fail2ban error with firewalld (f2b-

I have been using fail2ban for months without any issues but after a CentOS upgrade it stopped working. It seems it doesn’t create the iptables entries. I have already tried restarting fail2ban, restarting the VPS, and all the basic stuff. The relevant errors are: In /var/log/fail2ban.log: 2020-01-12 12:15:52,994 fail2ban.actions [496]: NOTICE [postfix-reject-dynamo] Restore Ban 12.160.87.219…

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Non-conformable arrays in neural network – neuralnet package

I am trying to create a neural network using this code: countries=read.table(‘countries.txt’,header =TRUE,sep=’\t’,quote=””,dec=”,”) #install.packages(“neuralnet”) library(neuralnet) trainset<-countries[1:85,] testset<-countries[86:118,] retea<-neuralnet(Tari.europene~Enrolement_P+Enrolement_S, trainset, hidden=4, lifesign=”minimal”, linear.output=FALSE, threshold=0.1) and I get this error: hidden: 4 thresh: 0.1 rep: 1/1 steps: Error in x – y : non-conformable arrays Also , the results for this line are: dput(trainset[c(“Tari.europene”, “Enrolement_P”, “Enrolement_S”)]) I…

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How do I authenticate with ed25519 using the MariaDB client?

Whilst launching MariaDB via Docker using MYSQL_ALLOW_EMPTY_PASSWORD I was prompted to run /usr/bin/mysql_secure_installation. This makes sense but (like others) I prefer configuring things non-interactively so started looking into the SQL commands this script runs. One of the comments to this article includes the following SQL: UPDATE mysql.user SET plugin = ‘mysql_native_password’ WHERE User = ‘root’;…

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Any download command is terminated with this error – “Errors were encountered while processing: linux-image-4.15.0-20-generic”

Reading package lists… Done Building dependency tree Reading state information… Done The following packages were automatically installed and are no longer required: android-libext4-utils android-libselinux android-libsepol libf2fs0 Use ‘sudo apt autoremove’ to remove them. The following additional packages will be installed: libappindicator1 libglade2-0 libindicator7 Suggested packages: indicator-application The following packages will be REMOVED: linux-image-4.15.0-20-generic The following…

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