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  • What causes winsock 10055 errors? How should I troubleshoot?

    - by Tom Kerr
    I'm investigating some issues with winsock 10055 errors on a chain of custom applications (some of which we control, some not) and was hoping to get some advice on techniques to troubleshoot the problem. No buffer space available. An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. From research, non-paged pool and ports seem to be the only resources which can cause this error. Is there another resource which might cause 10055 errors? Currently, we have perfmon counters setup on the applications and non-paged pool usage looks low in most circumstances. Open TCP connections looks low and I am unaware of another way to monitor ports. Since it only happens in production, we are unable to use more invasive counters. Is there some other tool or procedure you would recommend to diagnose which application is causing the issue?

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  • can't Remote desktop to windows XP, blaming the server side

    - by Jin
    After rebooting my work PC (windows XP sp3) this Wednesday (thank to Microsoft Tuesday), I found that I can't remote desktop to my work PC from home (with VPN to company). I have been remote-desktop to work for years and I am really surprised since connectivity is not the problem, so I brought up wireshark to sniff the packets. I can see after TCP handshake, client sent X.224 Connection Request 03 00 00 13 0e e0 00 00 00 00 00 01 00 08 00 03 00 00 00 server sent X.224 Connection Confirm. 03 00 00 0b 06 d0 00 00 12 34 00 According to "MS-RDPBCGR", the official spec on RDP, the server should include Negotiation Response in the "Connection Confirm" message but it didn't. It's empty. I googled a lot but didn't find any clue on why server did that. By the way, I used the same remote desktop client and can connect to other windows XP PC. Here are a couple of pieces of information that may help to give a clue: Since TCP handshake (server port being 3389), I believe the svchost service is actually running. going to control panel -- system window, --- "Remote" tab, the remote desktop is indeeded checked and it states that my username is allowed. according to the packet capture, client didn't even get a chance to tell server what user was trying to logon. Yes, the progress bar showed up a few seconds and then it went back to the "Remote desktop Connection" window again. Searched "windowsupdate.log", didn't find any appearance of the word "remote".

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  • Exposing the AnyConnect HTTPS service to outside network

    - by Maciej Swic
    We have a Cisco ASA 5505 with firmware ASA9.0(1) and ASDM 7.0(2). It is configured with a public ip address, and when trying to reach it from the outside by HTTPS for AnyConnect VPN, we get the following log output: 6 Nov 12 2012 07:01:40 <client-ip> 51000 <asa-ip> 443 Built inbound TCP connection 2889 for outside:<client-ip>/51000 (<client-ip>/51000) to identity:<asa-ip>/443 (<asa-ip>/443) 6 Nov 12 2012 07:01:40 <client-ip> 50999 <asa-ip> 443 Built inbound TCP connection 2890 for outside:<client-ip>/50999 (<client-ip>/50999) to identity:<asa-ip>/443 (<asa-ip>/443) 6 Nov 12 2012 07:01:40 <client-ip> 51000 <asa-ip> 443 Teardown TCP connection 2889 for outside:<client-ip>/51000 to identity:<asa-ip>/443 duration 0:00:00 bytes 0 No valid adjacency 6 Nov 12 2012 07:01:40 <client-ip> 50999 <asa-ip> 443 Teardown TCP connection 2890 for outside:<client-ip>/50999 to identity:<asa-ip>/443 duration 0:00:00 bytes 0 No valid adjacency We finished the startup wizard and the anyconnect vpn wizard and here is the resulting configuration: Cryptochecksum: 12262d68 23b0d136 bb55644a 9c08f86b : Saved : Written by enable_15 at 07:08:30.519 UTC Mon Nov 12 2012 ! ASA Version 9.0(1) ! hostname vpn domain-name office.<redacted>.com enable password <redacted> encrypted passwd <redacted> encrypted names ip local pool vpn-pool 192.168.67.2-192.168.67.253 mask 255.255.255.0 ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! interface Vlan1 nameif inside security-level 100 ip address 192.168.68.250 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address <redacted> 255.255.255.248 ! ftp mode passive dns server-group DefaultDNS domain-name office.<redacted>.com object network obj_any subnet 0.0.0.0 0.0.0.0 pager lines 24 logging enable logging asdm informational mtu outside 1500 mtu inside 1500 icmp unreachable rate-limit 1 burst-size 1 no asdm history enable arp timeout 14400 no arp permit-nonconnected ! object network obj_any nat (inside,outside) dynamic interface timeout xlate 3:00:00 timeout pat-xlate 0:00:30 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00 timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00 timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute timeout tcp-proxy-reassembly 0:01:00 timeout floating-conn 0:00:00 dynamic-access-policy-record DfltAccessPolicy user-identity default-domain LOCAL http server enable http 192.168.68.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart crypto ipsec ikev2 ipsec-proposal DES protocol esp encryption des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal 3DES protocol esp encryption 3des protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES protocol esp encryption aes protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES192 protocol esp encryption aes-192 protocol esp integrity sha-1 md5 crypto ipsec ikev2 ipsec-proposal AES256 protocol esp encryption aes-256 protocol esp integrity sha-1 md5 crypto ipsec security-association pmtu-aging infinite crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set ikev2 ipsec-proposal AES256 AES192 AES 3DES DES crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP crypto map outside_map interface outside crypto map inside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP crypto map inside_map interface inside crypto ca trustpoint _SmartCallHome_ServerCA crl configure crypto ca trustpoint ASDM_TrustPoint0 enrollment self subject-name CN=vpn proxy-ldc-issuer crl configure crypto ca trustpool policy crypto ca certificate chain _SmartCallHome_ServerCA certificate ca 6ecc7aa5a7032009b8cebcf4e952d491 <redacted> quit crypto ca certificate chain ASDM_TrustPoint0 certificate f678a050 <redacted> quit crypto ikev2 policy 1 encryption aes-256 integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 10 encryption aes-192 integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 20 encryption aes integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 30 encryption 3des integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 policy 40 encryption des integrity sha group 5 2 prf sha lifetime seconds 86400 crypto ikev2 enable outside client-services port 443 crypto ikev2 remote-access trustpoint ASDM_TrustPoint0 telnet timeout 5 ssh 192.168.68.0 255.255.255.0 inside ssh timeout 5 console timeout 0 vpn-addr-assign local reuse-delay 60 dhcpd auto_config outside ! dhcpd address 192.168.68.254-192.168.68.254 inside ! threat-detection basic-threat threat-detection statistics access-list no threat-detection statistics tcp-intercept ssl trust-point ASDM_TrustPoint0 inside ssl trust-point ASDM_TrustPoint0 outside webvpn enable outside enable inside anyconnect image disk0:/anyconnect-win-3.1.01065-k9.pkg 1 anyconnect image disk0:/anyconnect-linux-3.1.01065-k9.pkg 2 anyconnect image disk0:/anyconnect-macosx-i386-3.1.01065-k9.pkg 3 anyconnect profiles GM-AnyConnect_client_profile disk0:/GM-AnyConnect_client_profile.xml anyconnect enable tunnel-group-list enable group-policy GroupPolicy_GM-AnyConnect internal group-policy GroupPolicy_GM-AnyConnect attributes wins-server none dns-server value 192.168.68.254 vpn-tunnel-protocol ikev2 ssl-client default-domain value office.<redacted>.com webvpn anyconnect profiles value GM-AnyConnect_client_profile type user username <redacted> password <redacted> encrypted tunnel-group GM-AnyConnect type remote-access tunnel-group GM-AnyConnect general-attributes address-pool vpn-pool default-group-policy GroupPolicy_GM-AnyConnect tunnel-group GM-AnyConnect webvpn-attributes group-alias GM-AnyConnect enable ! class-map inspection_default match default-inspection-traffic ! ! policy-map type inspect dns preset_dns_map parameters message-length maximum client auto message-length maximum 512 policy-map global_policy class inspection_default inspect dns preset_dns_map inspect ftp inspect h323 h225 inspect h323 ras inspect rsh inspect rtsp inspect esmtp inspect sqlnet inspect skinny inspect sunrpc inspect xdmcp inspect sip inspect netbios inspect tftp inspect ip-options ! service-policy global_policy global prompt hostname context call-home reporting anonymous Cryptochecksum:12262d6823b0d136bb55644a9c08f86b : end Clearly we are missing something, but the question is, what?

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  • Setting up vncserver on OpenSolaris zone

    - by k.park
    I am running OpenSolaris 5.10 and set up a sparse zone(inherits most of bin directories from global zone). I ended up copying many etc and var files from global zone, eventually most of the stuff(firefox,gvim, etc.) working through ssh via X11. However, I am having problems setting up vncserver on the zone. This is what I get if I tried to start the vncserver. vncext: VNC extension running! vncext: Listening for VNC connections on port 5911 vncext: created VNC server for screen 0 Fatal server error: could not open default font 'fixed' _X11TransNAMEDOpenClient: Cannot open /tmp/.X11-pipe/X11 for NAMED connection _X11TransOpen: transport open failed for local/%zone%:11 xsetroot: unable to open display '%zone%:11' _X11TransNAMEDOpenClient: Cannot open /tmp/.X11-pipe/X11 for NAMED connection _X11TransOpen: transport open failed for local/%zone%:11 _X11TransNAMEDOpenClient: Cannot open /tmp/.X11-pipe/X11 for NAMED connection _X11TransOpen: transport open failed for local/%zone%:11 _X11TransNAMEDOpenClient: Cannot open /tmp/.X11-pipe/X11 for NAMED connection _X11TransOpen: transport open failed for local/%zone%:11 vncconfig: unable to open display "%zone%:11" twm: unable to open display "%zone%:11" xterm Xt error: Can't open display: %zone%:11 I already chmoded /tmp/.X11-pipe with 777, and there is no pipe in /tmp/.X11-pipe or /tmp/.X11-unix directory. Here is my cat /etc/release: OpenSolaris 2009.06 snv_111b X86 Copyright 2009 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms. Assembled 07 May 2009 BRAND: ipkg

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  • SSRS 2005 inaccessible after install

    - by Gabriel Guimarães
    Hi I've just installed SQL 2005 and Database Engine is ok, however I can't access it for nothing. When I go to http://localhost/reports I get this prompt for a username and password and it fails with 401.1. When I tried to disable kerberos on the virtual directories, nothing changed. I've tried changing the auth to anonymous and get: Internet Explorer cannot display the webpage. When I access from another machine, I get the prompt only once and get this error. Internet Explorer cannot display the webpage. Can't access this with IE or SSMS 2005. If I try to access with Management Studio i get this error: TITLE: Microsoft SQL Server Management Studio The underlying connection was closed: An unexpected error occurred on a receive. (Microsoft.SqlServer.Management.UI.RSClient) ADDITIONAL INFORMATION: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. (System) An existing connection was forcibly closed by the remote host (System) BUTTONS: OK By the way the server info: its a Win 2003 R2 Standard with IIS 6 Can't seem to understand this. Does anyone have a hint?

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  • automatic IIS worker process recycle fails

    - by Sander Rijken
    The server is set to its default configuration to recycle the app pool every 1740 minutes. When this happens the following message is logged: A worker process with process id of '1234' serving application pool 'XX' has requested a recycle because the worker process reached its allowed processing time limit. Directly after logging this message, the web site is unresponsive. The only way to get it back online is by running iisreset manually. Does anyone know a fix for this behavior, other than turning the recycle feature off? Is it a known problem?

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  • SFTP only works occasionally

    - by 82din
    I suddenly get this error using SFTP: Status: Connecting to example.com... Response: fzSftp started Command: open "[email protected]" 22 Command: Pass: ********* Status: Connected to example.com Status: Retrieving directory listing... Command: pwd Response: Current directory is: "/root" Command: ls Status: Listing directory /root Error: Connection timed out Error: Failed to retrieve directory listing I tried using FileZila, Cyberduck, Shell (Terminal), same result. However, it worked fine today (just a few seconds) in Passive mode. I guess something changed in my network, so I have tried both: Active and Passive mode: Connecting to probe.filezilla-project.org Response: 220 FZ router and firewall tester ready USER FileZilla Response: 331 Give any password. PASS 3.6.0.2 Response: 230 logged on. Checking for correct external IP address Retrieving external IP address from http://checkip.dyndns.org:8245/ Checking for correct external IP address IP <external IP> big-bf-ccc-f Response: 200 OK PREP 49565 Response: 200 Using port 49565, data token 380352881 PORT 186,15,222,5,193,157 Response: 200 PORT command successful LIST Response: 150 opening data connection Response: 503 Failure of data connection. Server sent unexpected reply. Connection closed Because I'm working behind a router, I get my external IP from http://checkip.dyndns.org:8245/ I also tested different range of ports.

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  • VmWare / Citrix Xen type environment vs Ubuntu Cloud / Amazon EC2 type environment.

    - by Nick Gorbikoff
    Hello. A bit of background. We run a small in house data center: about 20 virtualized servers (Debian Lenny, Windows 2003, Windows xp and Windows 7 machines), in a Citrix Xen pool running on 3 host servers and a SAN, plus a few standalone machines running legacy or specialized software that can't be vritualized. There is a big push everywhere now to move to cloud so we considering Ubuntu Cloud. I was wondering what are the pros / cons of running virtualized pool vs cloud to run all those machines? Thank you

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  • IIS 7.5 doesn't load static html pages

    - by Kizz
    There is an IIS 7.5 freshly installed on a dedicated server. ASP.NET 4.0 Web app copied to its folder, new website is created on its own IP on post 80, IIS_IUSR and IUSR accounts have read/execute rights on site's folder, the site is assigned to its own Integrated app pool with 4.0 .NET (I tried Classic pool with the same results). The problem: when I try to access this web site, browser only loads content generated by .NET resources such as aspx pages, .axd files, etc. Static images, static js, css and html files are in the page source but IIS doesn't serve them. Dev tools in all browsers complain that all those static resources have been sent by the server with wrong content type (plain text instead of image, styles, etc). What do I do wrong?

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  • Outlook 2007 will not send/receive using RPC over HTTP to an exchange server.. works for other users

    - by bob franklin smith harriet
    I have an incredibly frustrating user issue that I have been unable to resolve for over a week, any ideas for this would be greatly appreciated. The user is having troubles using Outlook 2007 to send or receive emails over using RPC over HTTP (Outlook Anywhere) to an exchange server. Basically what happens, the connection will be establised and the user will be prompted for the username and password, those are submitted and then outlook tries to download emails which fails and the connection to the exchange server will remain unavailable. The machine can ping and everything to the exchange server there is no connection issue there. The setup worked fine for him up untill now and also works for possibly hundreds of other users using the exact same settings, also the same settings will work from the users iphone on the same internet connection, and from my own system using outlook. The exchange server has the webmail https feature and that can be logged into and send and receive emails fine. Steps taken so far: removing the .ost file for the account and allowing office to rebuild it (fixes the issue for a short period of time, then the same symptons occur) deleted exchange profile and recreated (no change in issue) uninstalled all antivirus and firewalls (no change in issue) removed all cached passwords (keymgr.dll) (no change in issue) removed all entries from the hosts file (no change in issue) uninstalled and reinstalled office 2007 (Temporary fix of issue) Installing Symantec Endpoint Client caused a lot of email scan popups to be displayed, after a reboot this stopped and a scan it picked a few trojans that it removed. This fixed the issue temporarily as well, the issue is back again now. I am completely out of ideas now, there seems to be nothing that can be done to fix this issue outside of rebuilding the PC which is a massive pandoras box I don't want to enter with this user. --- Update ---- Malware scans from multiple products have been run on the machine and all updates were installed. The real problem with this user is his distance from us, there is no way to supply a spare laptop or rebuild the machine currently.

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  • Emails sent to outlook.com not being delivered

    - by imukcedup
    I'm having an issue that is a little strange. I have a cPanel webserver that I own and have root. I was testing out emailing and noticed some issues. When I send an email to outlook.com address the email sends ok but nothing is recieved at the outlook mailbox. I also dont get an 'email delivery failure notification' in any mailbox. 2014-06-12 09:53:47 SMTP connection from [127.0.0.1]:45334 (TCP/IP connection count = 1) 2014-06-12 09:53:47 1Wv5Rr-0003rA-2K <= [email protected] H=localhost (ourdomain.com) [127.0.0.1]:45334 P=esmtpa A=dovecot_login:joe S=667 [email protected] T="This is a test message" for [email protected] 2014-06-12 09:53:47 SMTP connection from localhost (ourdomain.com) [127.0.0.1]:45334 closed by QUIT 2014-06-12 09:53:50 cwd=/var/spool/MailScanner/incoming/1029481 5 args: /usr/sbin/exim -C /etc/exim_outgoing.conf -Mc 1Wv5Rr-0003rA-2K 2014-06-12 09:53:50 1Wv5Rr-0003rA-2K SMTP connection outbound 1402581230 1Wv5Rr-0003rA-2K ourdomain.com [email protected] 2014-06-12 09:53:50 1Wv5Rr-0003rA-2K => Test Account <[email protected]> R=archive_outgoing_email T=archiver_outgoing 2014-06-12 09:53:52 1Wv5Rr-0003rA-2K => [email protected] R=dkim_lookuphost T=dkim_remote_smtp H=mx1.hotmail.com [65.54.188.110] X=UNKNOWN:AES128-SHA256:128 C="250 <[email protected]> Queued mail for delivery" 2014-06-12 09:53:52 1Wv5Rr-0003rA-2K Completed I have checked the outlook.com's spam folders and its not in there either. This is a new IP address allocation from our ISP and there was a block on gmail addresses, so we know it was used for spam. But with gmail we got a notifaction of failure and I know outlook/microsoft also send out notification. Does anyone know what could be happening here? Thanks

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  • Unable to connect to FTP server using Filezilla with router in-between

    - by pkswatch
    While connecting to my web server using filezilla, i am getting this error: Status: Resolving address of ftp.mysite.org.in Status: Connecting to 199.199.199.18:21... Status: Connection established, waiting for welcome message... Response: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ---------- Response: 220-You are user number 1 of 150 allowed. Response: 220-Local time is now 17:58. Server port: 21. Response: 220-This is a private system - No anonymous login Response: 220-IPv6 connections are also welcome on this server. Response: 220 You will be disconnected after 5 minutes of inactivity. Command: AUTH TLS Response: 234 AUTH TLS OK. Status: Initializing TLS... Error: GnuTLS error -9: A TLS packet with unexpected length was received. Status: Server did not properly shut down TLS connection Error: Could not connect to server I use a cradlepoint CTR35 wifi router to connect to the wired internet connection. When i connect to the same server without this router, the connection works flawlessly. So i guess there is some problem with my router firewall settings, but i dont know what! Can somebody help me out please? Note: The server requires EXPLICIT FTP OVER TLS and does not work with plain FTP sessions. And i can connect to other servers using plain FTP with the router in between.

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  • Route traffic from one VPN to a second VPN

    - by Dominic
    I have set up an OpenVPN server on my windows 7 64-bit PC. I also have a subscription to a VPN service. My aim is to be able to connect my android phone to the VPN server on my PC, and then route all traffic through the VPN service. I have a NetGear WPN824 router. I can get it working if I my phone is on my local network. Then I can connect my phone to the VPN server using the local IP address of my PC. In Network Connection in the control panel, I share the connection used by the VPN service with the connection used by the VPN server. Then when I browse the internet on my phone, all traffic goes through the VPN service. Very nice. But if my phone is outside my local network, so I have to connect my phone to the local VPN using my PC's external IP address, then this method doesn't work. If I connect my PC to the VPN service and then try to connect my phone to my own VPN, it just doesn't connect (the initial TLS handshake times out). If I connect my phone to the local VPN first, then this connection is lost as soon as I connect my PC to the VPN service. Does anybody know how I can get this working? Many thanks Dominic

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  • CryptSvc not matched by Windows 7 Firewall rule

    - by theultramage
    I am using Windows Firewall in conjunction with a third-party tool to get notified about new outbound connection attempts (Windows Firewall Notifier or Windows Firewall Control). The way these tools do it is by setting the firewall to deny by default, and to add an auditing policy to log blocked connections into the Security event log. Then they watch the log, and display notification about newly added entries. netsh advfirewall set allprofiles firewallpolicy blockinbound,blockoutbound auditpol /set /subcategory:{0CCE9226-69AE-11D9-BED3-505054503030} /failure:enable With this configuration in place, I now need to craft outbound allow rules for applications and system services. Here is the rule for CryptSvc, the service frequently used for certificate validation and revocation checking: netsh advfirewall firewall add rule name="Windows Cryptographic Services" action=allow enable=yes profile=any program="%SystemRoot%\system32\svchost.exe" service="CryptSvc" dir=out protocol=tcp remoteport=80,443 The problem is, this rule does not work. Unless I change the scope to "all programs and services" (which is really unhealthy), connection denied events like the following will keep appearing in the security log: Event 5157, Microsoft Windows security auditing. The Windows Filtering Platform has blocked a connection. Application Information: Process ID: 1476 (<- svchost.exe with CryptSvc and nothing else) Application Name: \device\harddiskvolume1\windows\system32\svchost.exe Network Information: Direction: Outbound Source Address: 192.168.0.1 Source Port: 49616 Destination Address: 2.16.52.16 Destination Port: 80 Protocol: 6 (<- TCP) To make sure it's CryptSvc, I have let the connection through and reviewed its traffic; I also configured CryptSvc to run in its own svchost instance to make it more obvious: ;sc config CryptSvc type= share sc config CryptSvc type= own So... why is it not matching the firewall rule, and how to fix that?

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  • Network bridge does not work on Windows 7

    - by D. Strout
    I am trying to use Windows 7 to bridge my wireless and wired connections together to get wireless on a second Windows XP computer (fresh install). The network bridge is created successfully, but when I connect the cable from the first computer with the bridged connections to the second one with just a wired connection, nothing happens. The second computer doesn't connect, and the first computer shows no sign of anything different. I tried bridging the connections of a third computer, and connecting this computer to the second computer. This worked (third computer bridged the wireless to the second computer). Thus, the problem must be with the first (Win 7) computer. However, I have no idea what the problem could be. All Internet Connection Sharing is turned off. Homegroup is disabled (it was originally enabled, I thought that might be a problem, so I disabled it). Also, I had VMWare fusion installed, and that created extra items in the "This connection uses the following items" box in the properties dialog. Thinking this might be causing issues, I uninstalled that too. Still, with everything I tried, I can't get it to work. Any suggestions? Edit: Another thing I noticed that might be worth mentioning: The network icon in the Win7 taskbar has a red X on it that means it's not connected, but when I click the icon, it says connected next to my wireless connection, and I am able to access the internet.

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  • Suggestions for accessing SQL Server from internet

    - by Ian Boyd
    i need to be able to access a customer's SQL Server, and ideally their entire LAN, remotely. They have a firewall/router, but the guy responsible for it is unwilling to open ports for SQL Server, and is unable to support PPTP forwarding. The admin did open VNC, on a non-stanrdard port, but since they have a dynamic IP it is difficult to find them all the time. In the past i have created a VPN connection that connects back to our network. But that didn't work so well, since when i need access i have to ask the computer-phobic users to double-click the icon and press Connect i did try creating a scheduled task that attempts to keep the VPN connection back to our office up at all times by running: >rasdial "vpn to me" But after a few months the VPN connection went insane, and thought it was both, and neither, connected an disconnected; and the vpn connection wouldn't work again until the server was rebooted. Can anyone think of a way where i can access the customer's LAN that doesn't involve opening ports on the router needing to know their external IP customer interaction of any kind Blah blah blah use vpn vnc protocol has known weaknesses you are unwise to lower your defenses it's not wise to expose SQL Server directly to the internet you stole that line from Empire Customer doesn't care about any of that. Customer wants things to work.

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  • Dynamic fowarding with SOCKS5 proxy [on hold]

    - by bh3244
    I'm building my own SOCKS5 client and HTTP library and am having trouble figuring out how things work with dynamic port forwarding. So far I can connect successfully with my SOCKS5 client, but from there on I am stuck. I am using the ssh -D command. Considering I have my local machine "home" and my server "server" and I wanted to use "server" as proxy for all connections I understand I would type ssh -D "localport" "serverhostname" on my local machine "home". This command I understand has ssh accept connections with the SOCKS5 protocol. So now if I want to connect to google.com(74.125.224.72:80) and issue a GET for the front page, I assume I would send the SOCKS5 client request and the server would respond back with a 0x00 "succeeded" and from then on I am connected and I would send the HTTP GET request and the server would respond back accordingly with the data. Now if I want to navigate to a different website, must I issue another SOCKS5 connection request for that sites IP/hostname? I'm confused if this is the way it is done, or if there is a program listening on the local port of the "server" and handling outgoing and incoming data. To reiterate: Do SOCKS5 proxies work by sending repeated SOCKS5 connection requests for different addresses or is there just one connection to a local port on "server" and another program on "server" handles the outgoing connection to the internet by using that local port to send and receive data to/from "home"?

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  • Configuring NAT and static IP on Cisco 877W

    - by David M Williams
    Hi all, I'm having trouble setting up a static IP reservation on a network. What I want to do is assign IP 192.168.1.105 to MAC address 00:21:5d:2f:58:04 and then port forward 35394 to it. If it helps, output from show ver says Cisco IOS software, C870 software (C870-ADVSECURITYK9-M), version 12.4(4)T7, release software (fc1) ROM: System bootstrap, version 12.3(8r)YI4, release software I have done this - service dhcp ip routing ip dhcp excluded-address 192.168.1.1 192.168.1.99 ip dhcp excluded-address 192.168.1.200 192.168.1.255 ip dhcp pool ClientDHCP network 192.168.1.0 255.255.255.0 default-router 192.168.1.1 dns-server 192.168.1.1 lease 7 ip dhcp pool NEO host 192.168.1.105 255.255.255.0 hardware-address 0021.5D2F.5804 ip nat inside source static tcp 192.168.1.105 35394 <PUBLIC_IP> 35394 extendable However, the machine is getting assigned IP address 192.168.1.101 not .105 ... any suggestions? Thanks !

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  • Windows Task Scheduler fails at sending e-mail

    - by Marki
    The error is 2147746321. I can see in the mailserver log that it tries, but the connection gets closed. Wed 2012-10-10 15:55:25: Session 990590; child 1 Wed 2012-10-10 15:55:25: Accepting SMTP connection from [x:49161] to [y:25] Wed 2012-10-10 15:55:25: --> 220 Mdaemon; Wed, 10 Oct 2012 15:55:25 +0200 Wed 2012-10-10 15:55:25: <-- EHLO x Wed 2012-10-10 15:55:25: --> 250-Hello x, pleased to meet you Wed 2012-10-10 15:55:25: --> 250-VRFY Wed 2012-10-10 15:55:25: --> 250-EXPN Wed 2012-10-10 15:55:25: --> 250-ETRN Wed 2012-10-10 15:55:25: --> 250-AUTH LOGIN Wed 2012-10-10 15:55:25: --> 250-8BITMIME Wed 2012-10-10 15:55:25: --> 250 SIZE 20971000 Wed 2012-10-10 15:55:25: <-- AUTH LOGIN Wed 2012-10-10 15:55:25: --> 334 VX...... Wed 2012-10-10 15:55:25: Connection closed Wed 2012-10-10 15:55:25: SMTP session terminated (Bytes in/out: 26/212) Googling does not reveal much except that it indeed "doesn't work" and Exchange pops up all over the place. This is no Exchange server. I just want a plain and straight SMTP connection to work. How? (I have tried running the task as normal user and as system account, no difference.)

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  • jdbc4 CommunicationsException

    - by letronje
    I have a machine running a java app talking to a mysql instance running on the same instance. the app uses jdbc4 drivers from mysql. I keep getting com.mysql.jdbc.exceptions.jdbc4.CommunicationsException at random times. Here is the whole message. Could not open JDBC Connection for transaction; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was25899 milliseconds ago.The last packet sent successfully to the server was 25899 milliseconds ago, which is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. For mysql, the value of global 'wait_timeout' and 'interactive_timeout' is set to 3600 seconds and 'connect_timeout' is set to 60 secs. the wait timeout value is much higher than the 26 secs(25899 msecs). mentioned in the exception trace. I use dbcp for connection pooling and here is spring bean config for the datasource. <bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource" > <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/db"/> <property name="username" value="xxx"/> <property name="password" value="xxx" /> <property name="poolPreparedStatements" value="false" /> <property name="maxActive" value="3" /> <property name="maxIdle" value="3" /> </bean> Any idea why this could be happening? Will using c3p0 solve the problem ?

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  • SSHing thru an HTTP proxy

    - by Siler
    Typical scenario: I'm trying to SSH thru a corporate HTTP proxy to a remote machine using corkscrew, and I get: ssh_exchange_identification: Connection closed by remote host Obviously, there's a lot of reasons this might be happening - the proxy might not allow this, the remote box might not be running sshd, etc. So, I tried to tunnel manually via telnet: $ telnet proxy.evilcorporation.com 82 Trying XX.XX.XX.XX... Connected to proxy.evilcorporation.com. Escape character is '^]'. CONNECT myremotehost.com:22 HTTP/1.1 HTTP/1.1 200 Connection established So, unless I'm mistaken... it looks like the connection is working. So, why then, doesn't it work via corkscrew? ssh -vvv [email protected] -p 22 -o "ProxyCommand corkscrew proxy.evilcorporation.com 82 myremotehost.com 22" OpenSSH_6.6, OpenSSL 1.0.1f 6 Jan 2014 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Executing proxy command: exec corkscrew proxy.evilcorporation.com 82 myremotehost.com 22 debug1: permanently_set_uid: 0/0 debug1: permanently_drop_suid: 0 debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.6p1 Ubuntu-2ubuntu1 ssh_exchange_identification: Connection closed by remote host

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  • VPN - local and remote networks IP collision

    - by Guido García
    I have created a VPN connection in Windows using the New Network Connection wizard that comes with Windows. It works without problems in most places, but there is one concrete place where, despite the connection to the remote public IP works fine, it is not able to validate the login/password and establish the VPN connection. In this place, the network is 10.0.0.x (the same I use in other places where I am able to connect). The remote network is 192.168.x.x, so I suspect there is some kind of IP collision, because before connecting, a traceroute to i.e. 192.168.0.40 does not fail. 1 4 ms 1 ms 1 ms LINKSYS [10.0.0.1] 2 5 ms 1 ms 1 ms 172.26.27.1 3 4 ms 5 ms 3 ms 192.168.1.100 ... (more) I can't modify the local network further than the first router (10.0.0.1). That is the only different I've found so far. Any idea about how to solve it? Thank you.

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  • Windows XP can't connect to wireless network

    - by mikez302
    I have a desktop computer with a wireless card, running Windows XP SP3. For a little while, I had a remote network connection set up for my job, but I didn't need the remote connection so I deleted it. Now, I am unable to connect to the internet at all from that computer through my wireless router. I can connect through my router using my laptop, and I can connect through my neighbor's router using my desktop, but for some reason I can't connect through my own router using my desktop. I see the "Wireless Network Connection 5" icon in my system tray, but it tells me it is not connected. When I click on the icon, I see a list of wireless networks, including my own, which is set up to automatically connect, although it doesn't. When I try to connect to my network on my own (by clicking on it, then clicking "Connect"), it asks me for my network password like it usually does. I see a box come up saying "Waiting for network to be ready..." and it hangs there. On the list of wireless networks, my network says "Acquiring network address" but it doesn't actually connect. How can I fix this? I tried rebooting my computer, repairing my connection, and restarting my router, and I am still having this problem.

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  • IIS/ASP.NET performance incident - Perfmon Current Annonymous Users going through roof but Requests/sec low

    - by Laurence
    Setup: ASP.NET 4.0 website on IIS 6.0 on Win 2003 64 bit, 8xCPUs, 16GB memory, separate SQL 2005 DB server. Had a serious slowdown today with any otherwise fairly well performing ASP.NET site. For a period of a couple of hours all page requests were taking a very long time to be served - e.g. 30-60s compared to usual 2s. The w3wp.exe's CPU and memory usage on the webserver was not much higher than normal. The application pool was not in the middle of recycling (and it hadn't recycled for several hours). Bottlenecks in the database were ruled out - no blocks occurring and query results were being returned quickly. I couldn't make any sense of it and set up the following Perfmon counters: Current Anonymous Users (for site in question) Get requests/sec (ditto) Requests/sec for the ASP.NET application running the site Get requests/sec was averaging 100-150. Requests/sec for ASP.NET was averaging 5-10. However Current Anonymous Users was around 200. And then as I was watching, the Current Anonymous Users began to climb steeply going up to about 500 within a few minutes. All this time Get requests/sec & Requests/sec for ASP.NET was if anything going down. I did a whole load of things (in a panic!) to try to get the site working, like shutting it down, recycling the app pool, and adding another worker process to the pool. I also extended the expiration time for content (in IIS under HTTP Headers) in an attempt to lower the number of requests for static files (there are a lot of images on the site). The site is now back to normal, and the counters are fairly steady and reading (added Current Connections counter): Current Anonymous Users : average 30 Get requests/sec : average 100 Requests/sec for ASP.NET : 5 Current Connections : average 300 I have also observed an inverse relationship between Get requests/sec & Current Anonymous Users. Usually both are fairly steady but there will be short periods when Get requests/sec will go down dramatically and Current Anonymous Users will go up in a perfect mirror image. Then they will flip back to their usual levels. So, my questions are: Thinking of the original performance issue - if w3wp.exe CPU, memory usage were normal and there was no DB bottleneck, what could explain page requests taking 20 times longer to be served than usual? What other counters should I be looking at if this happens again? What explains the inverse relationship between Get requests/sec & Current Anonymous Users? What could explain Current Anonymous Users going from 200 to 500 within a few minutes? Many thanks for any insight into this.

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  • Running IIS command on remote server via Powershell

    - by Paul Hunt
    I am trying to check if an IIS application pool exists on a remote server using a PowerShell script. The command I am running is: test-path "IIS:\AppPools\DefaultAppPool" If I run this script directly on the IIS server in question I get a response back of "True" so this tells me that I have IIS management correctly configure in PowerShell. However when I run the following script from a remote server I get a response of "False" invoke-command -ComputerName IISSERVER -ScriptBlock { test-path "IIS:\AppPools\DefaultAppPool" } I know that PowerShell remoting is correctly configured because I can run the following command and get a list of files invoke-command -ComputerName IISSERVER -ScriptBlock { get-childitems "c:\" } So why am I getting the wrong response about the existence of the application pool?

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