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  • NLB NIC w/ Static IP permanently "Acquiring Network Address" after adding more IP's to the cluster

    - by I.T. Support
    We have a 2 node NLB cluster. I recently added more IP's to the cluster range, after which point, the NLB NIC's on both of my nodes ended up in a permanent "acquiring network address" state. The cluster appears to be functioning despite this hang in acquiring an address. We've also rebooted the machines, and these NIC's remain in this state "acquiring network address" even after reboot, which I find troubling. Questions: Does anyone know where I can find documentation on how NLB binds to a NIC? (are there dll's involved, drivers, etc.) Does anyone know of any programs that have known incompatability issues with NLB? We have an application server installed on these NLB nodes (AOL Server) that interacts with the NIC's as well, and I suspect that it might be causing this issue. Before I go directly to Microsoft, I want to gather as much information as possible about the issue. Any help / guidance would be much appreciated...

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  • asterisk public ip and clients with public / private ip

    - by user1165435
    I am using asterisk with a public ip. I have 4 clients which could be behind a nat or with public ip. I did set for all the clients nat=yes and canreinvite=no and qualify=yes. I did notice that if the clients were behind the nat everything went ok, but if the clients had public the call did not establish (no ringing on the asterisk server). WHere is the problem? Is there a bug in asterisk? As I've no there should be no problem for public ip and server with public ip.

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  • Hosting a website from a dynamic IP

    - by nick
    I recently upgraded my internet to the point that it is much faster and more reliable than my current webhost. I would like to move my current domain to be hosted at home, but my IP address is dynamic. As far as I know, I only get a new IP when I restart my modem and or router (which is almost never) or when cable one (my ISP) pushes out a firmware update (rarely). There are a few ways I can see doing this 1) convince my ISP to give me a static IP 2) assign my router my current IP to force a static IP (which might work?) 3) set my dns record to my current IP address and update it on the rare occasions that it changes. Obviously I'm hoping that the first one works, but I don't want to pay a lot of extra money (if that's what it takes) to get a static IP address. Has anyone had any luck with something like that?

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  • Server overloaded with log messages: tty_release_dev: pts0: read/write wait queue active!

    - by Raph
    In the logs, I have this (extract from the full kernel messages logges at 06:01:14): Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.863038] BUG: unable to handle kernel NULL pointer dereference at 0000000000000015 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861081] Process telnet (pid: 20247, threadinfo ffff8800f8598000, task ffff8800024d4500) And then the server logs flooded by this message: Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861547] tty_release_dev: pts0: read/write wait queue active! In the end, 2 hours later, I had to reboot because it had become inaccessible: the load hat grown to 160%. The last command does not show anyone logged on pts0 at that time. I also don't know where this telnet process could come from.... This is an AWS instance running UBUNTU 10.04 LTS And here are the complete logs: Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.863038] BUG: unable to handle kernel NULL pointer dereference at 0000000000000015 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861007] IP: [<ffffffff81363dde>] n_tty_read+0x2ce/0x970 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861019] PGD ee13d067 PUD f8698067 PMD 0 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861025] Oops: 0000 [#1] SMP Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861028] last sysfs file: /sys/devices/xen/vbd-2208/block/sdk/removable Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861032] CPU 0 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861034] Modules linked in: ipv6 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861040] Pid: 20247, comm: telnet Not tainted 2.6.32-312-ec2 #24-Ubuntu Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861042] RIP: e030:[<ffffffff81363dde>] [<ffffffff81363dde>] n_tty_read+0x2ce/0x970 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861047] RSP: e02b:ffff8800f8599d88 EFLAGS: 00010246 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861049] RAX: 0000000000000015 RBX: ffff8800f8598000 RCX: 0000000001aed069 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861052] RDX: 0000000000000000 RSI: ffff8800f8599e67 RDI: ffff8801dd833d1c Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861054] RBP: ffff8800f8599e98 R08: ffffffff8135eb10 R09: 7fffffffffffffff Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861057] R10: 0000000000000000 R11: 0000000000000246 R12: ffff8801dd833800 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861059] R13: 0000000000000000 R14: ffff8801dd833a68 R15: ffff8801dd833d1c Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861065] FS: 00007f90121f6720(0000) GS:ffff880002c40000(0000) knlGS:0000000000000000 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861068] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861070] CR2: 0000000000000015 CR3: 0000000032a59000 CR4: 0000000000002660 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861076] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861081] Process telnet (pid: 20247, threadinfo ffff8800f8598000, task ffff8800024d4500) Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861083] Stack: Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861085] 0000000000000000 0000000001aed069 ffff8801dd8339c8 ffff8800024d4500 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861089] <0> ffff8801dd8339c0 ffff8801dd833c90 0000000001aed027 ffff8800024d4500 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861094] <0> ffff8801dd8338d8 0000000000000000 ffff8800024d4500 0000000000000000 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861099] Call Trace: Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861107] [<ffffffff81034bc0>] ? default_wake_function+0x0/0x10 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861113] [<ffffffff8135ebb6>] tty_read+0xa6/0xf0 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861118] [<ffffffff810ee7e5>] vfs_read+0xb5/0x1a0 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861122] [<ffffffff810ee91c>] sys_read+0x4c/0x80 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861127] [<ffffffff81009ba8>] system_call_fastpath+0x16/0x1b Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861131] [<ffffffff81009b40>] ? system_call+0x0/0x52 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861133] Code: 85 d2 0f 84 92 00 00 00 45 8b ac 24 5c 02 00 00 f0 45 0f b3 2e 45 19 ed 49 63 84 24 5c 02 00 00 49 8b 94 24 50 02 00 00 4c 89 ff <0f> be 1c 02 e8 a9 d3 14 00 41 8b 94 24 5c 02 00 00 41 83 ac 24 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861171] RIP [<ffffffff81363dde>] n_tty_read+0x2ce/0x970 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861175] RSP <ffff8800f8599d88> Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861171] RIP [<ffffffff81363dde>] n_tty_read+0x2ce/0x970 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861175] RSP <ffff8800f8599d88> Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861177] CR2: 0000000000000015 Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861205] ---[ end trace f10eee2057ff4f6b ]--- Apr 21 06:01:14 ip-10-49-109-107 kernel: [233185.861547] tty_release_dev: pts0: read/write wait queue active!

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  • Mac Server bizzare routing table

    - by The Unix Janitor
    My mac routing table usually is very simple. I know it's based on bsd , but what's it doing or trying to do. My routing table is usually very simple however, the second one, default was point to link5 ? Is this normal, or is this IPV6 craziness at work? Can somehelp me understand what OSX/BSD is doing? nternet: Destination Gateway Flags Refs Use Netif Expire default 192.168.1.254 UGSc 22 0 en1 127 127.0.0.1 UCS 0 0 lo0 127.0.0.1 127.0.0.1 UH 4 44102 lo0 169.254 link#5 UCS 0 0 en1 192.168.1 link#5 UCS 6 0 en1 192.168.1.1 0:18:39:6d:89:c5 UHLWIi 0 0 en1 739 192.168.1.189 50:ea:d6:86:26:91 UHLWIi 0 0 en1 798 192.168.1.194 127.0.0.1 UHS 0 0 lo0 192.168.1.203 5c:95:ae:dd:34:8d UHLWIi 0 0 en1 316 192.168.1.253 a:76:ff:b5:51:79 UHLWIi 0 0 en1 911 192.168.1.254 8:76:ff:b5:51:79 UHLWIi 32 204 en1 1117 192.168.1.255 ff:ff:ff:ff:ff:ff UHLWbI 0 7 en1 Internet6: Destination Gateway Flags Netif Expire ::1 link#1 UHL lo0 fe80::%lo0/64 fe80::1%lo0 UcI lo0 fe80::1%lo0 link#1 UHLI lo0 fe80::%en1/64 link#5 UCI en1 fe80::21b:63ff:fec7:c486%en1 0:1b:63:c7:c4:86 UHLI lo0 fe80::223:12ff:fe01:d7fe%en1 0:23:12:1:d7:fe UHLWIi en1 ff01::%lo0/32 fe80::1%lo0 UmCI lo0 ff01::%en1/32 link#5 UmCI en1 ff02::%lo0/32 fe80::1%lo0 UmCI lo0 ff02::%en1/32 link#5 UmCI en1 ----------------------------------- Bizzare routing table here Internet: Destination Gateway Flags Refs Use Netif Expire default link#5 UCS 113 0 en1 17.72.255.12 0:50:7f:5e:92:e2 UHLWIi 2 7 en1 1156 64.4.23.141 0:50:7f:5e:92:e2 UHLWIi 0 3 en1 1181 64.4.23.143 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1189 64.4.23.147 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 64.4.23.149 link#5 UHLWIi 0 1 en1 64.4.23.150 0:50:7f:5e:92:e2 UHLWIi 0 24 en1 1175 64.4.23.151 link#5 UHLWIi 0 1 en1 64.4.23.153 link#5 UHLWIi 0 1 en1 64.4.23.155 link#5 UHLWIi 0 1 en1 64.4.23.157 0:50:7f:5e:92:e2 UHLWIi 0 3 en1 1181 64.4.23.165 link#5 UHLWIi 0 2 en1 64.4.23.166 link#5 UHLWIi 0 1 en1 65.55.223.15 0:50:7f:5e:92:e2 UHLWIi 3 21 en1 1189 65.55.223.16 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 65.55.223.17 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1199 65.55.223.20 link#5 UHLWIi 0 1 en1 65.55.223.23 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1199 65.55.223.31 link#5 UHLWIi 0 1 en1 65.55.223.32 link#5 UHLWIi 0 1 en1 65.55.223.37 0:50:7f:5e:92:e2 UHLWIi 3 21 en1 1189 65.55.223.38 link#5 UHLWIi 0 1 en1 69.163.252.33 0:50:7f:5e:92:e2 UHLWIi 1 9 en1 1181 77.67.32.254 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1164 111.221.74.13 0:50:7f:5e:92:e2 UHLWIi 0 24 en1 1183 111.221.74.15 link#5 UHLWIi 0 1 en1 111.221.74.16 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 111.221.74.17 0:50:7f:5e:92:e2 UHLWIi 3 23 en1 1172 111.221.74.21 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 111.221.74.23 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1172 111.221.74.24 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1181 111.221.74.26 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1199 111.221.74.29 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1181 111.221.74.31 link#5 UHLWIi 0 1 en1 111.221.74.37 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1190 111.221.74.38 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1199 111.221.77.141 0:50:7f:5e:92:e2 UHLWIi 0 3 en1 1199 111.221.77.144 link#5 UHLWIi 0 1 en1 111.221.77.145 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1190 111.221.77.149 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 111.221.77.154 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 111.221.77.156 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1190 111.221.77.157 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 111.221.77.162 link#5 UHLWIi 0 1 en1 111.221.77.165 link#5 UHLWIi 0 1 en1 127 127.0.0.1 UCS 0 0 lo0 127.0.0.1 127.0.0.1 UH 4 40073 lo0 157.55.56.140 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1199 157.55.56.141 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 157.55.56.143 link#5 UHLWIi 0 1 en1 157.55.56.147 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 157.55.56.148 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 157.55.56.149 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1189 157.55.56.150 link#5 UHLWIi 0 1 en1 157.55.56.157 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1172 157.55.56.158 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1175 157.55.130.143 link#5 UHLWIi 0 1 en1 157.55.130.144 link#5 UHLWIi 0 1 en1 157.55.130.145 0:50:7f:5e:92:e2 UHLWIi 0 24 en1 1181 157.55.130.152 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1199 157.55.130.153 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1172 157.55.130.155 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1189 157.55.130.156 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1186 157.55.130.157 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1189 157.55.130.158 0:50:7f:5e:92:e2 UHLWIi 0 3 en1 1172 157.55.130.160 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1189 157.55.130.162 0:50:7f:5e:92:e2 UHLWIi 3 21 en1 1193 157.55.130.166 link#5 UHLWIi 0 1 en1 157.55.235.141 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1193 157.55.235.142 link#5 UHLWIi 1 1 en1 157.55.235.144 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1172 157.55.235.145 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1172 157.55.235.149 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 157.55.235.151 link#5 UHRLWIi 0 36 en1 157.55.235.152 0:50:7f:5e:92:e2 UHLWIi 3 21 en1 1189 157.55.235.153 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1178 157.55.235.156 link#5 UHLWIi 0 2 en1 157.55.235.157 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 157.55.235.158 link#5 UHLWIi 0 1 en1 157.55.235.159 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 157.55.235.162 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1183 157.55.235.166 0:50:7f:5e:92:e2 UHLWIi 0 25 en1 1181 157.56.52.14 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1181 157.56.52.15 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1183 157.56.52.16 link#5 UHLWIi 0 1 en1 157.56.52.17 0:50:7f:5e:92:e2 UHLWIi 3 14 en1 1199 157.56.52.19 link#5 UHLWIi 0 1 en1 157.56.52.20 0:50:7f:5e:92:e2 UHLWIi 3 17 en1 1199 157.56.52.22 0:50:7f:5e:92:e2 UHLWIi 0 24 en1 1181 157.56.52.25 link#5 UHLWIi 0 1 en1 157.56.52.28 link#5 UHLWIi 0 1 en1 157.56.52.29 link#5 UHLWIi 0 1 en1 157.56.52.31 link#5 UHLWIi 0 1 en1 157.56.52.33 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1189 169.254 link#5 UC 1 0 en1 169.254.174.250 127.0.0.1 UHS 1 0 lo0 169.254.255.255 ff:ff:ff:ff:ff:ff UHLWb 0 2 en1 193.88.6.19 link#5 UHLWIi 0 1 en1 194.165.188.82 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1166 195.46.253.211 link#5 UHLWIi 0 1 en1 204.9.163.143 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1178 213.199.179.141 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1172 213.199.179.142 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1165 213.199.179.143 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1166 213.199.179.146 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1172 213.199.179.147 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1164 213.199.179.148 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1165 213.199.179.149 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1172 213.199.179.150 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1165 213.199.179.151 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1164 213.199.179.153 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1166 213.199.179.157 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1167 213.199.179.160 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1165 213.199.179.161 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1172 213.199.179.162 0:50:7f:5e:92:e2 UHLWIi 0 2 en1 1163 213.199.179.165 0:50:7f:5e:92:e2 UHLWIi 0 1 en1 1164 213.199.179.166 0:50:7f:5e:92:e2 UHLWIi 0 3 en1 1164 224.0.0.251 1:0:5e:0:0:fc UHmLWI 0 0 en1 255.255.255.255 ff:ff:ff:ff:ff:ff UHLWbI 0 2 en1 Internet6: Destination Gateway Flags Netif Expire ::1 link#1 UHL lo0 fe80::%lo0/64 fe80::1%lo0 UcI lo0 fe80::1%lo0 link#1 UHLI lo0 fe80::%en1/64 link#5 UCI en1 fe80::21b:63ff:fec7:c486%en1 0:1b:63:c7:c4:87 UHLI lo0 fe80::223:12ff:fe01:d7fe%en1 0:23:12:1:d7:ff UHLWIi en1 ff01::%lo0/32 fe80::1%lo0 UmCI lo0 ff01::%en1/32 link#5 UmCI en1 ff02::%lo0/32 fe80::1%lo0 UmCI lo0 ff02::%en1/32 link#5 UmCI en1

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  • IPv4 private address assignment

    - by helloworld922
    I'm working on a private network which uses static IPv4 addresses as well as DHCP addressing for the physical LAN network. At a previous company I worked at they would assign static addresses in the 10.*.*.* space and all DHCP/LAN addresses were assigned in the 192.168.*.* space. Both of these address spaces are defined in the IPv4 private address space and there were never any internal conflicts. From personal experience at home, school, at work, and pretty much any other machine I've dealt with extensively (Windows and a few Linux distros), the DHCP server would always by default choose an address from the 192.168.*.* address space. Now my question is can I rely on this behavior? Do DHCP servers always by default assign from the 192.168.*.* pool (or any pool other than the 10.*.*.* pool), leaving the 10.*.*.* pool free for private static addressing? If not, under what conditions might a DHCP server choose an address in the 10.*.*.* address space?

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  • PHP IP Validation Help

    - by Zubair1
    Hello, I am using this IP Validation Function that i came across while browsing, it has been working well until today i ran into a problem. For some reason the function won't validate this IP as valid: 203.81.192.26 I'm not too great with regular expressions, so would appreciate any help on what could be wrong. If you have another function, i would appreciate if you could post that for me. |--------------------------------------------| The code for the function is below: |--------------------------------------------| public static function validateIpAddress($ip_addr) { global $errors; $preg = '#^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}' . '(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$#'; if(preg_match($preg, $ip_addr)) { //now all the intger values are separated $parts = explode(".", $ip_addr); //now we need to check each part can range from 0-255 foreach($parts as $ip_parts) { if(intval($ip_parts) > 255 || intval($ip_parts) < 0) { $errors[] = "ip address is not valid."; return false; } return true; } return true; } else { $errors[] = "please double check the ip address."; return false; } }

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  • IP Address Validation Help

    - by Zubair1
    I am using this IP Validation Function that I came across while browsing, it has been working well until today i ran into a problem. For some reason the function won't validate this IP as valid: 203.81.192.26 I'm not too great with regular expressions, so would appreciate any help on what could be wrong. If you have another function, I would appreciate if you could post that for me. The code for the function is below: public static function validateIpAddress($ip_addr) { global $errors; $preg = '#^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}' . '(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$#'; if(preg_match($preg, $ip_addr)) { //now all the intger values are separated $parts = explode(".", $ip_addr); //now we need to check each part can range from 0-255 foreach($parts as $ip_parts) { if(intval($ip_parts) > 255 || intval($ip_parts) < 0) { $errors[] = "ip address is not valid."; return false; } return true; } return true; } else { $errors[] = "please double check the ip address."; return false; } }

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  • Real server, Multiple IP Addresses, HyperV Virtual Server, How to partition IPs across real and Virtual NICs

    - by Steven_W
    This is a slightly difficult problem to explain without same basic background information - I'll try and refine the question later as necessary Originally, I have a single hosted server (Win 2008R2) with the following range of 8 IP addresses. - Single NIC - IP: x.x.128.72 -> x.x.128.79 - Subnet: x.x.255.192 - GW: x.x.128.65 After installing Hyper-V and setting up a single virtual server on the same box, I then wanted to assign one of the IP addresses to the virtual server, leaving everything else running normally. -- Firstly, I tried using the "External" network, but (even after setting IPs on the "Virtual Adapter" similar to Here but struggled to get networking running at all. I needed to keep the server running (otherwise I would have spent more time pursuing this approach) Q1 ... Was this a sensible thing to do ? Should I have carried on down this route ? -- I then decided to try different approach - Set the HyperV network to "Internal" (visible to Management OS) - Physical NIC - IP: x.x.128.72 -> x.x.128.75 - Subnet: x.x.255.192 - GW: x.x.128.65 - Virtual NIC - IP: x.x.128.78 - Subnet: x.x.255.252 - GW: x.x.128.72 ... { The same as the IP of the physical NIC ) - Virtual OS-NIC - IP: x.x.128.77 - Subnet: x.x.255.252 - GW: x.x.128.78 ... { The same as the IP of the host virtual-NIC ) -- Surprisingly enough, this approach actually worked, and I was able to connect from all the following: - Internet to/from physical NIC (x.x.128.72) - physical NIC (x.x.128.72) to virtual-OS-NIC (x.x.128.77) e.g. testing via ping + FTP - Internet to/from virtual-OS-NIC (x.x.128.72) -- The problem I have is that this approach seems to only last for a short while (a few hours). After this time, it seems that I lose the ability to connect from Virtual-OS-NIC to/from the internet (but I can still connect from the host-OS to the virtual-OS and from the host-OS to the internet) I have re-tested this a couple of times with the same results ... I leave the server on for a few hours (e.g. overnight), and when I come back in the morning, the Virtual-OS loses the ability to route to the internet -- I'm not quite sure what to look at next (or whether I'm going about this completely the wrong way ) One "possible relevant item" is that the host-OS is also running RRAS (Routing and Remote Access), but this is only to run a simple VPN -- Q2 - Wheat should I be looking at next ? (Any good references / recommendations of what to try) Would appreciate any thoughts or comments (even if you tell me I'm going about this the wrong way)

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  • Homework with allocate subnet IP address

    - by Don Lun
    I'm having difficulty solving a subnet allocation homework problem. Assume that a university has an address block 128.205.224.0/19. It has to allocate addresses for 2 departments' networks, each of size 1800, and for 4 offices, of sizes 550, 600, 650, and 750 nodes respectively. Assuming that the university network allocates addresses sequentially from the beginning of the allocated allocated address space, what are the prefix allocations for these subnetworks? I first thought in this way: There should be 6 subnets in the network. So I need 3 bits for the subnets. So 3 + 19 = 22 bits should be the network bits. Then there are only 10 bits left. 2^10 = 1024 < 1800, so this cannot work. Could you guys give me a hint or some thoughts for solving this problem?

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  • Ping to IP address returned Destination Unreachable for a different IP address... huh?

    - by Hafthor
    This was totally an isolated incident, but I performed this command: ping 192.168.1.134 and got this result [image]: Pinging 192.168.1.134 with 32 bytes of data: Reply from 192.168.1.133: Destination host unreachable. Reply from 192.168.1.134: bytes=32 time=75ms TTL=128 Reply from 192.168.1.134: bytes=32 time=83ms TTL=128 Reply from 192.168.1.134: bytes=32 time=96ms TTL=128 note the .133 in the first 'unreachable' reply. I guess I don't understand how this is possible - even given a totally crazy coincidence.

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  • Tips and Suggestions IP Address Re-Addressing?

    - by RSXAdmin
    Hello serverfault Universe, My ever evolving and expanding local area network is currently using a class-C address. My network consists of multiple subnets depending on site/location. 192.168.1.x is site HQ 192.168.5.x is secondary site 192.168.10.x is so on and so forth. Long story short - I have inherited this network design from the previous admin who has left the company which started off with a dozen people and now has just over 300 full time/part time employees. We do not yet have client VPN access; but we do have site to site VPN setup. My question is, in preparation for outside client access to my network via Cisco ASA, I would like to re-address the HQ site because I understand a 192.168.1.x or 192.168.0.x are not very good choices for a company subnet - it may conflict with a home user's LAN when connecting to my LAN, I believe? Through your experience, does anyone out there have any suggestions and tips on how I can proceed with re-addressing my subnets. If I designed this network I would have gone with a 10.0.0.0 (mask 255.255.255.0) so I am leaning towards changing it to fit. Thank you.

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  • 3D Studio Max biped restrictions?

    - by meds
    I have a stock biped character in 3D studio max which has a jump animation. The problem I have with the jump animation is that there is actual y offset happening inside it which makes it awkward to play while the character is jumping since it's not only jumping in the game world but the jump animation is adding its own height offset. I'm tryuing to remove the jump animations height offset, so far I've found the root node and deleted all its key frames which has helped a bit. The problem I'm having now is that the character still has some height offset and if I try to lower it it has a fake 'ground' that isn't at 0 and the limbs sort of bend on the imaginary floor, si there a way to remove this restriction just for the jump animation? Here's what I mean: http://i.imgur.com/qoWIR.png Any idea for a fix? I'm using Unity 3D if that opens any other possibilities...

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  • Producer-consumer pattern with consumer restrictions

    - by Dan
    I have a processing problem that I am thinking is a classic producer-consumer problem with the two added wrinkles that there may be a variable number of producers and there is the restriction that no more than one item per producer may be consumed at any one time. I will generally have 50-100 producers and as many consumers as CPU cores on the server. I want to maximize the throughput of the consumers while ensuring that there are never more than one work item in process from any single producer. This is more complicated than the classic producer-consumer problem which I think assumes a single producer and no restriction on which work items may be in progress at any one time. I think the problem of multiple producers is relatively easily solved by enqueuing all work items on a single work queue protected by a critical section. I think the restriction on simultaneously processing work items from any single producer is harder because I cannot think of any solution that does not require each consumer to notify some kind of work dispatcher that a particular work item has been completed so as to lift the restriction on work items from that producer. In other words, if Consumer2 has just completed WorkItem42 from Producer53, there needs to be some kind of callback or notification from Consumer2 to a work dispatcher to allow the work dispatcher to release the next work item from Producer53 to the next available consumer (whether Consumer2 or otherwise). Am I overlooking something simple here? Is there a known pattern for this problem? I would appreciate any pointers.

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  • how to set static IP address in opensolaris

    - by pm100
    in closed solaris i knew how to do this. Edit /etc/inet/ipnodes, change /etc/defaultrouter, reboot in opensolaris there is not defaultrouter file. first thing I tried was System-admin-network switch to manual enter static address and netmask and gateway. press 'activate' "this interface cannot be activated". No error messages given. Close widget, open again. Now hangs for a minute and then closes try edit /etc/inet/ipnodes, reboot eth card not up. Network widget hangs then closes Works perfectly on DHCP

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  • How to get LAN ip to a variable in a Windows batch file

    - by Ville Koskinen
    I'm streaming audio from my Windows 7 laptop to a sound card attached to a router. I have a little batch script to start streaming. REM Kill any instances of vlc taskkill /im vlc.exe "c:\Program Files\VideoLAN\VLC\vlc.exe" <parameters to start http streaming> REM Wait for vlc TIMEOUT /T 10 REM start playback on router plink -ssh [email protected] -pw password killall -9 madplay plink -ssh [email protected] -pw password wget -q -O - http://192.1.159:8080/audio | madplay -Q --no-tty-control - & As you see the http stream is hard coded. It would be nice to get the address dynamically to reuse the script on other machines. Any ideas?

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  • Why Is Another Domain Resolving To My IP Address?

    - by Andrew
    I'm not really sure if this is something that I should worry about... I'm currently renting a dedicated server which is hosting a website I've created. The domain of the website was registered with GoDaddy. After submitting a sitemap to Google several months ago, I've noticed that another domain name is resolving to my IP address. This means that every page on my website is actually accessible from another domain. As far as I can tell, the other domain name is meaningless to me, so I'm not sure if this is something I should worry about or not. Is this a residual DNS record from another site that is probably no longer in use? Is it important from the standpoint of either security or SEO? My website is a .com which will later serve e-commerce purposes. The other domain has a top-level domain of st. It's the first one of those that I've encountered. Many thanks in advance!

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  • server host name and server ip address redirect (Debian, Apache)

    - by Matthias Reisner
    I have the following folder structure on my apache! .../var/www/www.x.tt/htdocs .../var/www/www.y.tt/htdocs I have defined a virtual host for each. So if I type in www.x.tt in my browser I get to the www.x.tt site. And the same for www.y.tt. But now my question! If I type in the server address or the server host name I get to the ../var/www directory but I want that the user will be redirected to the www.x.tt site! Do I have to create a new virtual host for this problem or is it also possible only to add a .htaccess Rule?! Thanks!

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  • What regular expression can I use to match an IP address?

    - by jennifer
    With the following grep syntax I want to match all IP address in a file (from a ksh script) grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' file The problem: It also matches words (IP) that have more then 4 octets: 1.1.1.1.1 or 192.1.1.1.160 How can I match a valid IP and only IP addresses with 4 octets? I can also use Perl – a one line syntax solution, if grep doesn't work.

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  • MPL with Commercial Use Restrictions (And Other Questions)

    - by PythEch
    So basicly I want to use MPL 2.0 for my open source software but I also want to forbid commercial use. I'm not a legal expert, that's why I'm asking. Should I use dual-license (MPL + Modified BSD License)? Or what does sublicensing mean? If I wanted to license my project, I would include a notice to the header. What should I do if want to dual-license or sublicense? Also, is it OK to use nicknames as copyright owners? I am not able to distribute additional files (e.g LICENSE.txt, README.md etc) with the software simply because it is just a JS script. By open-source I mean not obfuscated JS code. So in this case, am I forced to use GPL to make redistribution of obfuscated work illegal? Thanks for reading, any help is appreciated, answering all of the questions is not essential.

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  • How to set the IP address in a customized OpenWRT compilation

    - by Berdus
    I have been struggling today customizing OpenWRT. I checkout the stable using SVN, "make menuconfig" to customize the image, "make" it and run it on a router. Almost all my modifications work, except for the (Seemingly trivial) task of changing the default 192.168.1.1 address. I tried numerous files (scripts as well as config files) but I can't seem to change it (I can change it for a brief moment after boot using the "preinit" file, but after a few seconds it reverts to default). I suspect I should be setting it in the /etc/network file, but modifications there seem to be overwritten during boot. Maybe it has something to do with the br-lan interface? Does anybody have some thoughts on the subject? Thanks!

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  • Do all domains on the same shared hosting server have the same IP or ID

    - by silow
    Here's what I've got: siteA.com and siteB.com are hosted on hostgator. They're hosted on the same account of a shared hosting server (not VPS or dedicated). script.php is an external site that each of these 2 sites are accessing. I noticed that when siteA.com or siteB.com access the outside script.php, the script identifies them both as 1a.12.12ab.static.theplanet.com (apparently because hostgator uses theplanet.com servers). The fact that they're identified as the same value isn't surprising because after all they're hosted on the same account /home/user123/public_html. What I'm wondering about is how about other websites that are hosted on the same shared hosting server, but under other accounts. Basically other websites that are under another developer's control, but just happen to share the same hardware (hosting server). Do they also have the exact same identifier 1a.12.12ab.static.theplanet.com or that changes by account?

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  • FTP Logon Restrictions in IIS 8

    - by The Official Microsoft IIS Site
    One of the biggest asks from our customers over the years was to provide a way to prevent brute-force password attacks on the FTP service. On several of the FTP sites that I host, I used to see a large number of fraudulent logon requests from hackers that were trying to guess a username/password combination. My first step in trying to prevent these kinds of attacks, like most good administrators, was to implement strong password requirements and password lockout policies. This was a good first step...(read more)

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  • Ubuntu IP Configuration - multiple subnets & interfaces

    - by HaydnWVN
    Have a 'new' mailserver running postfix on Ubuntu. We are having some problems configuring the subnets & interfaces. Basically 2 subnets (.253. & .254.) need to be connected through the 3rd subnet (.252.) where the Router is residing. # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 10.62.254.199 netmask 255.255.0.0 network 10.62.254.0 broadcast 10.62.255.255 #gateway 10.62.252.138 # dns-* options are implemented by the resolvconf package, if installed dns-nameservers 10.62.252.138 dns-search ***.com auto eth1 iface eth1 inet static address 10.62.253.199 netmask 255.255.0.0 network 10.62.253.0 broadcast 10.62.255.255 #gateway 10.62.252.138 #dns-nameservers 10.62.254.199 10.62.253.199 10.62.252.199 dns-nameservers 10.62.252.138 dns-search ***.com auto eth2 iface eth2 inet static address 10.62.252.199 netmask 255.255.0.0 network 10.62.252.0 broadcast 10.62.255.255 gateway 10.62.252.138 #dns-nameservers 10.62.254.199 10.62.253.199 10.62.252.199 dns-search ***.com I have an external support company who are looking into this (they built and configured this server), but it's taking far too long... So I'm looking to highlight the mistake!

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