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  • Network connection to Firebird 2.1 became slow after upgrading to Ubuntu 10.04

    - by lyle
    We've got a setup that we're using for different clients : a program connecting to a Firebird server on a local network. So far we mostly used 32bit processors running Ubuntu LTS (recently upgraded to 10.04). Now we introduced servers running on 64bit processors, running Ubuntu 10.04 64bit. Suddenly some queries run slower than they used to. In short: running the query locally works fine on both 64bit and 32bit servers, but when running the same queries over the network the 64bit server is suddenly much slower. We did a few checks with both local and remote connections to both 64bit and 32bit servers, using identical databases and identical queries, running in Flamerobin. Running the query locally takes a negligible amount of time: 0.008s on the 64bit server, 0.014s on the 32bit servers. So the servers themselves are running fine. Running the queries over the network, the 64bit server suddenly needs up to 0.160s to respond, while the 32bit server responds in 0.055s. So the older servers are twice as fast over the network, in spite of the newer servers being twice as fast if run locally. Apart from that the setup is identical. All servers are running the same installation of Ubuntu 10.04, same version of Firebird and so on, the only difference is that some are 64 and some 32bit. Any idea?? I tried to google it, but I couldn't find any complains that Firebird 64bit is slower than Firebird 32bit, except that the Firebird 2.1 change log mentions that there's a new network API which is twice as fast, as soon as the drivers are updated to use it. So I could imagine that the 64bit driver is still using the old API, but that's a bit of a stretch, I guess. Thanx in advance for any replies! :)

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  • KVM-Guests can't get past bridge - no internet connection

    - by tmn29a
    I'm running a backported KVM on a Debian Squeeze. ATM the KVM-Guest can't connect to the internet through the bridge I have set up. The guests can reach each other, the host but nothing outside. I can neither ping, nslookup or do anything to a remote address. The guest are configured to have a static IP. When I didn;t have the bridge but a virtual bridge (the KVM-default) the guest could connect fine. After setting up the bridge things broke, so I think the problem lies there. # The loopback network interface auto lo br0 iface lo inet loopback # Bonding Interface auto bond0 iface bond0 inet static address 10.XXX.XXX.84 netmask 255.255.255.192 network 10.XXX.XXX.64 gateway 10.XXX.XXX.65 slaves eth0 eth1 bond_mode active-backup bond_miimon 100 bond_downdelay 200 bond_updelay 200 iface br0 inet static bridge_ports eth0 eth1 address 172.xxx.xxx.65 broadcast 172.xxx.xxx.127 netmask 255.255.255.192 gateway 172.xxx.xxx.65 bridge_stp on bridge_maxwait 0 Thanks in advance for your help !

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  • router - Problem Sharing internet connection in my router

    - by luis velasco
    Hi we are 4 roomates at the university but I have a problem. One of my roomies is downloading torrents all the time. When somebody need make a call or doing something like you tube or a quiz using the internet conection. The internet is very slow.... I can not create a network using a computer as a proxy. I just need a good router (and in the budget no more than $50).. I just want to split 16MB. In a separated 4 x 4 mb (theoretically)..

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  • Create tunnel through an open SSH connection?

    - by criptych
    I have a remote PC (behind NAT and firewall) set up to create a reverse SSH tunnel to my home PC/server (DMZed). Unfortunately, the tunnel hasn't been working lately. Fortunately -- I think -- the remote PC currently has an SFTP session open to the local one. My question is, can I create a tunnel back to the remote PC through that session? Or am I SOL until I can physically get in to restore the reverse tunnel on the remote PC?

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  • Connection issues with Linksys WRT54GL / Tomato

    - by Phoshi
    So I recently purchased a new router, and decided to put Tomato on it for some of the fancy features, like graphs. Only problem is, now I've installed it I can't connect to the internet any more! What I've done so far is plug the router in, connect to it wirelessly, and upgrade the firmware to the right version for my router. This went swimmingly, the router restarted, and everything's Tomatoey. Except it won't, now, connect to the internet, and I'm entirely unsure what I've missed. My old router was a BT Homehub, my ISP is BT (British Telecommunications). I'm a bit lost, this is the first time I've done any of this 3rd party firmware stuff.

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  • Setting up Squid -> VPN connection

    - by Nedlinin
    I recently purchased a VPS and am wanting to use it as a VPN server. However, it has bandwidth limitations. So, I figured since I already have a local Squid proxy caching things for me, I could have users connect to the proxy and the proxy connect to the VPN. Then when someone hits the web, Squid will serve it from cache if available and, if not, it will use the VPN to download it. My issue is, I have no idea how to set this up :p - Essentially I want Machine - Squid - VPN. My VPN is running on Ubuntu Server with pptpd. Squid is running on a local Arch Linux box. Squid and the VPN are both working perfectly independently. Any help on how to have Squid push traffic through the VPN would be greatly appreciated! Also: I don't actually want to use the VPN for all traffic. Otherwise, I'd just connect my router to the VPN and be happy. I only want to use it for web traffic from specific machines on the network.

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  • Cablemodem frequent connection loss

    - by LVDave
    I have a Linksys BEFCMU10 cablemodem and a WRT54GL router with Tomato 1.27 firmware on Cox cable. My question is this: I get what seems to be random disconnects from the internet, where the cable modem lights are still normal, but I can connect nowhere, either via a url or an ip address. At the same time these disconnects are happening, I can go to the router's Tomato management webpage, and release/renew my external IP address from Cox's DHCP server. I've had Cox look at the signal levels on the cable modem, and they say they look fine. What brings back the modem, for sometimes as long as 17 days, is several power-cycles of the modem. I don't understand the underlying cable modem technology too well, but I do know that if I'm able to release/renew the DHCP-provided WAN address, I'd expect that the cable modem was working ok... Anybody have any ideas??

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  • special case ssh connection lag

    - by Hersheezy
    Setup We have a DMZ and LAN in our office that are connected to the outside with the following setup: +------+ | |------> LAN (normal office router) |Modem | | |------> DMZ (a single machine) +------+ Our internet account is with Comcast and we have 5 status IPs, one of which points to the single machine in the DMZ. Problem ssh connections initiated ANYWHERE EXCEPT the office LAN are really fast. However, from the LAN, there is about a 5 second delay. WTF?? Extra info The DMZ machine is debian 5. Executing a wget to the DMZ has no lag. When executing the following, everything up to HERE IS WHERE THE LAG IS INCURRED executes immediately. ssh -vvvv [email protected] ... debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: Wrote 16 bytes for a total of 1015 debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug3: Wrote 48 bytes for a total of 1063 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug2: key: /home/shopkins/.ssh/id_rsa (0x22440830) debug2: key: /home/shopkins/.ssh/identity ((nil)) debug2: key: /home/shopkins/.ssh/id_dsa ((nil)) debug3: Wrote 64 bytes for a total of 1127` HERE IS WHERE THE LAG IS INCURRED debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /home/shopkins/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug3: Wrote 368 bytes for a total of 1495 debug1: Authentications that can continue: publickey,password debug1: Trying private key: /home/shopkins/.ssh/identity debug3: no such identity: /home/shopkins/.ssh/identity debug1: Trying private key: /home/shopkins/.ssh/id_dsa debug3: no such identity: /home/shopkins/.ssh/id_dsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password [email protected]'s password:

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  • CentOS running inside VMware as WebServer times out on outside connection

    - by Tom Hart
    I have a CentOS machine running inside VMware, and I have got PHP and Apache set up on it, so if I open a browser (on the VM) and go to either localhost, or 192.168.0.3, I get a phpinfo page I made in /var/www/html/index.php, but, if on the host (Windows 7), in my browser I go to 192.168.0.3, it times out. I can ping the IP address from Windows and get a response, I just can't through the browser. Does anyone have any ideas what I need to do to get this working? This is my first time using a VM and I'm getting lost in the network settings.

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  • 3.5 mm component video jack -> Ipod female connection?

    - by Jigs
    At my gym the treadmills all have ipod male cables hanging out of them so that you can plug in a video ipod and play a video directly to the screen on the treadmill. I own a non apple MP4 player is there an adapter that will go from a 3.5mm component video jack to a female ipod connector that will allow me to watch a film on the screen?

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  • Windows Server 2008 R2, weird intermittent outgoing connection issues, & Hyper-V Virtual Network

    - by brizz
    My provider says that they run an 'unfiltered' network, so it's not a network issue. Not entirely convinced...but they aren't being very helpful. Basically two days ago started having issues with DNS completely stop working for anywhere between 2-20minutes. This happens roughly every 1-2 hours at least once. I later then found that I am unable to ping ANY external IP address when this is going on. So it's not a DNS issue. Whats even more odd is when this is going on, I STAY connected via RDP, and I can access webpages, etc that are on the server when I access from my home computer. Have tried disabling the firewall--no fix. Have checked Event viewer, the only thing that is there is a warning that DNS has stopped working. I have made no changes/updates to the server. The only thing I have done is add an IP address (don't think it has anything to do with the problem, but wanted to mention everything). Any help/insight/suggestions on how to go about debugging would be much appreciated! update: I am also running Hyper-V, and a virtual network. I just tried pinging (when I have issues), from a Hyper-V machine--and it works, when the main server doesn't.

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  • RDP Connection to XP from Windows 7 crashes part of XP

    - by Oliver Nelson
    I have some XP machines that my users RDP into. If I RDP into the machine from something other than a Windows 7 box, and then RDP into the machine with a Windows 7 box, the XP machines crash (not BSOD though). I get an event ID 1003 with these details: Error code 1000008e, parameter1 c0000005, parameter2 bf85b6b7, parameter3 b6149a88, parameter4 00000000. I have this happening on quite a few machines, and I can reliably reproduce it. I've found no way to fix it. If I only connect from Windows 7 machines, it never fails. Any suggestions? (I've checked color settings and basic RDP client settings, and they all seem to match between the Windows 7 Clients and the XP clients).

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  • SeLinux blocking connection to sshd on Ubuntu 9.10

    - by Barton Chittenden
    When I try to log on to my laptop, which runs Ubuntu 9.10, the server rejects my login attempts. Checking /var/log/auth.log, I see the following: Feb 14 12:41:16 tiger-laptop sshd[6798]: error: ssh_selinux_getctxbyname: Failed to get default SELinux security context for tiger I googled for this, and ran across the following: http://www.spinics.net/lists/fedora-.../msg13049.html Here's the part that I think relates to the problem that I'm having: Quote: What's wrong on my system? Why it's not possible to login even if selinux is in permissive mode? Any suggestions? I'd start by trying to figure out why sshd isn't running in sshd_t (it seems to be running in sysadm_t). Paul. selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mail...stinfo/selinux Yes, sshd is running in sysadm_t: ps axZ | grep sshd system_u:system_r:sysadm_t 3632 ? Ss 0:00 /usr/sbin/sshd -o PidFile=/var/run/sshd.init.pi ls -Z /usr/sbin/sshd system_ubject_r:sshd_exec_t /usr/sbin/sshd Don't know why it's not sshd_t. I didn't modified something. It's a standard installation of sles11 with the default reference policy from tresys. Maybe this code snippet from policy/modules/services/ssh.te is responsible for that: Allow ssh logins as sysadm_r:sysadm_t gen_tunable(ssh_sysadm_login, true) Any ideas? Do you have boolean init_upstart set to on? if not try setting it to on. I do not believe ssh_sysadm_login boolean works currently but i may be mistaken. -- Yeah, setting init_upstart to on did the trick! THANK A LOT! Do you know why this prevents the user from logging in through ssh even if selinux is set to permissive?? Ok, so the million dollar question is "where do I set 'init_upstart=1'"? It's not clear from context which configuration file needs to be edited, and I'm not at all familiar with SELinux configuration.

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  • WMI Remote connection objsWbemLocator.ConnectServer

    - by Sam
    I have an issue when connecting to remote machines using the following: Set objWMIService = objSWbemLocator.ConnectServer _ (sIP, "root\CIMV2", strUser, strPassword, "MS_409", "ntlmdomain:" + sDomain, 128) the problem is that some machines are not timing out and the process hangs. Is there a way to cancel the connect and continue with the next ip? I'm using vbscript. Thanks, Sam

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  • Predictive vs Least Connection Load Balancing Techniques

    - by Mani
    I have a windows based desktop application that communicates via TCP to the application servers. (windows 2003). No sticky sessions between client calls. We have exactly 2 servers to load balance and we are thinking to use a F5 hardware NLB. The application is a heavy load types, doing not much bussiness logic in the services but retrieving quite a big amount of data at most of the times. May be on an average 5000 to 10000 records at all times. Used mainly for storing and retirieving data and no special processing of data or calculations running on the server side. I am favouring 'predictive' considering my services take a while at times to return data and hence tracking the feedback would yield some better routing as in predictive. I am not sure if the given data is sufficient enough to suggest some ideas but considering these, what would be some suggestions\things to consider\best between Predictive and Least Connections ? Thanks.

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  • mysql remote connection [closed]

    - by Fel
    I spoke with my host supporter to find what is my sql hostname. He said that the only way is add permissions in mysql remote (cpanel) to my actual ip. So the config in heidiSQL for example will be localhost userxxx passxxx But i have a dynamic ip, so i need to change the permissions every time, correct? Add the flag % probably is not a good idea, so how can I solve this problem? Why I dont have something like mysql.something.com ? Sorry, if this question is too basic.

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  • AWS RDS MySQL remote connection extremely slow

    - by nute
    I have a site hosted on AWS EC2 (Elastic Beanstalk), with a MySQL database hosted on AWS RDS. Everything works fine on the production server, fast and all. However when I try to connect remotely from my local machine, it sometimes gets extremely slow (like 4 minutes to load the list of tables), or simply times out. I added my IP in the security group (which I did correctly, since it sometimes works). When it doesn't work, I at the same time check the prod server and it still looks good.

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  • Lingering tcp connection in LISTEN state

    - by Silvio Donnini
    My java application can sometimes be killed by an external script. This can be done either with SIGTERM or with SIGKILL. The application is a server which receives many connections per second, and it can be killed while trying to serve them. I would like to restart the application whenever it's killed, so I have prepared a script for that purpose. The problem is that, once the app has been killed, the new application instance can't bind to the port used by the previous instance, because the "Address is already in use". The previous instance's process has been definitely terminated, anyway the offending listening port is still there, but it is assigned to bash (or sh on other machines). Obviouly, my goal is to restart the application and let it bind successfully to the previous address. I've tried waiting more than 200 seconds before restarting to no avail, anyway I can't afford to wait that much. I've encountered this problem on all the machines I've ran the application (which is a jetty server with java 1.6). Any suggestion is appreciated, thanks, Silvio

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  • Bandwidth Control on our Internet Connection

    - by AlamedaDad
    Hi all, I have Covad dual/bonded T1 service in our office coming through a Cisco 1841 and then through a Sonicwall 3060Pro/Enhanced SW firewall. The problem I'm looking for some input on is how to limit the amount of bandwidth any single user/PC can user for downloading a file from the Internet. It's become an issue that when one person happens to download let's say an ~300MB file, normal internet access for the other employees slows to a crawl. I've seen through MRTG that in fact usage of the circuit jumps to the full 3mb for the duration of the download and then drops. Is it possible to control this? I'm not familiar with QOS or the like so I'm not sure. Any help on this would be appreciated. Thanks...Michael

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  • RDP Connection to XP from Windows 7 crashes part of XP

    - by flxkid
    I have some XP machines that I RDP into. If I RDP into the machine from something other than a Windows 7 box, and then RDP into the machine with a Windows 7 box, the XP machines crash (not BSOD though). I get an event ID 1003 with these details: Error code 1000008e, parameter1 c0000005, parameter2 bf85b6b7, parameter3 b6149a88, parameter4 00000000. I have this happening on quite a few machines, and I can reliably reproduce it. I've found no way to fix it. If I only connect from Windows 7 machines, it never fails. Any suggestions?

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  • After segment lost TCP connection never recovers

    - by mvladic
    Take a look at following trace taken with Wireshark: http://dl.dropbox.com/u/145579/trace1.pcap or http://dl.dropbox.com/u/145579/trace2.pcap I will repeat here an interesting part (from trace1.pcap): No. Time Source Destination Protocol Length Info 1850 2012-02-09 13:44:32.609 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=581704 Win=65392 Len=0 1851 2012-02-09 13:44:32.610 192.168.4.213 172.22.37.4 COTP 550 DT TPDU (0) [COTP fragment, 509 bytes] 1852 2012-02-09 13:44:32.639 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1853 2012-02-09 13:44:32.639 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=582736 Win=65392 Len=0 1854 2012-02-09 13:44:32.657 192.168.4.213 172.22.37.4 TCP 590 [TCP Previous segment lost] 62479 > iso-tsap [ACK] Seq=583232 Ack=345 Win=65191 Len=536 1855 2012-02-09 13:44:32.657 192.168.4.213 172.22.37.4 TCP 108 [TCP segment of a reassembled PDU] 1856 2012-02-09 13:44:32.657 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1853#1] iso-tsap > 62479 [ACK] Seq=345 Ack=582736 Win=65392 Len=0 1857 2012-02-09 13:44:32.657 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1853#2] iso-tsap > 62479 [ACK] Seq=345 Ack=582736 Win=65392 Len=0 1858 2012-02-09 13:44:32.675 192.168.4.213 172.22.37.4 COTP 590 [TCP Fast Retransmission] DT TPDU (0) [COTP fragment, 509 bytes] 1859 2012-02-09 13:44:32.715 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1860 2012-02-09 13:44:32.715 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=583272 Win=65392 Len=0 1861 2012-02-09 13:44:32.796 192.168.4.213 172.22.37.4 COTP 590 [TCP Retransmission] DT TPDU (0) EOT 1862 2012-02-09 13:44:32.945 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1863 2012-02-09 13:44:32.945 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=583808 Win=65392 Len=0 1864 2012-02-09 13:44:32.963 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1865 2012-02-09 13:44:32.963 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1863#1] iso-tsap > 62479 [ACK] Seq=345 Ack=583808 Win=65392 Len=0 1866 2012-02-09 13:44:32.963 192.168.4.213 172.22.37.4 TCP 576 [TCP segment of a reassembled PDU] 1867 2012-02-09 13:44:32.963 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1863#2] iso-tsap > 62479 [ACK] Seq=345 Ack=583808 Win=65392 Len=0 1868 2012-02-09 13:44:33.235 192.168.4.213 172.22.37.4 COTP 590 [TCP Retransmission] DT TPDU (0) [COTP fragment, 509 bytes] 1869 2012-02-09 13:44:33.434 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=584344 Win=65392 Len=0 1870 2012-02-09 13:44:33.447 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1871 2012-02-09 13:44:33.447 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1869#1] iso-tsap > 62479 [ACK] Seq=345 Ack=584344 Win=65392 Len=0 1872 2012-02-09 13:44:33.806 192.168.4.213 172.22.37.4 COTP 590 [TCP Retransmission] DT TPDU (0) [COTP fragment, 509 bytes] 1873 2012-02-09 13:44:34.006 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=584880 Win=65392 Len=0 1874 2012-02-09 13:44:34.018 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1875 2012-02-09 13:44:34.018 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1873#1] iso-tsap > 62479 [ACK] Seq=345 Ack=584880 Win=65392 Len=0 1876 2012-02-09 13:44:34.932 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1877 2012-02-09 13:44:35.132 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=585416 Win=65392 Len=0 1878 2012-02-09 13:44:35.144 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1879 2012-02-09 13:44:35.144 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1877#1] iso-tsap > 62479 [ACK] Seq=345 Ack=585416 Win=65392 Len=0 1880 2012-02-09 13:44:37.172 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1881 2012-02-09 13:44:37.372 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=585952 Win=65392 Len=0 1882 2012-02-09 13:44:37.385 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1883 2012-02-09 13:44:37.385 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1881#1] iso-tsap > 62479 [ACK] Seq=345 Ack=585952 Win=65392 Len=0 1884 2012-02-09 13:44:41.632 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1885 2012-02-09 13:44:41.832 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=586488 Win=65392 Len=0 1886 2012-02-09 13:44:41.844 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1887 2012-02-09 13:44:41.844 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1885#1] iso-tsap > 62479 [ACK] Seq=345 Ack=586488 Win=65392 Len=0 1888 2012-02-09 13:44:50.554 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1889 2012-02-09 13:44:50.753 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=587024 Win=65392 Len=0 1890 2012-02-09 13:44:50.766 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1891 2012-02-09 13:44:50.766 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1889#1] iso-tsap > 62479 [ACK] Seq=345 Ack=587024 Win=65392 Len=0 1892 2012-02-09 13:45:08.385 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1893 2012-02-09 13:45:08.585 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=587560 Win=65392 Len=0 1894 2012-02-09 13:45:08.598 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1895 2012-02-09 13:45:08.598 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1893#1] iso-tsap > 62479 [ACK] Seq=345 Ack=587560 Win=65392 Len=0 1896 2012-02-09 13:45:44.059 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] 1897 2012-02-09 13:45:44.259 172.22.37.4 192.168.4.213 TCP 54 iso-tsap > 62479 [ACK] Seq=345 Ack=588096 Win=65392 Len=0 1898 2012-02-09 13:45:44.272 192.168.4.213 172.22.37.4 COTP 590 DT TPDU (0) [COTP fragment, 509 bytes] 1899 2012-02-09 13:45:44.272 172.22.37.4 192.168.4.213 TCP 54 [TCP Dup ACK 1897#1] iso-tsap > 62479 [ACK] Seq=345 Ack=588096 Win=65392 Len=0 1900 2012-02-09 13:46:55.386 192.168.4.213 172.22.37.4 TCP 590 [TCP Retransmission] [TCP segment of a reassembled PDU] Some background information (not much, unfortunately, as I'm responsible only for server part): Server (172.22.37.4) is Windows Server 2008 R2 and client (192.168.4.213) is Ericsson telephone exchange of whom I do not know much. Client sends a file to server using FTAM protocol. This problem happens very often. I think, either client or server is doing sliding window protocol wrong. Server sends dup ack, client retransmits lost packet, but soon after client sends packets with wrong seq. Again, Server sends dup ack, client retransmits lost packet - but, this time with longer retransmission timeout. Again, client sends packet with wrong seq. Etc... Retransmission timeout grows to circa 4 minutes and communications never recovers to normal.

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  • How do I connect to a remote desktop connection to access files but not graphically

    - by user26453
    Is there any way to connect to a remote Windows server via RDP but not graphically? What options do I have simply to connect to a remote Windows machine and access my files, but not have to do it via a graphic interface. i.e. is there an equivalent of SSH or SCP (file access is really what I'm looking to do) for Windows? I will add the caveat that I do not manage the machine, so installing any services would probably not be kosher, although I do have administrator access to the machine.

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