 0 64068 1156 488 S 0.0 0.0 0:09.59 sshd 13439 root 20 0 65104 1128 292 S 0.0 0.0 0:00.00 nginx 19026 root 20 0 15040 1116 844 R 0.0 0.0 0:00.00 top 451 root 16 -4 11052 1096 316 S 0.0 0.0 0:00.02 udevd 1174 root 18 -2 11048 1064 288 S 0.0 0.0 0:00.00 udevd 1175 root 18 -2 11048 1064 288 S 0.0 0.0 0:00.00 udevd 1065 root 16 -4 93168 824 560 S 0.0 0.0 0:16.00 auditd 1165 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1167 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1169 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1171 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1163 root 20 0 4056 560 480 S 0.0 0.0 0:00.00 mingetty 1176 root 20 0 4056 560 480 S 0.0 0.0 0:00.00 mingetty 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root RT 0 0 0 0 S 0.0 0.0 0:11.75 migration/0 4 root 20 0 0 0 0 S 0.0 0.0 44:30.28 ksoftirqd/0 5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 6 root RT 0 0 0 0 S 0.0 0.0 0:03.51 watchdog/0 7 root RT 0 0 0 0 S 0.0 0.0 0:11.63 migration/1 8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1 9 root 20 0 0 0 0 S 0.0 0.0 11:35.50 ksoftirqd/1 10 root RT 0 0 0 0 S 0.0 0.0 0:03.34 watchdog/1 11 root 20 0 0 0 0 S 0.0 0.0 1:36.68 events/0 12 root 20 0 0 0 0 S 0.0 0.0 1:50.57 events/1 13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cgroup 14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper 15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 netns 16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 async/mgr 17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pm 18 root 20 0 0 0 0 S 0.0 0.0 0:07.86 sync_supers 19 root 20 0 0 0 0 S 0.0 0.0 0:10.38 bdi-default 20 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/0 21 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/1 22 root 20 0 0 0 0 S 0.0 0.0 0:04.35 kblockd/0 23 root 20 0 0 0 0 S 0.0 0.0 0:04.18 kblockd/1 24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpid 25 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpi_notify 26 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpi_hotplug 27 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata/0 28 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata/1 29 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata_aux 30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksuspend_usbd 31 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khubd 32 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kseriod 33 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md/0 34 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md/1 35 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md_misc/0 36 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md_misc/1 37 root 20 0 0 0 0 S 0.0 0.0 0:00.48 khungtaskd 38 root 20 0 0 0 0 S 0.0 0.0 1:07.52 kswapd0 39 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd 40 root 39 19 0 0 0 S 0.0 0.0 0:22.00 khugepaged 41 root 20 0 0 0 0 S 0.0 0.0 0:00.00 aio/0 42 root 20 0 0 0 0 S 0.0 0.0 0:00.00 aio/1 43 root 20 0 0 0 0 S 0.0 0.0 0:00.00 crypto/0 44 root 20 0 0 0 0 S 0.0 0.0 0:00.00 crypto/1 49 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthrotld/0 50 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthrotld/1 52 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kpsmoused 53 root 20 0 0 0 0 S 0.0 0.0 0:00.00 usbhid_resumer 83 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kstriped 233 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0 234 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_1 321 root 20 0 0 0 0 S 0.0 0.0 0:00.00 virtio-blk 359 root 20 0 0 0 0 S 0.0 0.0 0:03.24 kdmflush 360 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdmflush 380 root 20 0 0 0 0 S 0.0 0.0 0:20.64 jbd2/dm-0-8 381 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 382 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 694 root 20 0 0 0 0 S 0.0 0.0 0:00.00 vballoon 697 root 20 0 0 0 0 S 0.0 0.0 0:00.00 virtio-net 818 root 20 0 0 0 0 S 0.0 0.0 0:00.00 jbd2/vda1-8 819 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 820 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 851 root 20 0 0 0 0 S 0.0 0.0 0:06.96 kauditd 1013 root 20 0 0 0 0 S 0.0 0.0 0:15.45 flush-253:0 ps: # ps aux --sort -vsz | head USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND www-data 13213 0.0 0.1 204416 4772 ? S 08:28 0:00 php-fpm: pool default www-data 13214 0.0 0.1 204416 4776 ? S 08:28 0:00 php-fpm: pool default www-data 13215 0.0 0.1 204416 4832 ? S 08:28 0:00 php-fpm: pool default www-data 13216 0.0 0.1 204416 4776 ? S 08:28 0:00 php-fpm: pool default www-data 13218 0.0 0.1 204416 4956 ? S 08:28 0:00 php-fpm: pool default free: #free -m total used free shared buffers cached Mem: 3831 3530 300 0 130 143 -/+ buffers/cache: 3256 574 Swap: 4095 0 4095 When I stooped Nginx, PHP-FPM the memory usage was still the same. Could you help me to investigate what is consuming the memory on the system? Regards

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• How to make a boot profile permanent?

  - by Usman Ajmal

  Hi, I have a Finnix live CD. I can customize it by remastering it. When I boot with the live CD I need to make a little change in the boot profile The boot profile before making the changes is linux apm=power-off vga=791 initrd=minirt quiet The boot profile after making the change become linux apm=power-off vga=791 initrd=minirt quiet root=/dev/sr0 Now, I need to make this change (adding root=/dev/sr0) permanent. How can I do that?

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• Kernel-mode Authentication: 401 errors when accessing site from remote machines

  - by CJM

  I have several Classic ASP sites that use Integrated Windows Authentication and Kerberos delegation. They work OK on the live servers (recently moved to a Server 2008/IIS7 servers), but do not work fully on my development PC or my development server. The IIS on both machines were configured through an IIS web deployment tool package which was exported from an old machine; the deployment didn't work perfectly, and I had to tinker a bit to get the sites working. When accessing the apps locally on either machine, they work fine; when accessing from another machine, the user is prompted by a username/password dialog, and regardless of what you enter, ultimately it results in a 401 (Unauthorised) error. I've tried comparing the configuration of these machines against similar live servers (that all work fine), and they seem generally comparable (given that none of the live servers are yet on IIS7.5 (Windows 7/Server 2008 R2). These applications run in a common application pool which uses a special domain user as it's identity - this user has similar permissions on the live and development machines. On IIS6 platforms, to enable kerberos delegation, I needed to set up some SPNs for this user, and they are still in place (even though I don't believe they are needed any longer for IIS7+ due to kernel-mode authentication), Furthermore, this account is enabled for Kerberos delegation in Active Directory, as is each machine I am dealing with. I'm considering the possibility that the deployment might have made changes/failed to make changes to the IIS configuration thus causing this problem. Perhaps a complete rebuild (minus another web deployment attempt) would solve the problem, but I'd rather fix (thus understand) the current problem. Any ideas so far? I've just had another attempt at fixing this issue, and I've made some progress, but I don't have a complete fix...yet. I've discovered that if I access the sites via IP address (than via NetBIOS name), I get the same dialog, except that it accepts my credentials and thus the application works - not quite a fix, but a useful step. More interestingly, I discovered that if I disable Kernel-mode authentication (in IIS Manager Website Authentication Advanced Settings), the applications work perfectly. My foggy understanding is that this is effectively working in the pre-IIS7 way. A reasonable short-term solution, but consider the following explicit advice from IIS on this issue: By default, IIS enables kernel-mode authentication, which may improve authentication performance and prevent authentication problems with application pools configured to use a custom identity. As a best practice, do not disable this setting if Kerberos authentication is used in your environment and the application pool is configured to use a custom identity. Clearly, this is not the way my applications should be working. So what is the issue?

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• Rackspace cloud windows server beta?

  - by ekamtaj

  Hey, Can I use Rackspace cloud servers for windows beta in a live production environment? How reliable are beta? And is anyone using beta for live production here?

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• Windows Media Center Buffering and Asus MyCinema U3100mini

  - by dsimcha

  I'm running an Asus MyCinema U3100mini ATSC on Windows 7 64-bit. When I play live TV in Windows Media Center, it's very choppy and uses 500+ MB of RAM, I'm guessing due to the hard drive buffering functionality. Is there any way to disable the live TV pause buffer completely? If not, can anyone recommend alternative software that: Works with the MyCinema. Is lightweight and not horribly bloated with features I'll never use like Windows Media Center is.

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• How can I capture a video with Windows 7

  - by user12029

  I am trying to capture a live video from my digital camera using Windows 7. Live Movie maker and Windows Movie maker 2.6 do not have "capture" menu item. Apparently, Windows Movie maker 2.1 has a "capture" menu item. However, I don't know how to download it on Windows 7. Any suggestion?

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• Secure linux distro that sends traffic through Tor

  - by gravestone

  I'm looking for a live Linux distro that is secure and preserves my anonymity online. For what I need, Tor seems to do the job – but such software requires configuration that someone who is not knowledgeable in how it works might find difficult. I was looking at 'Lightweight portable security' but it does not specify whether it sends all traffic through Tor. Does anyone know more information about it and/or any other such live Linux distro?

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• Moving Life files on a unix like system

  - by Recursion

  On a recent job classified, it was listed as a requirement to have the ability to move live files in a data center setting. What does this mean and how can one move live files? The Posting for for a general Unix admin at a datacenter.

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• Creating Test Sites

  - by Robert

  I have a website running off site. When we hire someone I would like to create a test site (a copy of live site) for the new employee to tinker with. I will need to take fresh copies of the Files and Database (basically a snapshot) and allow them to access these copied files and database so they could edit and upload them to see the changes they made as if it was the live site Basically what is the best practice for creating a copy of a website for testing? Server is running Linux, PHP, mySQL

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• Is it possible to change the Raid5 chunk size of an existing device?

  - by AlexCombas

  I have an existing raid5 device which I created using mdadm on Linux. When I created the device I set the chunk size to 64 but I would like to test the performance of various sizes but I don't want to have to rebuild my entire system to do so. If it is not possible to do it live then is it possible to do this by booting with a rescue disk? Any advice on the steps how to do this, either live or with a rescue disk, will be greatly appreciated.

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• Is it possible to have Sharepoint display a Shared Exchange calendar?

  - by BejeweledOne

  The reason for this is that we use Live meeting heavily. While you can create a live meeting in a SharePoint calendar, because it is just a list, the links do not work if accessed through Sharepoint. We would need to have these links work properly. We use MOSS 2007 and Exchange/Outlook 2007

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• Adding additional locations to Office 2013 save "Places"

  - by Paperjam

  When saving a document in Office, you are given the option of saving locally or to your SkyDrive account. Presumably, it's possible to add additional locations to this menu (Dropbox, etc.). Is this possible in the Live Preview, and how does one accomplish this? Edit: when I asked this question, I was not logged into a Live account. I have since logged in and discovered services may be added to the logged-in account, however Dropbox (and non-MS services) are not offered. Account settings:

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• Do I need the meta-key for vim?

  - by Riyaah

  I'm looking in to learning emacs or vim. I started out with emacs but found the need for a meta key to be a hassle, especially since I have a non-english keyboard layout on my macbook. So far I haven't seen any references to meta in vim, so my question is: Can I live without meta in vim? If so that'll settle the vim vs. emacs question for me, otherwise I'll just have to learn to live with some workaround.

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• How to format pendrive from fat32 to ext3 in windows7

  - by newb

  I am trying to make a live usb of OPHCRACK and tried to boot from FAT32 pendrive. But after making live usb and boot from it the ophcrack didnt work. After searching a while i came to understand that ophcrack will not work in a fat32 pendrive and we have to convert it into ext3. But i am getting hard time finding a method or software which can be used to convert fat32 pendrive to ext3 in windows 7. Can you suggest any method or software's for this purpose

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• Ruby on Rail using MYSQL database

  - by Joseph Misiti

  Hey guys, New to rails, trying to figure out something simple. Seems as though I cannot migrate a very simple mysql database using "rake db:migrate" command. Here is the issue: I know rails defaults to sqllite right now, but I need to use mysql for a series of reasons. Use the following commands rails -d mysql MyMoviesSQL cd MyMoviesSQL script/generate scaffold Movies title:string rating:integer rake db:migrate never get past here because i see the following error: in /Users/user/websites/MyMovieSQL) rake aborted! NoMethodError: undefined method `ord' for 0:Fixnum: SET NAMES 'utf8' (See full trace by running task with --trace) using trace XXXXX-macbook-pro:MyMovieSQL user$ rake db:migrate --trace (in /Users/user/websites/MyMovieSQL) ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:migrate rake aborted! NoMethodError: undefined method ord' for 0:Fixnum: SET NAMES 'utf8' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract_adapter.rb:219:inlog' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:323:in execute' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:599:inconfigure_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:594:in connect' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:203:ininitialize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:75:in new' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb:75:inmysql_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in send' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:innew_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:245:in checkout_new_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:188:incheckout' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in loop' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:incheckout' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in synchronize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:183:incheckout' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:98:in connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:326:inretrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:123:in retrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:115:inconnection' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:435:in initialize' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:400:innew' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:400:in up' /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/migration.rb:383:inmigrate' /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/tasks/databases.rake:116 /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in call' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:inexecute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:inexecute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:insynchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:ininvoke' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in invoke_task' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:intop_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:instandard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31 /usr/bin/rake:19:inload' /usr/bin/rake:19 no clue what is going on, if they want me to add a patch because the methods does not exist, please tell me which file to add it to, and also, how in the future do i figure out which file I need to patch (I see it looks like its a method in FixNum class) here is a patch to a problem that looks similar, but its a different version of ruby http://www.mail-archive.com/[email protected]/msg00250.html versions rails 2.3.5 ruby 1.8.6 gem list yeilds: * LOCAL GEMS * actionmailer (2.3.5, 1.3.6) actionpack (2.3.5, 1.13.6) actionwebservice (1.2.6) activerecord (2.3.5, 1.15.6) activeresource (2.3.5) activesupport (2.3.5, 1.4.4) acts_as_ferret (0.4.1) capistrano (2.0.0) cgi_multipart_eof_fix (2.5.0) daemons (1.0.9) dbi (0.4.3) deprecated (2.0.1) dnssd (0.6.0) fastthread (1.0.1) fcgi (0.8.7) ferret (0.11.4) gem_plugin (0.2.3) highline (1.2.9) hpricot (0.6) libxml-ruby (0.9.5, 0.3.8.4) mongrel (1.1.4) needle (1.3.0) net-sftp (1.1.0) net-ssh (1.1.2) rack (1.0.1) rails (2.3.5) rake (0.8.7, 0.7.3) RedCloth (3.0.4) ruby-openid (1.1.4) ruby-yadis (0.3.4) rubygems-update (1.3.6) rubynode (0.1.3) sqlite3-ruby (1.2.1) termios (0.9.4) thanks in advanced

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• Overwriting the content from one MOSS content database to another

  - by 78lro

  We have a content database on our live moss server. It contains one site collection with several sub-sites. I'm using the stsadm export command to produce a cmp file, then moving this to our test server in a different farm. I then want to import this content into the content database on our test farm, using the import stsadm command results in me being left with all the existing test data as well as the live data. I tried detaching the existing content database from test in central admin and creating a new empty one,to the then run the import against that but the import failed as obviously there's not root site in the empty db. The aim is to have the data on test look like live, clearing out all the test data. Can anyone suggest a good approach to this type of problem?

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• subsonic.migrations and Oracle XE

  - by andrecarlucci

  Hello, Probably I'm doing something wrong but here it goes: I'm trying to create a database using subsonic.migrations in an OracleXE version 10.2.0.1.0. I have ODP v 10.2.0.2.20 installed. This is my app.config: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/> </configSections> <connectionStrings> <add name="test" connectionString="Data Source=XE; User Id=test; Password=test;"/> </connectionStrings> <SubSonicService defaultProvider="test"> <providers> <clear/> <add name="test" type="SubSonic.OracleDataProvider, SubSonic" connectionStringName="test" generatedNamespace="testdb"/> </providers> </SubSonicService> </configuration> And that's my first migration: public class Migration001_Init : Migration { public override void Up() { //Create the records table TableSchema.Table records = CreateTable("asdf"); records.AddColumn("RecordName"); } public override void Down() { DropTable("asdf"); } } When I run the sonic.exe, I get this exception: Setting ConfigPath: 'App.config' Building configuration from D:\Users\carlucci\Documents\Visual Studio 2008\Projects\Wum\Wum.Migration\App.config Adding connection to test ERROR: Trying to execute migrate Error Message: System.Data.OracleClient.OracleException: ORA-02253: especifica‡Æo de restri‡Æo nÆo permitida aqui at System.Data.OracleClient.OracleConnection.CheckError(OciErrorHandle errorHandle, Int32 rc) at System.Data.OracleClient.OracleCommand.Execute(OciStatementHandle statementHandle, CommandBehavior behavior, Boolean needRowid, OciRowidDescriptor& rowidDescriptor, ArrayList& resultParameterOrdinals) at System.Data.OracleClient.OracleCommand.ExecuteNonQueryInternal(Boolean needRowid, OciRowidDescriptor& rowidDescriptor) at System.Data.OracleClient.OracleCommand.ExecuteNonQuery() at SubSonic.OracleDataProvider.ExecuteQuery(QueryCommand qry) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\OracleDataProvider.cs:line 350 at SubSonic.DataService.ExecuteQuery(QueryCommand cmd) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\DataService.cs:line 544 at SubSonic.Migrations.Migrator.CreateSchemaInfo(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 249 at SubSonic.Migrations.Migrator.GetCurrentVersion(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 232 at SubSonic.Migrations.Migrator.Migrate(String providerName, String migrationDirectory, Nullable`1 toVersion) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 50 at SubSonic.SubCommander.Program.Migrate() in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 264 at SubSonic.SubCommander.Program.Main(String[] args) in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 90 Execution Time: 379ms What am I doing wrong? Thanks a lot for any help :) Andre Carlucci UPDATE: As pointed by Anton, the problem is the subsonic OracleSqlGenerator. It is trying to create the schema table using this sql: CREATE TABLE SubSonicSchemaInfo ( version int NOT NULL CONSTRAINT DF_SubSonicSchemaInfo_version DEFAULT (0) ) Which doesn't work on oracle. The correct sql would be: CREATE TABLE SubSonicSchemaInfo ( version int DEFAULT (0), constraint DF_SubSonicSchemaInfo_version primary key (version) ) The funny thing is that since this is the very first sql executed by subsonic migrations, NOBODY EVER TESTED it on oracle.

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