Search found 49 matches

by silvio
2020/11/16 14:54:03
Forum: CentOS 7 - Networking Support
Topic: sshd forwarding problems after latest update
Replies: 7
Views: 341

Re: sshd forwarding problems after latest update

Hi Trevor and Jlethone,

thanks for the infos that was new for me.
@Trevor, what is with "disable all unused services"?
@Jlethone, we use systemd-networkd but i think this will be the same ...

I will do it on my todo list.

Silvio
by silvio
2020/11/13 13:22:13
Forum: CentOS 7 - Networking Support
Topic: sshd forwarding problems after latest update
Replies: 7
Views: 341

Re: sshd forwarding problems after latest update

Hi Aks, the system has no IPV6 address and IPV6 ist disabled on the system: /etc/sysconfig/network NETWORKING_IPV6=no IPV6INIT=no and this makes me wondering about the IPv6 error. With "all" and "local" did i mean, my thinking was that "ALL" includes "local" also. With this thinking i was wondering ...
by silvio
2020/11/09 07:03:43
Forum: CentOS 7 - Networking Support
Topic: sshd forwarding problems after latest update
Replies: 7
Views: 341

Re: sshd forwarding problems after latest update

Thanks for the idea, the mesaage was also strange for me beacuse i connected over IPv4 and get an IPv6 error ... But i found another solution: If you read the man for sshd_config you can find: "AllowTcpForwarding Specifies whether TCP forwarding is permitted. The available options are yes (the defau...
by silvio
2020/11/06 20:43:31
Forum: CentOS 7 - Networking Support
Topic: sshd forwarding problems after latest update
Replies: 7
Views: 341

sshd forwarding problems after latest update

Hi, we use autossh tunnels for some user to connect to or MySQL server. The system ist running since ~2years without any greater problems but today a user send my an info that he can not connect to the MySQL server. First idea was that the autossh tunnel was not running but it was. After some checks...
by silvio
2020/05/20 11:48:34
Forum: CentOS 8 - General Support
Topic: Centos8 & mysql 8.0.17
Replies: 2
Views: 339

Re: Centos8 & mysql 8.0.17

Hi, some questions from my side. Was the test running on the same machine as the first test? Is it the mysql 8.0 release from CentOS? Have you other software or processes running and the load/ram usage/ io ... was higher at that moment? Have you looked in the mysql-slow log? Have you changed the mys...
by silvio
2020/05/04 10:37:50
Forum: CentOS 8 - General Support
Topic: Solved: ssh pubkey auth with ssh-rsa failed
Replies: 6
Views: 1589

Solved: ssh pubkey auth with ssh-rsa failed

Found it: The Client systems use SHA256 keys. So server needs rsa-sha2-256 as allowed key type. The logmessage is a little bit confusing for me if the server write ssh-rsa in the log and means rsa-sha2. If we have different options for these key types in the config then we should have different mess...
by silvio
2020/05/04 09:39:15
Forum: CentOS 8 - General Support
Topic: Solved: ssh pubkey auth with ssh-rsa failed
Replies: 6
Views: 1589

Re: ssh pubkey auth with ssh-rsa failed

I changed every option in the the cryptofile step by step and after every change i restarted the ssh server and checked. It stopped working as i changed the -oPubkeyAcceptedKeyTypes part. With -oPubkeyAcceptedKeyTypes=ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ssh-rsa public key auth failed with: usera...
by silvio
2020/05/01 09:40:10
Forum: CentOS 8 - General Support
Topic: Solved: ssh pubkey auth with ssh-rsa failed
Replies: 6
Views: 1589

Re: ssh pubkey auth with ssh-rsa failed

Thanks for the answer.
Yes it helps but but it does not explain why i can not use ssh-rsa with my config.
I want to understand where my problem is and where i think wrong.

Silvio
by silvio
2020/04/30 11:22:43
Forum: CentOS 8 - General Support
Topic: Solved: ssh pubkey auth with ssh-rsa failed
Replies: 6
Views: 1589

Re: ssh pubkey auth with ssh-rsa failed

I found the reason for the second crypto policy. The policy is include by an OpenScap rule which hardens the sshd crypto policy. If i delete the second policy: 'CRYPTO_POLICY='-oCiphers=aes128-ctr,aes256-ctr,aes128-cbc,aes256-cbc -oMACs=hmac-sha2-256,hmac-sha2-512 -oGSSAPIKeyExchange=no -oKexAlgorit...
by silvio
2020/04/30 08:56:24
Forum: CentOS 8 - General Support
Topic: Solved: ssh pubkey auth with ssh-rsa failed
Replies: 6
Views: 1589

Solved: ssh pubkey auth with ssh-rsa failed

Hi, i have a strange problem with ssh public key auth under CentOS8. I can login with with username and password but if i want to use an public key it failed. In my log i can see this: userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedKeyTypes [preauth] If i check the supported key types: [root...

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