05-17-2016
Hello mnnn,
Quote:
rsync: getaddrinfo: feed.openvas.org 873: Temporary failure in name resolution
Let's try one more step here(I am not *NIX expert but trying to troubleshoot here). Above error may be because of file
/etc/resolv.conf, could you please check name servers entry in it and do let us know how it goes then.
Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello,
I am using dual boot of linux, one is ubuntu and the other is one is centos.
I have three NIC's and only one of them connected with cable.
The thing is that when I boot from the ubuntu, it does recognize it and I am connected to the Internet.
When I boot from the centos I am not... (6 Replies)
Discussion started by: programAngel
6 Replies
2. Linux
how i can setup socks 5 in centos? (0 Replies)
Discussion started by: hesamii
0 Replies
3. IP Networking
how i can setup socks 5 in centos? (1 Reply)
Discussion started by: hesamii
1 Replies
4. Red Hat
I am having a bit of trouble getting my CENTOS 6.5 DNS server to work correctly in our testlab environment. Lab network is 10.8.0.0/24 in which we all access from 10.7.0.0.0/24 && 10.0.0.0/24. Here are my configs:
options {
listen-on port 53 { 127.0.0.1; 10.8.0.19;};
#listen-on-v6 port 53 {... (2 Replies)
Discussion started by: metallica1973
2 Replies
5. Linux
I attempted to update Python on my CentOS 5.6 VM and have encountered some issues after then. Initially yum wouldn't work, but I have resolved that.
However, now I am unable to access the Network Configuration section under setup.
When I do select this option I see this at the command line:
... (2 Replies)
Discussion started by: crmpicco
2 Replies
6. Cybersecurity
Hello,
Today, i just updated my Openvas server for latest NVT, portsname and scapdata but after that i am not able to login to my openvas instance.
Below command i fired to get this done.
openvas-nvt-sync
openvas-certdata-sync
openvas-portnames-update
openvas-scapdata-sync... (0 Replies)
Discussion started by: sunnysthakur
0 Replies
7. UNIX for Beginners Questions & Answers
Hallo to everyone.From sometime i have problems with my asterisk pbx on cent os which is in corosync cluster mode with resource groups.The problem is for time the cluster just swap the active one with the other and the only messages in \var\log\messages is that bond0:link status defenitly down for... (0 Replies)
Discussion started by: evolintend
0 Replies
8. UNIX for Advanced & Expert Users
Hello,
We are migrating our gateways from CentOS 6 to CentOS 7 and for setting up a transparent proxy using squid and Firewalld i am using below configuration.
#Firewalld configurations
firewall-cmd --permanent --zone=public --add-forward-port=port=80:proto=tcp:toport=3128:toaddr=LAN_IP... (4 Replies)
Discussion started by: sunnysthakur
4 Replies
9. Linux
Hello,
Did anyone setup a CentOS7 as a gateway (with squid transparent proxy).
I am trying to do so but not able to setup.
I setup squid , iptables (using it instead of firewalld) and all the necessary IPtables rules but nothing work.
It work previously but access.log of squid not getting... (4 Replies)
Discussion started by: sunnysthakur
4 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)