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• How do I collect SNMP readings from intermittently-connected sites?

  - by Luke404

  I am collecting SNMP data on-site for a number of systems, currently using Cacti. These systems are spread on a number of sites that aren't always connected to internet, but I also need to centralize the data on a single system (datacenter housed server) and get graphs out of it. If I directly poll remote systems with a centralized Cacti I'd loose data when a site is not connected to internet. I should record data on-site (I have a server at each site and I can run whatever I want on it) and then 'sync' everything to the central system. One hack could be a cacti or directly an rrdtool on site and then periodically rsync RRD data to the central Cacti system, but that doesn't sound like a 'clean' solution: every RRD would have to be defined at both places and rsync scripts setup with the specific file names. Can you suggest a better solution? Cacti is not a requirement but I'd like to use something like that on the central system. On-site systems need only to collect data I don't need to graph it there or manage users rights to view data and stuff like that, users will only access the centralized system.

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• SharePoint extranet security concerns, am I right to be worried?

  - by LukeR

  We are currently running MOSS 2007 internally, and have been doing so for about 12 months with no major issues. There has now been a request from management to provide access from the internet for small groups (initially) which are comprised of members from other Community Organisations like ours. Committees and the like. My first reaction was not joy when presented with this request, however I'd like to make sure the apprehension is warranted. I have read a few docs on TechNet about security hardening with regard to SharePoint, but I'm interested to know what others have done. I've spoken with another organisation who has already implemented something similar, and they have essentially port-forwarded from the internet to their internal production MOSS server. I don't really like the sound of this. Is it adviseable/necessary to run a DMZ type configuration, with a separate web front-end on a contained network segment? Does that even offer me any greater security than their setup? Some of the configurations from a TechNet doc aren't really feasible, given our current network budget. I've already made my concerns known to management, but it appears it will go ahead in some form or another. I'm tempted to run a completely isolated, seperate install just for these types of users. Should I even be concerned about it? Any thoughts, comments would be most welcomed at this point.

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• Having trouble mapping Sharepoint document library as a Network Place

  - by Sdmfj

  I am using Office 365, Sharepoint Online 2013. Using Internet Explorer these are the steps I have taken: ticked the keep me signed in on the portal.microsoftonline.com page. It redirects me to Godaddy login page because Office 365 was purchased through them. I have added these sites to trusted sites (as well as every page in the process) and chose auto logon in Internet explorer. Once on the document library I open as explorer and copy the address as text. I go to My Computer and right click to add a network place and paste in the document library address. It successfully adds the library as a network place 30% of the time. I can do this same process 3 times in a row and it will fail the first 2 times and then succeeds. It works for a little while and then I get an error that the DNS cannot be found. I need multiple users in our organization to be able to access this document library as if it was a mapped network drive on our local network. Is there an easier way to do this? I may just sync using the One Drive app but thought that direct access to the files without worrying about users keeping their files synced.

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• CentOS Latency High Troubleshooting

  - by Sarah Weinberger

  I have two CentOS servers connected via a 10 Gb fiber optic cable with a network emulator connected between them. All three units sit on a desk in the lab. There is also a regular 1 Gbit Ethernet cable connected to each of the machines, which provide internet connectivity. When I set the latency to something roughly below 30 ms, all is fine. When the latency gets to 70ms and above, and definitely 130ms, the network layer suspends. For instance, if I set the latency (delay) to 70ms, then launching TeamViewer (or any other application that uses network connectivity) never happens or does not work. There is no timeout message, simply no response. I have to lower to latency back down to zero to see any response and have the box start working. What is the problem and how would I go about fixing it? It seems to me some sort of setting in Linux causes one of the CentOS networking drivers to sit in an infinite loop or something. eth0 is the connection to the internet, all settings are default eth2 is the 10 Gbit fiber optic connection to the other computer with the MTU set to 9600 with all other parameters at default values.

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• DNS: how to get local server to superimpose results over authoritative server?

  - by growse

  I've got a domain for which the DNS I control, and is hosted on the internet. I also have a NAT'd internal network (192.168.0.0/24) which has internet access, and which I also control. On this internal network, I also have a DNS resolver. DNS software on both is PowerDNS. What I want to be able to do is for the DNS resolver on the internal network to be able to add/change records of queries and results that come down from the authoritative server. For example, the authoritative server might have a single record for animal.example.com: animal.example.com. IN AAAA 2001:140:283::1 However, I'd like it so that when internal clients do a dns lookup for animal.example.com, they might get back the following: animal.example.com. IN AAAA 2001:140:283::1 animal.example.com. IN A 192.168.0.2 Obviously, I could set up the internal DNS server to pretend to be authoritative for example.com, but that would require a fair bit of effort to keep the main DNS server and the internal DNS server in sync for the records which are the same between both. If the internal DNS server could somehow be made a slave of the main DNS server, but also have the provision to add its own results in, that would be ideal. Is this possible?

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• What is auto-mounting my media volume?

  - by user285277

  Something is repeatedly mounting my "media" share, doing something with it, then quietly un-mounting it with no notifications at the user level. from the little I can gleaned from the console messages below, I thought I'd managed to stop it, if not understand it last night when I followed instructions for deleting all traces of the Google Update Daemon. I've not been using any Google apps whatsoever, so I was surprised to see that in Console. What's more surprising, and perhaps a little distressing, is that the same thing occurred this evening, when the Google Daemon is long gone. I don't have that log because I can't recall precisely what time it occurred. I'll do a search and provide it if you wish, though. In the meantime, any help with this would be extremely appreciated. I've asked over at Apple Discussions but I think it might be a little deeper than those manning the boards this weekend are comfortable with. It's certainly beyond my meager skills. With apologies in advance if this is more lines thank you need. Please note that I've transformed the Google links a little because the forum here requires more reputation points before one can post more than two links. 12/27/13 10:47:31.000 PM kernel[0]: memorystatus_thread: idle exiting pid 53629 [distnoted] 12/27/13 10:48:10.433 PM com.apple.Preview.TrustedBookmarksService[53640]: Failed to resolve bookmark data at index: 0; not stale; error: The file doesn’t exist. 12/27/13 10:48:10.434 PM com.apple.Preview.TrustedBookmarksService[53640]: Failed to resolve bookmark data at index: 1; not stale; error: The file doesn’t exist. 12/27/13 10:48:10.950 PM com.apple.SecurityServer[17]: Session 103257 created 12/27/13 10:48:34.328 PM com.apple.Preview.TrustedBookmarksService[53640]: Failed to resolve bookmark data at index: 2; not stale; error: The file doesn’t exist. 12/27/13 10:48:34.000 PM kernel[0]: AFP_VFS afpfs_mount: /Volumes/Media Archive-1, pid 53641 12/27/13 10:48:34.000 PM kernel[0]: AFP_VFS afpfs_mount : succeeded on volume 0xffffff80d6355008 /Volumes/Media Archive-1 (error = 0, retval = 0) 12/27/13 10:49:32.000 PM kernel[0]: wlEvent: en0 en0 Link DOWN virtIf = 0 12/27/13 10:49:32.000 PM kernel[0]: AirPort: Link Down on en0. Reason 8 (Disassociated because station leaving). 12/27/13 10:49:32.000 PM kernel[0]: en0::IO80211Interface::postMessage bssid changed 12/27/13 10:49:33.681 PM configd[16]: network changed: v4(en0-:10.0.1.12) DNS- Proxy- SMB 12/27/13 10:49:33.697 PM configd[16]: network changed: DNS* Proxy 12/27/13 10:49:35.475 PM KernelEventAgent[57]: tid 00000000 received event(s) VQ_NOTRESP (1) 12/27/13 10:49:35.000 PM kernel[0]: ASP_TCP Disconnect: triggering reconnect by bumping reconnTrigger from curr value 0 on so 0xffffff802176b4a0 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect started /Volumes/Media Archive-1 prevTrigger 0 currTrigger 1 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: doing reconnect on /Volumes/Media Archive-1 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: posting to KEA EINPROGRESS for /Volumes/Media Archive-1 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: Max reconnect time: 600 secs, Connect timeout: 15 secs for /Volumes/Media Archive-1 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Media Archive-1 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect on /Volumes/Media Archive-1 failed 65. 12/27/13 10:49:35.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: sleep for 1 seconds and then try again 12/27/13 10:49:35.479 PM KernelEventAgent[57]: tid 00000000 type 'afpfs', mounted on '/Volumes/Media Archive-1', from '//Me@Capsule._afpovertcp._tcp.local/Media%20Archive', not responding 12/27/13 10:49:35.487 PM KernelEventAgent[57]: tid 00000000 found 1 filesystem(s) with problem(s) 12/27/13 10:49:36.692 PM com.bourgeoisbits.cloak.agent[14503]: NetworkProfile: (null), (null), (null) (Connected: NO, Airport: NO, Open: NO) [trusted] 12/27/13 10:49:36.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Media Archive-1 12/27/13 10:49:36.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect on /Volumes/Media Archive-1 failed 65. 12/27/13 10:49:36.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: sleep for 2 seconds and then try again 12/27/13 10:49:38.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Media Archive-1 12/27/13 10:49:38.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect on /Volumes/Media Archive-1 failed 65. 12/27/13 10:49:38.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: sleep for 4 seconds and then try again 12/27/13 10:49:41.000 PM kernel[0]: CODE SIGNING: cs_invalid_page(0x1000): p=53662[GoogleSoftwareUp] clearing CS_VALID 12/27/13 10:49:42.102 PM GoogleSoftwareUpdateDaemon[53663]: -[KeystoneDaemon logServiceState] GoogleSoftwareUpdate daemon (1.1.0.3659) vending: com.google.Keystone.Daemon.UpdateEngine: 2 connection(s) com.google.Keystone.Daemon.Administration: 0 connection(s) 12/27/13 10:49:42.113 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateEngine updateProductID:] KSUpdateEngine updating product ID: "com.google.Keystone" 12/27/13 10:49:42.116 PM GoogleSoftwareUpdateDaemon[53663]: -[KSCheckAction performAction] KSCheckAction checking 1 ticket(s). 12/27/13 10:49:42.121 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction performAction] KSUpdateCheckAction starting update check for ticket(s): {( <KSTicket:0x531870 productID=com.google.Keystone version=1.1.0.3659 xc=<KSPathExistenceChecker:0x5302d0 path=/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/> serverType=Omaha url=htt[PeeEs]://tools.google.com/service/update2 creationDate=2012-08-12 14:47:10 > )} Using server: <KSOmahaServer:0x534340 engine=<KSDaemonUpdateEngine:0x52e530> params={ EngineVersion = "1.1.0.3659"; ActivesInfo = { "com.google.talkplugin" = { LastRollCallPingDate = 2013-10-06 07:00:00 +0000; }; "com.google.Keystone" = { LastRollCallPingDate = 2013-10-06 07:00:00 +0000; LastActivePingDate = 2013-10-06 07:00:00 +0000; LastActiveDate = 2013-12-28 03:49:42 +0000; }; "com.google.picasa" = { LastActiveDate = 2012-08-29 10:15:42 +0000; }; }; UserInitiated = 0; IsSystem = 1; OmahaOSVersion = "10.8.5_i486"; Identity = KeystoneDaemon; AllowedSubdomains = ( ".omaha.sandbox.google.com", ".tools.google.com", ".www.google.com", ".corp.google.com" ); } > 12/27/13 10:49:42.130 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction performAction] KSUpdateCheckAction running KSServerUpdateRequest: <KSOmahaServerUpdateRequest:0x1a31a90 server=<KSOmahaServer:0x534340> url="htt[PeeEs]://tools.google.com/service/update2" runningFetchers=0 tickets=1 activeTickets=1 rollCallTickets=1 body= <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <o:gupdate xmlns:o="htt[Pee]://www.google.com/update2/request" protocol="2.0" version="KeystoneDaemon-1.1.0.3659" ismachine="1"> <o:os platform="mac" version="MacOSX" sp="10.8.5_i486"></o:os> <o:app appid="com.google.Keystone" version="1.1.0.3659" lang="en-us" installage="502" brand="GGLG"> <o:ping r="82" a="82"></o:ping> <o:updatecheck></o:updatecheck> </o:app> </o:gupdate> > 12/27/13 10:49:42.291 PM GoogleSoftwareUpdateDaemon[53663]: -[KSOutOfProcessFetcher(PrivateMethods) helperDidTerminate:] The Internet connection appears to be offline. [NSURLErrorDomain:-1009] 12/27/13 10:49:42.291 PM GoogleSoftwareUpdateDaemon[53663]: -[KSServerUpdateRequest(PrivateMethods) fetcher:failedWithError:] KSServerUpdateRequest fetch failed. (productIDs: com.google.Keystone) [com.google.UpdateEngine.CoreErrorDomain:702 - 'htt[PeeEs]://tools.google.com/service/update2'] (The Internet connection appears to be offline. [NSURLErrorDomain:-1009]) 12/27/13 10:49:42.292 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction(PrivateMethods) finishAction] KSUpdateCheckAction found updates: {( )} 12/27/13 10:49:42.295 PM GoogleSoftwareUpdateDaemon[53663]: -[KSPrefetchAction performAction] KSPrefetchAction no updates to prefetch. 12/27/13 10:49:42.295 PM GoogleSoftwareUpdateDaemon[53663]: -[KSMultiUpdateAction performAction] KSSilentUpdateAction had no updates to apply. 12/27/13 10:49:42.296 PM GoogleSoftwareUpdateDaemon[53663]: -[KSMultiUpdateAction performAction] KSPromptAction had no updates to apply. 12/27/13 10:49:42.299 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateEngine(PrivateMethods) updateFinish] KSUpdateEngine update processing complete. 12/27/13 10:49:42.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Media Archive-1 12/27/13 10:49:42.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect on /Volumes/Media Archive-1 failed 65. 12/27/13 10:49:42.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: sleep for 8 seconds and then try again 12/27/13 10:49:43.152 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateEngine updateAllProducts] KSUpdateEngine updating all installed products. 12/27/13 10:49:43.153 PM GoogleSoftwareUpdateDaemon[53663]: -[KSCheckAction performAction] KSCheckAction checking 2 ticket(s). 12/27/13 10:49:43.158 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction performAction] KSUpdateCheckAction starting update check for ticket(s): {( <KSTicket:0x18367a0 productID=com.google.Keystone version=1.1.0.3659 xc=<KSPathExistenceChecker:0x1837e10 path=/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/> serverType=Omaha url=htt[PeeEs]://tools.google.com/service/update2 creationDate=2012-08-12 14:47:10 >, <KSTicket:0x1834750 productID=com.google.talkplugin version=4.7.0.15362 xc=<KSPathExistenceChecker:0x1833890 path=/Library/Application Support/Google/GoogleTalkPlugin.app> serverType=Omaha url=htt[PeeEs]://tools.google.com/service/update2 creationDate=2012-08-12 14:47:10 > )} Using server: <KSOmahaServer:0x52e930 engine=<KSDaemonUpdateEngine:0x52e530> params={ EngineVersion = "1.1.0.3659"; ActivesInfo = { "com.google.talkplugin" = { LastRollCallPingDate = 2013-10-06 07:00:00 +0000; }; "com.google.Keystone" = { LastRollCallPingDate = 2013-10-06 07:00:00 +0000; LastActivePingDate = 2013-10-06 07:00:00 +0000; LastActiveDate = 2013-12-28 03:49:42 +0000; }; "com.google.picasa" = { LastActiveDate = 2012-08-29 10:15:42 +0000; }; }; UserInitiated = 0; IsSystem = 1; OmahaOSVersion = "10.8.5_i486"; Identity = KeystoneDaemon; AllowedSubdomains = ( ".omaha.sandbox.google.com", ".tools.google.com", ".www.google.com", ".corp.google.com" ); } > 12/27/13 10:49:43.159 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction performAction] KSUpdateCheckAction running KSServerUpdateRequest: <KSOmahaServerUpdateRequest:0x53a210 server=<KSOmahaServer:0x52e930> url="htt[PeeEs]://tools.google.com/service/update2" runningFetchers=0 tickets=2 activeTickets=1 rollCallTickets=2 body= <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <o:gupdate xmlns:o="htt[Pee]://www.google.com/update2/request" protocol="2.0" version="KeystoneDaemon-1.1.0.3659" ismachine="1"> <o:os platform="mac" version="MacOSX" sp="10.8.5_i486"></o:os> <o:app appid="com.google.Keystone" version="1.1.0.3659" lang="en-us" installage="502" brand="GGLG"> <o:ping r="82" a="82"></o:ping> <o:updatecheck></o:updatecheck> </o:app> <o:app appid="com.google.talkplugin" version="4.7.0.15362" lang="en-us" installage="502" brand="GGLG"> <o:ping r="82"></o:ping> <o:updatecheck></o:updatecheck> </o:app> </o:gupdate> > 12/27/13 10:49:43.243 PM GoogleSoftwareUpdateDaemon[53663]: -[KSOutOfProcessFetcher(PrivateMethods) helperDidTerminate:] The Internet connection appears to be offline. [NSURLErrorDomain:-1009] 12/27/13 10:49:43.243 PM GoogleSoftwareUpdateDaemon[53663]: -[KSServerUpdateRequest(PrivateMethods) fetcher:failedWithError:] KSServerUpdateRequest fetch failed. (productIDs: com.google.Keystone, ... (2)) [com.google.UpdateEngine.CoreErrorDomain:702 - 'htt[PeeEs]://tools.google.com/service/update2'] (The Internet connection appears to be offline. [NSURLErrorDomain:-1009]) 12/27/13 10:49:43.244 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateCheckAction(PrivateMethods) finishAction] KSUpdateCheckAction found updates: {( )} 12/27/13 10:49:43.247 PM GoogleSoftwareUpdateDaemon[53663]: -[KSPrefetchAction performAction] KSPrefetchAction no updates to prefetch. 12/27/13 10:49:43.248 PM GoogleSoftwareUpdateDaemon[53663]: -[KSMultiUpdateAction performAction] KSSilentUpdateAction had no updates to apply. 12/27/13 10:49:43.248 PM GoogleSoftwareUpdateDaemon[53663]: -[KSMultiUpdateAction performAction] KSPromptAction had no updates to apply. 12/27/13 10:49:43.250 PM GoogleSoftwareUpdateDaemon[53663]: -[KSUpdateEngine(PrivateMethods) updateFinish] KSUpdateEngine update processing complete. 12/27/13 10:49:45.570 PM GoogleSoftwareUpdateDaemon[53663]: -[KeystoneDaemon logServiceState] GoogleSoftwareUpdate daemon (1.1.0.3659) vending: com.google.Keystone.Daemon.UpdateEngine: 1 connection(s) com.google.Keystone.Daemon.Administration: 0 connection(s) 12/27/13 10:49:50.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Media Archive-1 12/27/13 10:49:50.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: connect on /Volumes/Media Archive-1 failed 65. 12/27/13 10:49:50.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: sleep for 10 seconds and then try again 12/27/13 10:49:53.828 PM KernelEventAgent[57]: tid 00000000 unmounting 1 filesystems 12/27/13 10:49:53.000 PM kernel[0]: AFP_VFS afpfs_unmount: /Volumes/Media Archive-1, flags 524288, pid 57 12/27/13 10:49:54.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: get the reconnect token 12/27/13 10:49:54.000 PM kernel[0]: AFP_VFS afpfs_DoReconnect: GetReconnectToken failed 32 /Volumes/Media Archive-1 12/27/13 10:49:54.000 PM kernel[0]: AFP_VFS afpfs_unmount : afpfs_DoReconnect sent signal for unmount to proceed 12/27/13 10:50:12.104 PM GoogleSoftwareUpdateDaemon[53663]: -[KeystoneDaemon main] GoogleSoftwareUpdateDaemon inactive, shutdown. 12/27/13 10:50:29.396 PM Dock[93157]: no information back from LS about running process

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• IPSec VPN using ZyWALL IPSec VPN Client: unable to connect from some providers

  - by Reshi

  I'm trying to configure an IPSec VPN to one company from my home. The company has SANET internet service provider. I was able to create a VPN connection from another company that has the same internet service provider. The problem begins when I'm trying to connect from another ISP like Orange or Telekom. Here is the log from ZyWall: 20120816 10:06:18:359 Default (SA Gateway-P1) SEND phase 1 Main Mode [SA] [VID] [VID] [VID] [VID] [VID] 20120816 10:06:18:375 Default (SA Gateway-P1) RECV phase 1 Main Mode [SA] [VID] [VID] [VID] [VID] [VID] [VID] [VID] [VID] 20120816 10:06:18:390 Default (SA Gateway-P1) SEND phase 1 Main Mode [KEY_EXCH] [NONCE] [NAT_D] [NAT_D] 20120816 10:06:18:718 Default (SA Gateway-P1) RECV phase 1 Main Mode [KEY_EXCH] [NONCE] [NAT_D] [NAT_D] 20120816 10:06:18:734 Default (SA Gateway-P1) SEND phase 1 Main Mode [HASH] [ID] 20120816 10:06:18:750 Default (SA Gateway-P1) RECV phase 1 Main Mode [HASH] [ID] 20120816 10:06:18:750 Default phase 1 done: initiator id [email protected], responder id 111.112.113.114 20120816 10:06:18:765 Default (SA Gateway-Tunnel-P2) SEND phase 2 Quick Mode [HASH] [SA] [KEY_EXCH] [NONCE] [ID] [ID] 20120816 10:06:18:953 Default (SA Gateway-Tunnel-P2) RECV phase 2 Quick Mode [HASH] [SA] [KEY_EXCH] [NONCE] [ID] [ID] 20120816 10:06:18:953 Default (SA Gateway-Tunnel-P2) SEND phase 2 Quick Mode [HASH] 20120816 10:06:48:968 Default (SA Gateway-P1) SEND Informational [HASH] [NOTIFY] type DPD_R_U_THERE 20120816 10:06:48:984 Default (SA Gateway-P1) RECV Informational [HASH] [NOTIFY] type DPD_R_U_THERE_ACK ZyWall informs me that the tunnel was opened. But I can't ping or access any computer in the network. My configuration at home: ISP: Orange Optical connection Terminal: GPON OPTICAL NETWORK TERMINAL G-25E Router: TPLink TL-WR941N --> SPI Firewall Enabled --> VPN - IPSEC Passthrough Enabled I was wondering if the problem could not be on ISP side (that he blocks somehow this connection because in SANET ISP it worked fine) or even in my terminal or router. What could I check? Where could be the problem ?

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• Best all in one linux based proxy,firewall, dhcp and wins server.

  - by BeStRaFe

  I help to run a lan in Sydney. We have a need for a proxy/gateway solution to allow those pesky games that require internet to work. I have been doing this with an ISA server and it has worked quite well. However now i wish to port this over to run on the same hardware as our cacti / nagios box under a vmware VM. ISA server is horridly nad due to the massive ram and i/o requirement for something is basically port blocking and handing out IP's. The needs are as follows. 1. DHCP 2. WINS (otherwise network devices fight over who is the WINS master) 3. Filtering based in PORT for outbound traffic. 4. Ability to whitelist IP/MAC's for internet access. 5. Web Interface. I had been thinking to use PFSENSE however there is no option for a WINS server and i cbf working my way around bsd.

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• VPN messes up DNS resolution

  - by user124114

  After connecting with the Kerio VPN client (OS X Leopard) to a server, the internet (~web browsing) stopped working for the client. After poking around, the issue seems to be bad DNS server (i.e., entering IPs directly works). After disconnecting from the VPN, the invalid DNS server disappears from scutil --dns and all's well again. Now, I don't understand why OS X on the client even changes the DNS settings -- internet should be routed through a different interface, through the default gateway, not through the VPN. Questions: By what mechanism does connecting the VPN client change the "default" DNS server? How can I stop the VPN client from changing routing/DNS rules? Where is this stuff stored/modified? Before VPN: $ scutil --dns DNS configuration resolver #1 nameserver[0] : 10.66.77.1 # <---- default gateway = home router; all good order : 200000 resolver #2 domain : local options : mdns timeout : 2 order : 300000 ... VPN connected: $ scutil --dns DNS configuration resolver #1 nameserver[0] : 192.168.1.1 # <--- rubbish nameserver[1] : 192.168.2.1 order : 200000 resolver #2 domain : local options : mdns timeout : 2 order : 300000 ... The VPN doesn't appear among $ networksetup -listallnetworkservices.

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• Configure Domino to use SMTP routing and hMailServer

  - by Sébastien Lachance

  I have been trying for a couple of days to set up a Domino 8.5 server. Basically, I want everything to be run inside a local network. Right now I can send email to other user in the Domino directory without any mail address. I am pretty new to all this stuff, so maybe the answer will be really obvious. What I need to do is be able to send a mail from somewhere else to a domino user that will be redirected to his account. On the Domino server, I also have hMailServer installed on port 25. I configured Domino to use port 26. I followed those step to get where I am now. -I have set the Fully qualified Internet host name to "preview.notes". -Smtp Listener task changed to Enabled to turn on the Listener so that the server can receive messages routed via SMTP routing -Setting up SMTP routing within the local Internet domain (http://www.h2l.com/help/help85%5Fadmin.nsf/f4b82fbb75e942a6852566ac0037f284/7f9738a49efc4f58852574d500097b01?OpenDocument) -I modified the person to use the [email protected] address. -I'm using the hMailServer (which have the local "preview.local" domain name) to send mail to [email protected]. When sending mail I got an error telling that the DNS is not set up correctly. Is using the Domino Smtp server instead of hMailServer will solve the problem? I can Telnet the Domino Smtp Server.

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• Server 2003 PDC DNS not working..Failover server is...

  - by Seth

  In the midst of trying to utilize proc power, i create a fault tolerant DNS server a while ago. Since, Ive been trying to add another controller for exchange. So I thought I would revert back to a single primary DNS for the meantime and now Im balancing on a thread. The server i thought I uninstalled DNS, is still acting as DNS. And now the PDC does not resolve. Can anybody walk me through, Im overwhelmed and cant think straight... Im afraid if anyone restarts their machine they wont have internet. Update Ok so from the beginning. I was configuring Exchange on a new server 2008. How it happened I dont know, but it started to not resolve DNS. (exclamation mark on NIC) even though everything was static. So ultimately I decided to remove the server from the problem, because I noticed DNS was in disarray if I used the DNS IP of the first server. This is when I tested with nslookup on each DNS server. I had uninstalled DNS from the second server, but nslookup was still resolving with that IPaddress, which has me all wound up cause I dont understand. So, since the first DNS server isn't resolving, Im assuming if the second one isnt configured right I'll loose internet. Im just confused and dont know where to start troubleshooting...

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• Connect to WEP Wireless Network by command line on Ubuntu

  - by Tim

  Hi, I am a newbie to both network and Linux. I am now trying to connect to a WEP wireless network by command line on my Ubuntu 8.10, because the Network Manager does not support 64 bit WEP. (1) I firstly bring down the Network Manager and then try to connect to a wireless network, whose essid is candy and password is 5673212741. But it fails as shown in the following. I wonder why and how to do it correctly? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwconfig wlan0 essid candy opendo iwconfig wlan0 key 18018ce78e open $ sudo iwconfig wlan0 key 5673212741 open $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 9971 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 No DHCPOFFERS received. No working leases in persistent database - sleeping. $ ping www.bbc.co.uk ping: unknown host www.bbc.co.uk (2) A less important question: why the scan for wireless networ does not work after I bring down the Network Manager? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down Thanks and regards!

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• Connect to Nonencrypted Wireless Network Using Ubuntu Commands

  - by Tim

  I failed to connect to an open i.e. nonencrypted wireless network using Ubuntu command lines. Here is what I did: $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo /sbin/ifconfig wlan0 up $ sudo iwconfig wlan0 essid "Cavalier High-Speed 866-4-CAVTEL" $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 10812 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6 No DHCPOFFERS received. Trying recorded lease 192.168.1.67 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms Trying recorded lease 192.168.1.45 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms No working leases in persistent database - sleeping. $ sudo /sbin/iwconfig wlan0 wlan0 IEEE 802.11bg Mode:Managed Frequency:2.422 GHz Access Point: Not-Associated Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Encryption key:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I was wondering what the problem is and how I can do it right? Thanks and regards!

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• Debian, 2 NICs load-balancing or agregating with one same gateway

  - by pouney

  Hi, I have one server, with double NICs connected to one switch with the same gateway. Behind the switch we have internet. |Debian| - eth0 - switch - internet - eth1 - same I don't understand how to load-balancing between eth0 and eth1. The inbound/outbound traffic always use eth1. This is the config: # The primary network interface allow-hotplug eth0 auto eth0 iface eth0 inet static address 192.168.248.82 netmask 255.255.255.240 network 192.168.248.80 broadcast 192.168.248.95 gateway 192.168.248.81 allow-hotplug eth1 auto eth1 iface eth1 inet static address 192.168.248.83 netmask 255.255.255.240 network 192.168.248.80 broadcast 192.168.248.95 gateway 192.168.248.81 Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.248.80 0.0.0.0 255.255.255.240 U 0 0 0 eth1 192.168.248.80 0.0.0.0 255.255.255.240 U 0 0 0 eth0 0.0.0.0 192.168.248.81 0.0.0.0 UG 0 0 0 eth1 0.0.0.0 192.168.248.81 0.0.0.0 UG 0 0 0 eth0 Ips aren't real, it's just for the example. Anybody have an idea on correct routing to use eth0 on 192.168.248.82 and eth1 on 192.168.248.83 ? I have many example for multiple gateway but here it's the same. Thanks all. Regards

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• Single m0n0wall - Two LAN Subnets - How To Setup

  - by SnAzBaZ

  I have two LAN subnets that I need to link together they are 192.168.4.0/24 and 192.168.5.0/24 There is a m0n0wall running on 192.168.4.1. It's LAN connection goes out to our network switch, and it's WAN port goes out to our ADSL modem. WAN is connected via PPPoE. The 192.168.4.0 subnet contains all of our office workstations. The 192.168.5.0 subnet contains development servers and test machines that need to obtain internet access and be "managed" by computers on the 192.168.4.0 subnet, but need to be on their own subnet as well. I have a Draytek 2820N configured on 192.168.5.1 with it's WAN2 port configured as 192.168.4.25 and a default gateway of 192.168.4.1. Machines on the 5.0 subnet can connect to the internet via the m0n0wall just fine. I configured a static route on the m0n0wall LAN interface, Network 192.168.5.0/24 and Gateway 192.168.4.25. Machines on the 5.0 subnet can ping machines on the 4.0 network but the reverse does not work. I configured a new firewall rule on the m0n0wall that allows any traffic on the LAN interface with a source IP of 192.168.4.25 to be allowed. The DrayTek firewall is currently configured to pass all traffic regardless. When I try to ping a machine in the 5.0 subnet from 4.0 I see this in my m0n0wall log: BLOCK 14:45:27.888157 LAN 192.168.4.25 192.168.4.37, type echoreply/0 ICMP So the reply is being sent from the 5.0 subnet but is not being allowed to reach my workstation because the firewall is blocking it. Why is the firewall blocking it ? I hope the explanation of my network is clear, please ask if you require further clarification. Thank you.

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• Router startup problem

  - by gfmoz

  I have problems with my Tilgin Vood Router. As I try to start my router by turning the power on (captain obvious), it generally doesn't work the first 3-4 times. This is getting very annoying. Five minutes after turning the power on the router's signal LEDs don't blink in the way they should do in a connected state. I can connect to my routers web configuration interface through my PC connected to it via LAN though I can't access the internet. It usually takes the router five minutes to get to the point where it should be connected to the internet but as it doesn't work the first times. So I turn on my router 3-5 times, let him work 5 minutes and then suddenly, after turning the pow*emphasized text*er off and on again it all works. The problem is regarding startup only, when I get it to work everything runs as smooth as a 1980-s text-based C++ game on a 3ghz machine. I also have to restart my PC too in order for everything to work. - How can I solve this problem? - Just leave the router turned on all time? I prefer a daily IP switch, though. - May the problem have something to do with my PC? There is another one connected to the router too and it doesn't work there either.

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• How to share text, pictures and video to restricted set of users

  - by joaoc

  I want to share pictures and videos of my kid growing up but I don't want it to be open to the public. I just want me and my wife to be able to add material and then share with grandparents and friends who would be given a username/password or some other solution that authenticates them. This content would preferably be available remotely over the internet or downloaded periodically to the allowed viewers computers. The second option most likely means they would have to install a client, which I am not too fond of doing (I would have to ask them to install it, help configure for different platforms, ...) I'm at the start but I would like software that also allows export of the data (if one day I want to migrate to a different solution). Folder sharing I don't know if Windows folder sharing is reliable, robust and safe enough to share over the internet. Dropbox could be a software solution, but it's limited to 2GB and requires receivers to also install and configure software. A folder is just a collection of files, so it would be harder to keep them organized with text describing the pictures/video Email I could email the content every now and then but videos are almost always too big to go as attachments This would also not provide a history of updates to anyone just recently joining in Are there other solutions to achieve this? NOTE: I also thought that software to run a local or remote blog could be an option but we aren't allowed to ask those questions on superuser because one admin doesn't like cloud-computing questions. But if you do think it's the best approach and can suggest a solution, do state it in the answers anyway!

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• VLAN for WiFi traffic separation (new to VLANing)

  - by Philip

  I run a school network with switches in different departments. All is routed through to a central switch to access the servers. I would like to install WiFi access points in the different departments and have this routed through the firewall (an Untangle box that can captive-portal the traffic, to provide authentication) before it gets onto the LAN or to the Internet. I know that the ports that the APs connect to on the relevant switches need to be set to a different VLAN. My question is how do I configure these ports. Which are tagged? Which are untagged? I obviously don't want to interrupt normal network traffic. Am I correct in saying: The majority of the ports should be UNTAGGED VLAN 1? Those that have WiFi APs attached should be UNTAGGED VLAN 2 (only) The uplinks to the central switch should be TAGGED VLAN 1 and TAGGED VLAN 2 The central switch's incoming ports from the outlying switches should also be TAGGED VLAN 1 and TAGGED VLAN 2 There will be two links to the firewall (each on its own NIC), one UNTAGGED VLAN 1 (for normal internet access traffic) and one UNTAGGED VLAN 2 (for captive portal authentication). This does mean that all wireless traffic will be routed over a single NIC which will also up the workload for the firewall. At this stage, I'm not concerned about that load.

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• How to connect 2 routers (Asmax and D-link)

  - by piobyz

  I just bought a new router, D-link DSL 2641B and want to connect it to another one, provided by my ISP, Asmax AR 804MP. Previously, I had Linksys WRT350N, and there was no problem, while I had Ethernet cable plugged in to one of LAN ports in Asmax and INTERNET(RJ45) port in Linksys, connection used PPPoE protocol -- worked OK. D-link has DSL(RJ11) port (which I don't want to use as Asmax replacement, while there is a separate Ethernet cable with a TV plugged to Asmax, which I don't want to configure from scratch on D-link). How should I connect my new D-link to work with Asmax? Via DSL port? Via one of the LAN ports (in which case I probably should change the purpose of this port in the config, I guess?). I tried connecting D-link both ways: LAN(ASMAX) to LAN(DLINK) LAN(ASMAX) to DSL(DLINK) (using RJ11 - RJ45 cable) I hope there is some setting in the DLINK's config that I overlooked. I haven't tried to see what's in ASMAX's config, but I guess I don't need to change anything there, while Linksys worked just fine? The only difference I see, is that D-link has RJ11 DSL port as WAN, and Linksys has RJ45 (called by them INTERNET) as a main WAN port.

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• Route specific network traffic through vpn in virtualbox guest

  - by Sander

  I am running OSX with a windows server 2008 guest in Virtualbox. My goal is to route some of the network traffic in the host through the server guest. This is because the win2008 server has a VPN connection to my workplace using a Smartcard solution which can not operate on OSX. My current set-up is like this: OSX (Host): connected to the internet via en01 Win2008 (Guest): connected to the internet using NAT (lan1 in guest) has a SSTP VPN connection to my workplace is connected to the guest using an Host Only Adapter vboxnet0 (LAN2 in guest) The important part is about the host (OSX). Primarily I want all network traffic to just go through en01. However, all traffic which can only be accessed through the VPN must go through the guest and through the VPN. I have one specific FQDN which can only be accessed through the VPN (say corp.mycompany.com). I do not know much about networking. I thought I would be able to get it to work by bridging together LAN2 and LAN1 but this didn't seem to work this: http://archives.aidanfindlater.com/blog/2010/02/03/use-vpn-for-specific-sites-on-mac-os-x/ using a loopback adapter on WinXP (when I did not have win2008 yet, but this doesn't work because I can't create a PPTP connection) And I've also read about Routing and Remote Access but I have no idea on how to use this. Can someone help me in the right direction?

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• [tcpdump] Proxy delegate refusing connexion ?

  - by simtris

  Hi guys, I'm a little disapointed ! My aim was to build a VERY simple smtp proxy under debian to handle mail from a port (51234) and forward it to the standard 25 port. I compile and install a "delegate" witch can handle easily that. It's working very well like that : delegated SERVER="smtp://anotherSmtpServer:25" -P51234 The strange thing is, it's working on my virtual test machine and on the dedicated server in local but I can't manage to use it trought internet. I test it like that. telnet [mySrv] 51234 Of course, no firewal, no deny host, no ined/xined, the service delegated is listening on the right port ... 2 clues : The port is answering trought internet with nmap as "51234/tcp open tcpwrapped" have a look at the tcpdump following : 22:50:54.864398 IP [myIp].1699 [mySrv].51234: S 2486749330:2486749330(0) win 65535 22:50:54.864449 IP [mySrv].51234 [myIp].1699: S 2486963525:2486963525(0) ack 2486749331 win 5840 22:50:54.948169 IP [myIp].1699 [mySrv].51234: . ack 1 win 64240 22:50:54.965134 IP [mySrv].43554 [myIp].auth: S 2485396968:2485396968(0) win 5840 22:50:55.243128 IP [myIp] [mySrv]: ICMP [myIp] tcp port auth unreachable, length 68 22:50:55.249646 IP [mySrv].51234 [myIp].1699: F 1:1(0) ack 1 win 46 22:50:55.309853 IP [myIp].1699 [mySrv].51234: . ack 2 win 64240 22:50:55.310126 IP [myIp].1699 [mySrv].51234: F 1:1(0) ack 2 win 64240 22:50:55.310137 IP [mySrv].51234 [myIp].1699: . ack 2 win 46 The part "auth" seems suspect to me but didn't ring a bell. I could certaily do with some help. Thx a lot !

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• Ubuntu networking issue: two specific machines cannot browse web while connected to network at the same time.

  - by jensendarren

  I have setup a secure wireless network which works very well except for two laptops running Ubuntu 10.10 that can't access the Internet via a browser at the same time. They can both ping sites, wget sites, use skype but when using a browser the page never loads (in Firefox the status bar just sits there saying "Connecting" until it times out.) Here is what we have tried so far (nothing has fixed this issue): OpenDNS Restart networking services Using wired connection rather than wireless Removing all other nodes from the network except the two machines that have this issue Swapped out the router Factory reset the router Reformatted one of the machines and re-installed Ubuntu 10.10 Other things that we have checked: The two machines can connect simultaneously without any issues to other wireless networks in different locations (say in an Internet Cafe or another office) The two machines have unique IP addresses The two machines have unique MAC addresses The two machines can communicate on the network using Skype, wget, ping etc We are not using a proxy on either machine FYI: I have attached output from wireshark. For the test we turned both machines on and pointed them both to the same website. The content loaded on one and not the other. Here is the output from wireshark- (speedyshare.com/files/26228631/machine_output_1 && speedyshare.com/files/26228649/machine2). As you can see the first one worked, the second one didn't. I don't fully understand the output and would appreciate if someone could shed some light on what might be causing this and how we can fix it! Many thanks! Darren

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• MacBook Air Keeps dropping Wi-Fi

  - by Robert Patrick

  So my MacBook Air keeps dropping Wi-Fi for some reason. It happens ONLY on my home network, and ONLY to my computer. I'm using a Linksys WRT54G router. I'm the only Mac on the network. Every other Wi-Fi network is perfectly fine, and every other computer on this network is fine. Many things can happen. It could say it's connected, but not be able to access the internet (whether it tells me that there's no internet access or not). It may just drop Wi-Fi altogether, and refuse to connect. Generally, if I unplug the router and plug it back in, it's all good. It also works if I restart my computer. This happens multiple times a day. Yesterday I did everything I know to get it to connect (restart router many times, restart my MacBook), and nothing worked. Eventually it just magically worked. How can I stop this from happening? We got a notice from Comcast a while ago saying that a bot called DNS Changer was detected on one or more machines on the network. I'm assuming that this can't be me, right?

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• Manual NAT on Checkpoint (Redirect all http requests to a local web server)

  - by B. Kulakli

  We have a proxy server in our internal network and I want to redirect all internet http requests to a web server in local network. It'll be like a Network Billboard that says "No direct connection is available. Set up your proxy etc." For example: A user starts the computer Opens the browser Tries to open www.google.com Should see web server output on local network Tries another web site on internet Should see web server output on local network Sets up proxy Tries to connect to a web site Web site should be loaded I have added a simple manual NAT rule to address translation in Checkpoint firewall but it simply does not work. Here is my address translation rule Source Destination Service T.Source T.Destination T.Service MY_PC A_GOOGLE_IP ALL ORIGINAL INT_WEB_SRV ORIGINAL Then when I ping A_GOOGLE_IP, replies come from INT_WEB_SRV, as I expected. However, when I try to connect A_GOOGLE_IP from browser (http://A_GOOGLE_IP), no replies come from SYN_SENT and falls into timeout. When I look at the firewall log of INT_WEB_SRV, I can see the incoming connection requests from MY_PC is accepted and NO denies. By the way, there is no problem to see INT_WEB_SRV (http://INT_WEB_SRV) from browser. My understanding is, my NAT rule at checkpoint NGX R60 does not include return packets. I definitely need some help.

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• Sql Server 2005 Connection Unstable When Sharing Connection

  - by intermension

  When connecting to a customers hosting service via Sql Server Management Studio on an internet connection that also has other activity on it, the Sql Server connection to the hosting service is often dropped. An obvious work around to this problem is to NOT have additional traffic on the connection but it still begs the question "Why the Sql Server connection is so unstable?". If there is, for arguments sake, 100kb of bandwidth and a couple of downloads running that are being serviced at 35kB each then there is 30kB bandwidth spare capacity. If a 3rd download is started, that can be serviced at 35kB by the server, it will top out at 30kB and leave zero spare capacity. This is fine and all downloads get along nicely. However it seems that with Sql Server connections it doesn't matter if there is spare bandwidth. Sql Server regularly times out if there is any additional activity on the connection even if i have 1024kB spare bandwidth capacity. This has been experienced across different customer hosting providers over the years and so the assumption is that it's Sql Server related. Why does Sql Server (apparently) require exclusive access to the internet connection in order to maintain a connection... even if that connection has plenty of spare capacity over and above any additional activity on the connection?

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