How do I insert the iptables rule below using firewalld?Im moving up from CentOS 6 to 7 on an office gateway and Im trying to get OpenVPN working to allow home workers to access PCs at the office. Ive got it all working but only by manually insert..
If you use CentOS as a mail server, you can now get the latest version of Dovecot (the IMAP and POP3 server) at the new Dovecot repo.———— Forwarded Message ..
Im deploying a CentOS 7 box as a gateway and Im trying to figure out how to set up traffic shaping. Historically Ive used the Wondershaper script but apparently its not deprecated in favor of superior queue management. I havent yet found a packaged solut..
Im setting up a new mail server (dovecot + sendmail + SpamAssassin + ClamAV + MIMEDefang) to replace an aging CentOS 6 box. The new box is a low-end PowerEdge with an SSD, 3 4TB red drives on a PERC RAID controller which Ill probably set up RAID5, ..
Im trying to figure out how to use firewalld on CentOS 7 to block access to SSH (on a custom port to control log bloat) and SMTP submission except for specific source addresses, using ipset. I havent been able to figure out how to combine a port num..
I want to set up rsyncd to expose the whole drive read-only to BackupPC running on another machine. So I need to set selinux to allow this. According to the Fedora wiki I can do so like this:setsebool -P rsync_disable_trans 1But when I run the comm..
I saw mention of dnf in a blog article about installing a package on CentOS. Further investigation revealed that Fedora is replacing yum with dnf, apparently a new and better yum. But it wasnt clear if dnf was a drop-in replacement or if some migrat..
The subject says it all. I got CentOS 6.4 installed and then converted it to boot into the Xen kernel, using the C6.4 system as its dom0. But now Im uncertain how to put a C6.4 domU on the result. Which tools are re..
I ran yum update the other day on my dom0 and let it pull a new kernel. The RPM install scriptlet runs /sbin/new-kernel-pkg (part of the grubby package) to update grub.conf. It writes a new record to boot the Linux kernel instead of Xen. It would..
I just installed CentOS 6.3 on a Tyan motherboard and the NIC stopped talking after about 2 days of operation. Its connected to a Cisco 2950 switch. /var/log/messages has this in it:nv_stop_tx: TransmitterStatus remained busyI simply did an ifdown e..