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• Command-line sort and copy text files to one single file renders an error

  - by user169997

  I stumbled on question 217394 which explains how to copy files sorted alphabetically into one single file. Trying to implement the command myself rendered the following error message: The system cannot find the file specified. The command I am trying to run is here: for /f %i in ('dir /a-d /o-n /b O:\OrdersExport\Order*.txt') do @type %i C:\Users\Admin\Documents\OrderImport.txt The error does not appear if I browsed to the folder in question first: C:\O: C:\cd OrdersImport I simply want one line to copy from destination to that single file. By the way, if it matters, O: is a mapped folder over network

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• SuperMicro IPMI through OpenBSD PF Firewall

  - by thelsdj

  I'm trying to access a SuperMicro IPMI card that is behind an OpenBSD bridged firewall. A couple pieces of information: The OpenBSD firewall itself has a SuperMicro IPMI that I can access across the internet. The IPMI I'm trying to reach can be reached from behind the firewall. My gateway does arp request the IPMI and it does appear to respond (this is from the external interface of the firewall) 16:57:45.548892 arp who-has ipminame tell gwname 16:57:45.549500 arp reply ipminame is-at ipmimac But when I make a request to the IPMI IP from outside the firewall the external interface of the firewall shows no traffic with the IPMI ip as its destination. Any idea what might be causing this problem? Is there something about IPMI traffic that my gateway wouldn't like (the gateway is provided by my colocation provider so I can't easily debug it).

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• Linking FreeNAS Boxes

  - by John

  I have two different FreeNAS boxes that are being used for storage. It is possible to link them in a manner that the linked connection can be presented as a single storage destination for clients? For example, I have one FreeNAS installation that has 6 TB of storage and another one that has 4 TB of storage. I would like to be able to present or have a single mapped drive for clients that would be able to span across both of them; however, the client would only see it as one drive. Is this possible? If not, is there a different way I should be approaching this problem? Is there a different OS distribution that would work better for this?

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• What's the easiest way to migrate one Mac OSX volume to another

  - by teabot

  I want to move a volume from a smaller drive to a larger unformatted one. What is the best way to achieve this? Ideally I'd like the new volume to have the same name as the older volume as it contains user accounts, and is a destination of various symlinks that I have on other volumes. Update: I used Carbon Copy Cloner in the end and it worked perfectly. I was able to simply rename the new volume in Finder to the same name as the old volume and then powered down and removed the old drive on which the volume lived. When I restarted, the new volume seamlessly worked in place of the old volume.

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• Unable to log into Ubuntu

  - by Rodnower

  I have Ubuntu 12.04.1. Last time I did nothing especial, but suddenly some problem appear: I have a login screen (using lightdm), when I attempt a login, I get a console session and returned to the login screen. I see that it is a known issue, so I tried everything from following steps: To removed .XAuthority Configure to use gdm Reinstall lightdm To include my user to nopasswdlogin group But nothing help... So, these are errors from /var/log/auth.log: Oct 3 01:11:48 alphabet-2 lightdm: pam_unix(lightdm:session): session opened for user lightdm by (uid=0) Oct 3 01:11:48 alphabet-2 lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0 Oct 3 01:11:48 alphabet-2 lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "andrey" Oct 3 01:11:48 alphabet-2 dbus[704]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.35" (uid=104 pid=1709 comm="/usr/lib/indicator-datetime/indicator-datetime-ser") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.14" (uid=0 pid=1169 comm="/usr/sbin/console-kit-daemon --no-daemon ") Any ideas?

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• How to force a host to not send a broadcast for an IP address in its own subnet?

  - by Bruce

  For a LAN, instead of a switch, I have built a topology where each machine is connected to a router. Each host is assigned an IP address from 10/8. Here are the interface details: Lets say I ping 10.16.0.3 from this host. The routing table of 10.16.0.2 has been configured to use the router (10.16.0.1) as the default gateway. But since the destination IP address (10.16.0.3) is in the same subnet it sends out an ARP broadcast. I want to disable this behavior of sending an ARP broadcast and instead force it to use the routing table. How do I accomplish this?

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• How to contact an emergency service using only Internet?

  - by Vi.

  Suppose you are apart from the mobile or whatever phone (so can't call 112 or 911 or 999), but have have access to a computer with internet connection. How do you call/message an emergency service (of whatever country in hope they will route the request to the correct destination) using only Internet? Maybe there's some 911-like website or public SIP or whatever? Or better go to some chat/forum/StackExchange/whatever and ask somebody to make a call for you? (will users really believe?) /* 1. I'm not in any emergency, just curious. 2. I'm not sure on what SE site to ask this question. */

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• Is it possible to disable the retry mechanism in Exim

  - by Tony Meyer

  I have a very simple Exim configuration that's just forwarding all mail to a set of destination addresses. When immediate delivery to an address fails, the message is added to the queue (and then processed by the retry rules). I want to change this so that if immediately delivery fails, the message is :blackhole:d. (It's ok if a bounce is generated instead, as I'll just redirect the bounce to the :blackhole:). This needs to occur for temporary failures (i.e. 4xx) as well as permanent (i.e. 5xx) ones. I understand that this means that if delivery can't be done immediately the message will be permanently and irretrievably lost. In this particular context, that isn't a problem. Reading over this, it sounds suspiciously like "how can I improve my spamming Exim server". That really isn't what this is for, and if you can figure out a way I can prove that, I'm happy to do so!

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• IPs on home network

  - by windchime

  I have a Linksys router and a Belkin wireless router at home. The Linksys router is connected to cable modem and two computers, as well as to the Belkin wireless router. A 3rd computer is connected to the Belkin router through Wifi. The IP addresses of the computers connected to Linksys are 192.168.1.101 and 192.168.1.102. The IP address of the Linksys router on LAN is 192.168.1.1. The IP address of the Belkin wireless router is 192.168.2.1(based on the 3rd computer's routing table) and the IP address of the 3rd computer is 192.168.2.5. If I ping 192.168.1.101 from 192.168.2.5, all are well. However, if I ping 192.168.2.5 from 192.168.1.101, Destination Host Unreachable. Why?

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• Simple copy to pen-drive - 0x80070057

  - by yzraeu

  Hello guys, I have this problem for a while and still didn't find the answer. I'm copying a specifc 10mb file to my pen-drive, from any folder on PC to any folder on the pen-drive and all i get is this: 0x80070057 The parameter is incorrect I simply cannot copy the file at all!! The pen-drive in case is my Nokia 5800, in "Mass Storage" mode. Sometimes I cannot copy a single MP3 file, 5 or 7mb. So i have to disconnect and connect again. The source file is not corrupted, the destination works fine with other files. It's just with some files. If I change to another pen-drive, works fine.

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• How to copy directories using debugfs?

  - by tjbp

  The debugfs manpage gives the impression that the command 'rdump . .' will recursively copy all files found on the specified filesystem from the debugfs cwd to the native filesystem's cwd. Instead I seem to receive a syntax error, and no copy is initiated? These are the commands I run: cd /path/to/transfer/destination debugfs /dev/sda1 -R rdump . . My task is to copy the entire contents of a clean yet unmountable USB storage device to its host machine's HD. The host machine does not support the inode size used by the USB device's filesystem (256) and its software is not upgradeable, so my intention was to use debugfs to transfer the files. If anyone has any other suggestions for this task I'd be grateful.

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• Tomato QoS: Why is some traffic unclassified when there are classifications for it?

  - by Armitage

  Ok, I am trying to tweak my router to give priority to some traffic. My classifications seem to cover just about everything but I still see ~60 to ~80% of the traffic as unclassified: TCP 192.168.1.100 64137 192.168.1.1 80 Unclassified TCP 192.168.1.100 64175 192.168.1.1 80 Unclassified TCP 192.168.1.100 64144 192.168.1.1 443 Unclassified I assume that the 64### ports are just what my WAP uses to send packets inside my home network. But my classifications seems to cover any traffic for destination ports 80 and 443: (partial list) TCP Dst Port: 80,443 High WWW TCP/UDP Dst Port: 1024-65535 Lowest Bulk Traffic Why do I have so much unclassified traffic if I have a classification that should cover it?

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• secure synchronization of large amount of data

  - by goncalopp

  I need to automatically mirror a large amount (terabytes) of files in two unix machines over a slow link (1 Mbps). This needs to be done frequently, but the data doesn't change too much (delta transmission doesn't saturate the link). The usual solution would be rsync, but there's an additional requirement: it's undesirable, from a security standpoint, that either the source or destination machines have (keyless) ssh keys to each other, or any kind of filesystem access. All communication between the two machines should thus be initialized (and mediated) through a third machine. I've asked a separate question about rsync in particular here. Are there other obvious solutions I'm missing?

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• Why is windows 7 backup and restore utility using so much disc space?

  - by stuckey

  note: this is a reformation of a previous question, see: How exactly does the Backup and Restore utility in Windows7 work? I have per the task scheduler scheduled windows 7 backup and utility to run once a day. The amount of data I produce in a day is best measured in KiB yet, a few GiB of data is added to the backup destination set in the backup utility daily. Why is this? Is this due to this utility making what are called "normal" backups instead of "incremental" backups? If so, how can this setting be changed?

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• converting huge MPEG audio files to something smaller

  - by john

  I've got some large MPEG audio files (144 MB each) that I'm looking to convert to something smaller so I can send them out as attachments to an email. Any suggestions on the software to use? I'm looking for something free that will run on Windows. I don't really care what the destination file is, mp3 would be nice. If there's a web service out there that would do this without the need to download any software to my machine, that would be even better, but I would be more than happy just getting it done any way I can. Thanks!

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• Confusion about TCP packet analysis terms

  - by Berkay

  I'm analyzing our network and have some confusion about the terms: this is the 2-packet output from source to destination. from these i have to get some features as describe, pls make me clear... packets with at least a bytes of TCP data payload: it seems tcp.len0; The minimum segment size (confusion is headers are included or or not) The average segment size observed during the lifetime of the connection, the definition: is calculated as the value reported in the actual data bytes divided by the actual data pkts reported. Total bytes in IP packets, should be ip_len value. Total bytes in (Ethernet) The total number of bytes sent probably related to frame.len and frame.cap_len these two terms are describes as, also make me clear about these two terms. frame.cap_len: Frame length stored into the capture file frame.len: Frame length on the wire

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• Sending single emails works, but sending to the same email in a distribution list is bounced

  - by EvilChookie

  I'm running an Exchange 2003 server on a Telstra Business internet connection (in Australia). I'm routing emails through the SMTP connecter, using the host smtp.telstrabusiness.com When users send single emails to a single recipient, the emails are sent correctly. However, when users send emails to a distribution list, they bounce back with: The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient. One of the people in the list was able to recieve a single email from us just a few minutes afterwards, but did not recieve any of the email that should have come from the distribution list. Is there a way I can throttle the number of messages that Exchange will send at a time, so as not to appear as spam to Telstra?

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• Convert from port numbers to protocol names in wireshark

  - by Berkay

  i'm simply using tshark -r botnet.pcap -T fields -E separator=';' -e ip.src -e tcp.srcport -e ip.dst -e tcp.dstport '(tcp.flags.syn == 1 and tcp.flags.ack == 0)' to see the all initiated "legal TCP" connections. However, i need the destination port number conversion to "http" "netbios" etc. i'm not using -n option, but still i get: 128.3.45.128;62259;208.233.189.150;80 This is what i'm trying to get: 128.3.45.128;62259;208.233.189.150;http or 128.3.45.128;62259;208.233.189.150;80;http is better option for me. any idea from tshark users? or any other tool suggestions?

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• OSX 10.6 Cisco IPSEC strange behavior

  - by tair

  I'm trying to connect to Cisco IPSEC VPN of my company over DSL Internet. I managed to successfully connect using Cisco VPN Client, now I'm trying to switch to OSX 10.6 native client, because of licensing issues. The problems is that the connection fails with a dialog box containing the message: The negotiation with the VPN server failed. Verify the server address and try reconnecting. I checked logs: Jun 29 13:10:39 racoon[4551]: Connecting. Jun 29 13:10:39 racoon[4551]: IKE Packet: transmit success. (Initiator, Aggressive-Mode message 1). Jun 29 13:10:39 racoon[4551]: IKEv1 Phase1 AUTH: success. (Initiator, Aggressive-Mode Message 2). Jun 29 13:10:39 racoon[4551]: IKE Packet: receive success. (Initiator, Aggressive-Mode message 2). Jun 29 13:10:39 racoon[4551]: IKEv1 Phase1 Initiator: success. (Initiator, Aggressive-Mode). Jun 29 13:10:39 racoon[4551]: IKE Packet: transmit success. (Initiator, Aggressive-Mode message 3). Jun 29 13:10:42 racoon[4551]: IKE Packet: transmit success. (Mode-Config message). Jun 29 13:10:42 racoon[4551]: IKEv1 XAUTH: success. (XAUTH Status is OK). Jun 29 13:10:42 racoon[4551]: IKE Packet: transmit success. (Mode-Config message). Jun 29 13:10:42 racoon[4551]: IKEv1 Config: retransmited. (Mode-Config retransmit). Jun 29 13:10:42 racoon[4551]: IKE Packet: receive success. (MODE-Config). Jun 29 13:10:42 configd[19]: event_callback: Address added. previous interface setting (name: en1, address: 192.168.1.107), current interface setting (name: u92.168.54.147, subnet: 255.255.255.0, destination: 192.168.54.147). Jun 29 13:10:42 configd[19]: network configuration changed. Jun 29 13:10:42 vmnet-bridge[111]: Dynamic store changed Jun 29 13:10:42 named[62]: not listening on any interfaces Jun 29 13:10:58: --- last message repeated 1 time --- Jun 29 13:10:58 configd[19]: SCNCController: Disconnecting. (Connection tried to negotiate for, 16 seconds). Jun 29 13:10:58 racoon[4551]: IKE Packet: transmit success. (Information message). Jun 29 13:10:58 racoon[4551]: IKEv1 Information-Notice: transmit success. (Delete ISAKMP-SA). Jun 29 13:10:58 racoon[4551]: Disconnecting. (Connection tried to negotiate for, 19.113382 seconds). Jun 29 13:10:58 named[62]: not listening on any interfaces Jun 29 13:10:58 vmnet-bridge[111]: Dynamic store changed Jun 29 13:10:58 named[62]: not listening on any interfaces Jun 29 13:10:58 configd[19]: network configuration changed. Then I opened Terminal, started pinging a server behind VPN, and tried to connect again. Now connection is OK! Logs this time: Jun 29 13:46:53 racoon[8136]: Connecting. Jun 29 13:46:53 racoon[8136]: IKE Packet: transmit success. (Initiator, Aggressive-Mode message 1). Jun 29 13:46:53 racoon[8136]: IKEv1 Phase1 AUTH: success. (Initiator, Aggressive-Mode Message 2). Jun 29 13:46:53 racoon[8136]: IKE Packet: receive success. (Initiator, Aggressive-Mode message 2). Jun 29 13:46:53 racoon[8136]: IKEv1 Phase1 Initiator: success. (Initiator, Aggressive-Mode). Jun 29 13:46:53 racoon[8136]: IKE Packet: transmit success. (Initiator, Aggressive-Mode message 3). Jun 29 13:46:56 racoon[8136]: IKE Packet: transmit success. (Mode-Config message). Jun 29 13:46:56 racoon[8136]: IKEv1 XAUTH: success. (XAUTH Status is OK). Jun 29 13:46:56 racoon[8136]: IKE Packet: transmit success. (Mode-Config message). Jun 29 13:46:56 racoon[8136]: IKEv1 Config: retransmited. (Mode-Config retransmit). Jun 29 13:46:56 racoon[8136]: IKE Packet: receive success. (MODE-Config). Jun 29 13:46:56 configd[19]: event_callback: Address added. previous interface setting (name: en1, address: 192.168.1.107), current interface settinaddress: 192.168.54.149, subnet: 255.255.255.0, destination: 192.168.54.149). Jun 29 13:46:56 vmnet-bridge[111]: Dynamic store changed Jun 29 13:46:56 named[62]: not listening on any interfaces Jun 29 13:46:56 configd[19]: network configuration changed. Jun 29 13:46:56 named[62]: not listening on any interfaces Jun 29 13:46:56 racoon[8136]: IKE Packet: transmit success. (Initiator, Quick-Mode message 1). Jun 29 13:46:56 racoon[8136]: IKE Packet: receive success. (Initiator, Quick-Mode message 2). Jun 29 13:46:56 racoon[8136]: IKE Packet: transmit success. (Initiator, Quick-Mode message 3). Jun 29 13:46:56 racoon[8136]: IKEv1 Phase2 Initiator: success. (Initiator, Quick-Mode). Jun 29 13:46:56 racoon[8136]: Connected. Jun 29 13:46:56 configd[19]: SCNCController: Connected. I tested it several times and it consistently behaves the same. What is the magic?

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• Openssh sftp-server: .filepart support?

  - by Guillaume Bodi

  I am trying to setup a SFTP server, running off Ubuntu Server 11.04. I installed openssh-server to provide SSH access. What I am trying to do is make file uploads run with a suffix (.filepart or whatever), which would be removed upon transfer completion. The flow idea is: User uploads cat.jpg The server starts writing cat.jpg.filepart in the destination directory Once the upload completes, the server trashes the previous cat.jpg (if any) and renames cat.jpg.filepart to cat.jpg This is to make sure that incomplete file uploads do not overwrite the existing files. Any idea on how I can do this? Thanks

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• MS SQL dts to ssis migration error

  - by Manjot

  Hi, I have migrated some DTS packages to SSIS 2005 using "Migration" wizard. When I tried to run it, it fails saying you need a higher version of SSIS even though the destination SSIS server is on 9.0.4211 level. then I digged in the package using business intelligence studio and saw that one of the package subtasks is "Transform data task" (the dts version) and the package fails to run that. The storage location for this dts task is set to "Embedded in Task". I didn't touch it. why didn't it convert this task to an SSIS data flow task? any help please? Thansk in advance

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• Microsoft ISA 2004 - Failed Connection Attempt

  - by Arief

  I have an issue where users with Android tablet cannot download apps through ISA 2004. This is what I get from the ISA 2004 logging: I did try to add the source ip address and the destination ip address in All for All Modified rule. However, it does not fix that problem. I also use GFI Web Monitoring. I did add the 151.101.13.80 ip address into the Whitelist, and no luck. What Failed Connection Attempt exactly is? How to overcome this. The Android tablet is throwing an error 495, could not be downloaded. Thanks everyone.

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• LDAP over SSL with an EFI Fiery printer

  - by austinian

  I've got a printer with a Fiery running 8e Release 2. I can authenticate users against AD using the LDAP configuration, but I can only get it to work if I don't use SSL/TLS, and only if I use SIMPLE authentication. Right now, it's authenticating using a fairly low-impact user, but it's also the only system on our network that's not using LDAPS. I can get AD info fine over LDAPS using ldp.exe from my machine, our firewall, our mail filter, our linux boxes, etc. The only problem child is the Fiery. I've added the LDAP server certificate as a trusted cert to the Fiery, but after I check the box for Secure Communication and change the port to 636, pressing Validate results in a dialog box coming up saying: LDAP Validation Failed Server Name invalid or server is unavailable. I've tried changing the server name to use just the name, the FQDN, and the IP address, and changed it to another server, just to see if it was just this AD server that was fussy with the Fiery. EDIT: removed LDP output, added packet capture analysis from wireshark: The conversation seems pretty normal to me, up to the point where the Fiery terminates the connection after the server sends back a handshake response. Maybe they messed up their TLS implementation? I'm trying support, but it's been fairly useless so far. The cert is a SHA-2 (sha256RSA) 2048-bit certificate. Also, it looks like the Fiery is specifying TLS 1.0. Looking at http://msdn.microsoft.com/en-us/library/windows/desktop/aa374757(v=vs.85).aspx, I'm not seeing SHA256 and TLS 1.0 combination being supported by SChannel. headdesk perhaps that's why, after the DC changes the cipher spec, the connection is terminated by the Fiery? TLS 1.1 and 1.2 are enabled on the DC. Wireshark conversation: DC: 172.17.2.22, Fiery: 172.17.2.42 No. Time Source Source Port Destination Destination Port Protocol Length Info 1 0.000000000 172.17.2.42 48633 172.17.2.22 ldaps TCP 74 48633 > ldaps [SYN] Seq=0 Win=5840 Len=0 MSS=1460 SACK_PERM=1 TSval=3101761 TSecr=0 WS=4 2 0.000182000 Dell_5e:94:e3 Broadcast ARP 60 Who has 172.17.2.42? Tell 172.17.2.22 3 0.000369000 TyanComp_c9:0f:90 Dell_5e:94:e3 ARP 60 172.17.2.42 is at 00:e0:81:c9:0f:90 4 0.000370000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 74 ldaps > 48633 [SYN, ACK] Seq=0 Ack=1 Win=8192 Len=0 MSS=1460 WS=256 SACK_PERM=1 TSval=67970573 TSecr=3101761 5 0.000548000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [ACK] Seq=1 Ack=1 Win=5840 Len=0 TSval=3101761 TSecr=67970573 6 0.001000000 172.17.2.42 48633 172.17.2.22 ldaps TLSv1 147 Client Hello 7 0.001326000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 1514 [TCP segment of a reassembled PDU] 8 0.001513000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 1514 [TCP segment of a reassembled PDU] 9 0.001515000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [ACK] Seq=82 Ack=1449 Win=8736 Len=0 TSval=3101761 TSecr=67970573 10 0.001516000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [ACK] Seq=82 Ack=2897 Win=11632 Len=0 TSval=3101761 TSecr=67970573 11 0.001732000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 1514 [TCP segment of a reassembled PDU] 12 0.001737000 172.17.2.22 ldaps 172.17.2.42 48633 TLSv1 1243 Server Hello, Certificate, Certificate Request, Server Hello Done 13 0.001738000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [ACK] Seq=82 Ack=4345 Win=14528 Len=0 TSval=3101761 TSecr=67970573 14 0.001739000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [ACK] Seq=82 Ack=5522 Win=17424 Len=0 TSval=3101761 TSecr=67970573 15 0.002906000 172.17.2.42 48633 172.17.2.22 ldaps TLSv1 78 Certificate 16 0.004155000 172.17.2.42 48633 172.17.2.22 ldaps TLSv1 333 Client Key Exchange 17 0.004338000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 66 ldaps > 48633 [ACK] Seq=5522 Ack=361 Win=66304 Len=0 TSval=67970573 TSecr=3101762 18 0.004338000 172.17.2.42 48633 172.17.2.22 ldaps TLSv1 72 Change Cipher Spec 19 0.005481000 172.17.2.42 48633 172.17.2.22 ldaps TLSv1 327 Encrypted Handshake Message 20 0.005645000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 66 ldaps > 48633 [ACK] Seq=5522 Ack=628 Win=66048 Len=0 TSval=67970574 TSecr=3101762 21 0.010247000 172.17.2.22 ldaps 172.17.2.42 48633 TLSv1 125 Change Cipher Spec, Encrypted Handshake Message 22 0.016451000 172.17.2.42 48633 172.17.2.22 ldaps TCP 66 48633 > ldaps [FIN, ACK] Seq=628 Ack=5581 Win=17424 Len=0 TSval=3101765 TSecr=67970574 23 0.016630000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 66 ldaps > 48633 [ACK] Seq=5581 Ack=629 Win=66048 Len=0 TSval=67970575 TSecr=3101765 24 0.016811000 172.17.2.22 ldaps 172.17.2.42 48633 TCP 60 ldaps > 48633 [RST, ACK] Seq=5581 Ack=629 Win=0 Len=0

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• Forward the Wan IP to another Wan IP without changing the source address

  - by user195410

  I have tried this case by using the NAT function in iptables but fail example. PC A IP is 1.1.1.1 (Win7) My Server IP is 2.2.2.2 (CentOS 6.2) target Server B is 3.3.3.3 (Windows server 2003) Flow: PC A WanIP -- My Server A -- Server B (WanIP) My iptables rules: 1. iptables -t nat -A PREROUTING -d 2.2.2.2 -p tcp --dport 80 -j DNAT --to-destination 3.3.3.3:80 2. iptables -t nat -A POSTROUTING -d 2.2.2.2 -j MASQUERADE finally, i can access server B website by enter 2.2.2.2:80 but when i checked the access log at Server B i found it's source address had been changed to src:2.2.2.2 dst:3.3.3.3 please help me to do how to get the real address is src:1.1.1.1 dst:3.3.3.3

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• Help about NAT with virtual server

  - by Thanh Tran

  I have a dedicated server running Linux CentOS 5.3 with 2 IP addresses. I've installed a virtual machine using VMware Server. The host and the guest have a host-only network. Now I want to map the 2nd IP address to the virtual machine so that it can run as a second dedicated server for me. Here is what I do: modprobe iptable_nat echo "1" > /proc/sys/net/ipv4/ip_forward iptables -t filter -A FORWARD -s 192.168.78.128 -d 64.85.164.184 -j ACCEPT iptables -t nat -A PREROUTING -d 64.85.164.184 -i eth0 -j DNAT --to-destination 192.168.78.128 iptables -t nat -A POSTROUTING -s 192.168.78.128 -o eth0 -j SNAT --to-source 64.85.164.184</p> But it not working as intended. What is the matter?

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