Skip to main content

Windows Server Can't Connect through Network but Client Can Connect to Server

itemprop="text">

Edited now that I understand more the
issue:



My Windows 2008R2 server is having a
strange networking problem. I can access the server via RDP, File Sharing, etc.




But from the server, I can't connect
to anything on the network - I can't connect to the email server, web servers,
nothing!



I could not find anything in the event
log that is related.



As I have 200+ users using
the file share from it, I don't want to restart it until way late at night when nobody
is using it.



So I'm wondering if anybody knows
what I should look for, anything I can do, etc, to remedy this without
restarting.



Also, what could be the cause - I
obviously don't know that restarting it will resolve
anything.




Earlier post for
info



A Windows 2008R2 server is having issues
accessing domain resources. For example when logged on to this server, if I
try:



\server1\ I get Error code 0x80004005 -
Unspecified Error



gpupdate fails with "The
processing of Group Policy failed. Windows could not resolve the user name. This could
be caused by one of more of the following:
a) Name Resolution failure on the
current domain controller.
b) Active Directory Replication
Latency..."




Name resolution works
using nslookup but seem to fail when going through a Windows
application.



For example, telnet into my email
server fails from this server but works from other computers.



It's not a problem with the network access list
blocking access. Even accessing resources on the same VLAN does not
work.



It's not only name resolution because
accessing the servers by IP Address also does not
work.



And it's not a general connectivity issue
either since I'm accessing the server via RDP and I can use remote administration
tools.




I can even access the windows
shares on this server from my computer.



But from
this computer, I can't access other servers. It also fails in querying Active Directory
to validate some authentication
requests.



EDIT:
An interesting thing
is that if I do:



telnet emailserver 25

I get connect failed.




And
I also get the same if I do
telnet 10.5.2.1
25



But I can ping it. It's not an issue with the
email server as I can telnet into it from another server in the same
subnet.



It's not a general broad networking
issue either since the windows shares on this server are being accessed by many users
right now and I'm currently accessing it via RDP as stated
earlier.



Accessing a samba share of a Linux
server by IP Address also does not work. Seems like this may not be related to the
domain controller.




Accessing the
servier's own shares does not work either when done from the server
itself.



Answer




Restarting the server handled the issue
without doing anything else. Does not tell me what happened however. If anybody has an
idea of what could have created this situation, let me know. Otherwise, rebooting is the
solution to this until someone finds a better one.



Comments

Post a Comment

Popular posts from this blog

linux - iDRAC6 Virtual Media native library cannot be loaded

When attempting to mount Virtual Media on a iDRAC6 IP KVM session I get the following error: I'm using Ubuntu 9.04 and: $ javaws -version Java(TM) Web Start 1.6.0_16 $ uname -a Linux aud22419-linux 2.6.28-15-generic #51-Ubuntu SMP Mon Aug 31 13:39:06 UTC 2009 x86_64 GNU/Linux $ firefox -version Mozilla Firefox 3.0.14, Copyright (c) 1998 - 2009 mozilla.org On Windows + IE it (unsurprisingly) works. I've just gotten off the phone with the Dell tech support and I was told it is known to work on Linux + Firefox, albeit Ubuntu is not supported (by Dell, that is). Has anyone out there managed to mount virtual media in the same scenario?
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits,
Post a Comment
Read more

apache 2.2 - Server Potentially Compromised -- c99madshell

So, low and behold, a legacy site we've been hosting for a client had a version of FCKEditor that allowed someone to upload the dreaded c99madshell exploit onto our web host. I'm not a big security buff -- frankly I'm just a dev currently responsible for S/A duties due to a loss of personnel. Accordingly, I'd love any help you server-faulters could provide in assessing the damage from the exploit. To give you a bit of information: The file was uploaded into a directory within the webroot, "/_img/fck_uploads/File/". The Apache user and group are restricted such that they can't log in and don't have permissions outside of the directory from which we serve sites. All the files had 770 permissions (user rwx, group rwx, other none) -- something I wanted to fix but was told to hold off on as it wasn't "high priority" (hopefully this changes that). So it seems the hackers could've easily executed the script. Now I wasn't able
Post a Comment
Read more