09-30-2011
10 More Discussions You Might Find Interesting
1. AIX
Hi ,
I am having problem,users are not able to login through ssh or telnet.Only we can login as root user in console.
Restarted telnet and sshd ,no luck. Any ideas.
AIX -- 5.2 ML 07
Thanks,
MNK (1 Reply)
Discussion started by: mnkfre
1 Replies
2. Linux
Hi Team,
I have joined the Suse Linux Server in my domain. I am not able update the DNS but I am able to join the domain. net ads testjoin gives me Join ok.
even net ads dns register -P results to DNS update failed.
wbinfo -u and wbinfo -g also not working.
Samba Configuration:
... (1 Reply)
Discussion started by: naree
1 Replies
3. Red Hat
HI Experts,
I am having dificulty in loggin on the server via ssh-tectia. Sometimes, i can login for like 3 seconds the it shows error "disconnected from network"
Other's can login on this server via ssh-tectia without any problem, BUT i can successfully connect to other servers .
... (2 Replies)
Discussion started by: EngnrRG
2 Replies
4. Red Hat
Ok, Im trying to get NFS working on my RHEL 5 box, apparently i can use the box as a client, but not as a server. If it helps i cant ssh into the box (server), but as a client ssh works fine. Ive configured
server:
/etc/hosts.allow:
all : all
all :all@all
setup my /etc/exports file... (4 Replies)
Discussion started by: drs.grid
4 Replies
5. Solaris
Unable to login to solaris9 server using SSH mode for root as well as genreal logins. Please find the configuration file .
oss@HYDOHS02:ssh> cat sshd_config
#
# Copyright 2005 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#pragma ident "@(#)sshd_config ... (6 Replies)
Discussion started by: hydoss1
6 Replies
6. HP-UX
Hello friends,
I need to set PATH variable for all HP-UX users. I tried to implement it using /etc/profile and /etc/sshrc both none of them work.
I don't see sshrc file anywhere.
Please advise!
TIA (4 Replies)
Discussion started by: prvnrk
4 Replies
7. AIX
We are having occasional problems accessing some AIX servers. When this happens we cannot ssh to the server in question or login via HMC console terminal window. We can ssh some commands to the server and get responses but other commands just hang, ssh serverA date returns the date, ssh serverA... (5 Replies)
Discussion started by: Kierong
5 Replies
8. Red Hat
Hello all, I am having a bit of an issue on my Spacewalk installation. Some amplifying information is that it is Spacewalk 2.3 installed on a RHEL 6 machine and I am attempting to install/update a RHEL 5 channel/repository. I am fairly new to Spacewalk so I am still learning but this is what I... (3 Replies)
Discussion started by: jstone4646
3 Replies
9. AIX
Hi guys
when ever i tried to connect aix server in my institute through ssh terminal the
pop is coming like network is unreachable .Am using MacBook air
the other guys who are using putty software in windows they can easily login in tho the server through remotely . Is there any one can... (3 Replies)
Discussion started by: aashishb007
3 Replies
10. Ubuntu
HI all
i need to connect to about 900 cisco routers and switch to do some configs changes. the issue i am having is that half the devices have one set of username and password and the other half have another username and password. From expect or bash script i can ssh into a device and make... (1 Reply)
Discussion started by: quintin
1 Replies
LEARN ABOUT CENTOS
tpm_quote_tools
TPM QUOTE
TOOLS(8) TPM QUOTE TOOLS(8)
NAME
TPM Quote Tools
PROGRAMS
tpm_mkuuid, tpm_mkaik, tpm_loadkey, tpm_unloadkey, tpm_getpcrhash, tpm_updatepcrhash, tpm_getquote, tpm_verifyquote
DESCRIPTION
TPM Quote Tools is a collection of programs that provide support for TPM based attestation using the TPM quote operation.
A TPM contains a set of Platform Configuration Registers (PCRs). In a well configured machine, some of these registers are set to known
values during the boot up process or at other times. For example, a PCR might contain the hash of a boot loader in memory before it is
run.
The TPM quote operation is used to authoritatively verify the contents of a TPM's Platform Configuration Registers (PCRs). During provi-
sioning, a composite hash of a selected set of PCRs is computed. The TPM quote operation produces a composite hash that can be compared
with the one computed while provisioning.
To use the TPM quote operation, keys must be generated. During provisioning, an Attestation Identity Key (AIK) is generated for each TPM,
and the public part of the key is made available to entities that validate quotes.
The TPM quote operation returns signed data and a signature. The data that is signed contains the PCRs selected for the operation, the
composite hash for the selected PCRs, and a nonce provided as input, and used to prevent replay attacks. At provisioning time, the data
that is signed is stored, not just the composite hash. The signature is discarded.
An entity that wishes to evaluate a machine generates a nonce, and sends it along with the set of PCR used to generate the composite PCR
hash at provisioning time. For this use of the TPM quote operation, the signed data is ignored, and the signature returned is used to val-
idate the state of the TPM's PCRs. Given the signature, the evaluating entity replaces the nonce in the signed data generated at provi-
sioning time, and checks to see if the signature is valid for the data. If so, this check ensures the selected PCRs contain values that
match the ones measured during provisioning.
A typical scenario for an enterprise using these tools follows. The tools expect AIKs to be referenced via one enterprise-wide Universally
Unique Identifier (UUID). The program tpm_mkuuid creates one.
For each machine being checked, an AIK is created using tpm_mkaik. The key blob produced is bound to the UUID on its machine using
tpm_loadkey. The public key associated with the AIK is sent to the entities that verify quotes. Finally, the expected PCR composite hash
is obtained using tpm_getpcrhash. When the expected PCR values change, a new hash can be generated with tpm_updatepcrhash.
The program to obtain a quote, and thus measure the current state of the PCRs is tpm_getquote. The program that verifies the quote
describes the same PCR composite hash as was measured initially is tpm_verifyquote.
SEE ALSO
tpm_mkuuid(8), tpm_mkaik(8), tpm_loadkey(8), tpm_unloadkey(8), tpm_getpcrhash(8), tpm_updatepcrhash(8), tpm_getquote(8), tpm_verifyquote(8)
Oct 2010 TPM QUOTE TOOLS(8)