9 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hello,
I am under ubuntu 16.04 now. I am going to add a repository into server.
After apt-get install app_name, I see below lines inside a file :
excerpted from config file:
..
..
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256::RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
..
..
... (9 Replies)
Discussion started by: baris35
9 Replies
2. Shell Programming and Scripting
Hi,
I am trying to complete my bash script in order to find which SSH servers on LAN are still active with the ssh keys, but i am frozen at this step:
#!/bin/bash
# LAN SSH KEYS DISCOVERY SCRIPT
</etc/passwd \
grep /bin/bash |
cut -d: -f6 |
sudo xargs -i -- sh -c '
&& cat... (11 Replies)
Discussion started by: syrius
11 Replies
3. UNIX for Beginners Questions & Answers
Hi,
I want to validate ssh connection one after one for multiple servers..... password less keys already setup but now i want to validate if ssh is working fine or not...
I have .sh script like below and i have servers.txt contains all the list of servers
#/bin/bash
for host in $(cat... (3 Replies)
Discussion started by: sreeram4
3 Replies
4. Linux
I try to enable only secure high ciphers.
With those
smtpd_tls_auth_only = yes
smtpd_tls_mandatory_ciphers = high
smtpd_tls_protocols = SSLv3, TLSv1, !SSLv2
smtpd_tls_mandatory_exclude_ciphers = aNULL
Disable sslv2 but nessus say weak and medium ciphers
still enabled,how to enable only... (0 Replies)
Discussion started by: Linusolaradm1
0 Replies
5. Shell Programming and Scripting
I have write a script which contains
ssh -p 12345 dcplatform@10.125.42.50
ssh 127.0.0.1 -p 5555 "$CMD"
ssh root@$GUEST_IP "$CMD"
before I use public key, it works well, now I want to change to "expect", BUT I don't want to change above code and "parameter position"
I can post a... (1 Reply)
Discussion started by: yanglei_fage
1 Replies
6. Cybersecurity
Hello,
I recently had a Retina scan of my system and there are some findings I do not understand.
SSL Week Cipher Strength Supported - Retina has detected that the targeted SSL Service supports a cryptographically weak cipher strength... Disable ciphers that support less than 128-bit... (4 Replies)
Discussion started by: stringman
4 Replies
7. OS X (Apple)
Hi All
*
Need some help on testing if a server supports weak ciphers .
Here is the command I ran :
openssl s_client -connect HOSTNAME:443 -cipher LOW:EXP
result :
Connected : err num=110
openssl s_client -connect HOSTNAME:8000 -cipher LOW:EXP
result :
Connected : err... (1 Reply)
Discussion started by: noufel
1 Replies
8. Cybersecurity
Hi All
*
Need some help on testing if a server supports weak ciphers .
Here is the command I ran :
openssl s_client -connect HOSTNAME:443 -cipher LOW:EXP
result :
Connected : err num=110
openssl s_client -connect HOSTNAME:8000 -cipher LOW:EXP
result :
Connected : err... (0 Replies)
Discussion started by: noufel
0 Replies
9. Shell Programming and Scripting
I am using Net::SSH::Expect to connect to the device(iLO) with SSH. After the $ssh->login() I'm able to view the prompt, but not able to send any coommands.
With the putty I can connect to the device and execute the commands without any issues.
Here is the sample script
my $ssh =... (0 Replies)
Discussion started by: hansini
0 Replies
ssh-keysign(1M) ssh-keysign(1M)
NAME
ssh-keysign - ssh helper program for host-based authentication
SYNOPSIS
ssh-keysign
ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication
with SSH protocol version 2. This signature is of data that includes, among other items, the name of the client host and the name of the
client user.
ssh-keysign is disabled by default and can be enabled only in the global client configuration file /etc/ssh/ssh_config by setting Host-
basedAuthentication to yes.
ssh-keysign is not intended to be invoked by the user, but from ssh. See ssh(1) and sshd(1M) for more information about host-based authen-
tication.
/etc/ssh/ssh_config
Controls whether ssh-keysign is enabled.
/etc/ssh/ssh_host_dsa_key
/etc/ssh/ssh_host_rsa_key
These files contain the private parts of the host keys used to generate the digital signature. They should be owned by root, readable
only by root, and not accessible to others. Because they are readable only by root, ssh-keysign must be set-uid root if host-based
authentication is used.
ssh-keysign will not sign host-based authentication data under the following conditions:
o If the HostbasedAuthentication client configuration parameter is not set to yes in /etc/ssh/ssh_config. This setting cannot be overri-
den in users' ~/.ssh/ssh_config files.
o If the client hostname and username in /etc/ssh/ssh_config do not match the canonical hostname of the client where ssh-keysign is
invoked and the name of the user invoking ssh-keysign.
In spite of ssh-keysign's restrictions on the contents of the host-based authentication data, there remains the ability of users to use it
as an avenue for obtaining the client's private host keys. For this reason host-based authentication is turned off by default.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsshu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
ssh(1), sshd(1M), ssh_config(4), attributes(5)
AUTHORS
Markus Friedl, markus@openbsd.org
HISTORY
ssh-keysign first appeared in Ox 3.2.
9 Jun 2004 ssh-keysign(1M)