The Curious Engineer

All blogs / Networking

nettracer

learn.microsoft.com/en-us/archive/blogs/nettracer

NetworkingSecurityMicrosoft blogsMSDN archive

’10’15’20’25
Posts
63 from 31 May 2010 to 11 Jan 2018
Posting
archived, read-only
Kind
personal blog
Feed
https://learn.microsoft.com/en-us/archive/blogs/nettracer/feed.xml

2018 1

  1. Windows 2012 R2 server fails to establish outbound connections

2014 2

  1. Testing Lync server 2013 external URLs from Lync clients (external web service, meet, office webapps, lyncdiscover and dialin)
  2. Testing Exchange EWS service accessibility from internal/external Lync clients

2013 19

  1. How it works on the wire: IIS HTTP Client certificate authentication
  2. DNS SRV lookup from Powershell
  3. Testing STUN/TURN server connectivity from external networks through UDP 3478 by using Powershell
  4. External Lync 2013 clients cannot upload ppt or other files and whiteboard, poll, Q&A are greyed out on Lync client
  5. Decrypting SSL/TLS sessions with Wireshark - Reloaded
  6. Running Lync 2013 WebApp plugin in locked down Terminal server environments
  7. Event ID 56417 may be logged on Lync server 2013 intermittently
  8. Lync 2013 client may crash when Organization tab is clicked
  9. Cumulative update version information for Lync client and Lync server
  10. Exchange integration error on HP4120 desktop phones - A CA trust issue
  11. Lync 2010 response group members phones keep ringing even if the remote party hangs up the phone
  12. RDP connections might fail due to a problem with KB2621440 - MS12-020
  13. Desktop sharing fails between federated contacts running Lync 2010 clients
  14. External users cannot sign in to Lync 2010
  15. SCCM client push installation may fail due to firewall problems
  16. TMG Safe search feature may not work as expected sometimes
  17. Slow performance when accessing a Sharepoint 2010 portal through an ISA 2006 array
  18. Direct access client fails to connect to UAG DA server through IPHTTPS with various errors (0x800b0109 and 0x274c)
  19. TCP delayed ACK combined with Nagle algorithm can badly impact communication performance

2012 10

  1. Network trace analysis tricks III - How can I comment on packets in a network trace
  2. Network trace analysis tricks II - How can I focus on a certain packet range in a network trace?
  3. Network trace analysis tricks I - How can I see all TCP connection attempts in a network trace?
  4. Network traffic capturing hints
  5. When do we need to collect network traces?
  6. HTTPS access through TMG fails from a certain VLAN with a very unusual error: FWX_E_SEQ_ACK_MISMATCH
  7. Outlook anywhere (RPC over HTTPS) access to Exchange 2010 server via TMG 2010 fails after some time
  8. Getting HTTP 500 Internal server error when accessing a published web site through ISA 2004
  9. Outlook MAPI connection to Exchange 2010 CAS fails through UAG 2010 direct access tunnel
  10. PDF file corrupted when downloaded through TMG server

2011 4

  1. Internet Explorer doesn't display ISA or TMG error message 502 when connecting to HTTPS servers
  2. TMG initiates active FTP connections to external servers even though it's configured for passive FTP - a problem with FTP over HTTP
  3. Java applications and TMG access rules that require authentication
  4. Anatomy of a DoS attack that exploits WebDAV vulnerability in Apache Web server

2010 27

  1. How it works under the hood: A closer look at TCPIP and Winsock ETL tracing on Windows 7 and Windows 2008 R2 with an example
  2. SCCM packages may be distributed slower than standard file copy (xcopy/Windows Explorer)
  3. SQL Browser may not be reachable through firewalls when it runs on a cluster
  4. Bogus IP packets and Wireshark
  5. How to decrypt an SSL or TLS session by using Wireshark
  6. Why are local resources accessed slowly when loopback or local IP address is used whereas accessing the same resources over the network works fine?
  7. Effects of incorrect QoS policies: A story behind a slow file copy...
  8. Where have those AFD driver related registry (DynamicBacklogGrowthDelta / EnableDynamicBacklog ...) keys gone?
  9. Does sqllogship.exe have anything to do with web servers in the internet? Story behind CRL check for certificates ...
  10. Where are my packets? Analyzing a packet drop issue...
  11. Is it real or Matrix? Some facts about network traces...
  12. Excessive ARP requests, is it malware or legitimate activity?
  13. Why does it take too long to retrieve data from SQL server over a WAN connection?
  14. Exchange servers send ICMP and UDP packets to clients or Domain Controllers, why?
  15. Why should a DC contact clients in the domain?
  16. Have you ever wanted to see which Windows process sends a certain packet out to network?
  17. Why doesn't Windows 2008 server negotiate TCP MSS smaller than 536 bytes?
  18. Why can't we access NLB Clusters from remote subnets?
  19. Why does anonymous PIPE access fail on Windows Vista, 2008, Windows 7 or Windows 2008 R2
  20. NULL credentials might be used when accessing remote systems from a process running under Local System account
  21. Do we support "Policy based routing" on Windows Server operating systems?
  22. Is MaximumBlockSize registry key supported on Windows 2008 R2 RTM WDS server?
  23. Why doesn't IPReassemblytimeout registry key take effect on Windows 2000 or later systems?
  24. Things that you may want to know about TCP Keepalives
  25. Do you still set EnablePMTUDiscovery to 0?
  26. Syn attack protection on Windows Vista, Windows 2008, Windows 7, Windows 2008 R2, Windows 8/8.1, Windows 2012 and Windows 2012 R2
  27. Welcome