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Yeah, we use ipset for very specific sets like SPAMHAUS and some others. However, the main rule set was setup some time ago for all the different country ranges, plus many single addresses for high...

Finally determined the cause of this network bandwidth degradation. It was caused by a large IPv4 IPTABLES rules file. The SAMBA servers aren't directly accessible by outside world anyway, so they...

Wow, ok, looks to be a config issue. Can't imagine what config item it would be, but I booted up "20.04 Try Ubuntu" and sure enough full speed:

mike@ubuntu:~$ iperf3 -V -b 1Gbps -c 10.1.10.50...

Yeah, I've tried swapping cables with faster running systems and checking the LEDs on the switch which indicate 1000Mbps. I even put in an Asus 10-Gigabit XG-c100c NIC. The ethertool gives this:
...

Sorry for the delay. I got sidetracked with other issues. I began exploring the driver issue along with a new nic. I bought a cheap Startech ST1000SPEXI, which uses the i210 chipset. ...

Is it all Intel NIC drivers or just specially for I218?

Yeah, I tried a bunch of cables. I even swapped in the cables from the MacOS and Win10 servers that seem to have better performance. Nothing changed. However, I think you guys are right that it is...

no, The GS 108 is just an unmanaged 8-port switch. There are no settings like that. The LEDs indicate that all of the servers connected to it are connected at 1Gbps. Again, the MacOS and the Win10...

Some good suggestions on what to look at for sure. I took TheFU's minimal conf suggestion and surprisingly it made no apparent difference in performance. Which is a big indication that the conf...

yes, something could be wrong with the system, but what? If there are better settings for SAMBA I would like to see them. Also, if there are, why are they not the defaults. This performance issue...

Thanks for everyone's help. I haven't tried NFS, but it seems hard to implement on Windows. I tried some of the TheFu's numbers, but nothing seems to help so far. It seems like Windows native SMB...

OMG, the performance of sftp is even worse. Can't get more than 4MB/s. At least I could get 11MB/s with Samba. Judging from all of the replies on other forums, it just seems that that's about the...

I've noticed that no matter what I do, I can only get read/write performance of around 11MB/s with my Ubuntu 20.04 file server running Samba Version 4.11.6-Ubuntu using Ubuntu, MacOS 10.15, Windows...

This has been an issue for a long time now. For several years of Mysql on Ubuntu, we have not been able to change the datadir from /var/lib/mysql to something else on another drive. This recent...

I tracked the problem down to /usr/share/netfilter-persistent/plugins.d/15-ip4tables. This script has a "set -e" that causes the script to abort as soon as there is a problem. Apparently, the...

yes, those commands work for netfilter-persistent for me too. However, the problem is when the system reboots. netfilter-persistent service is supposed to automatically reload the rules on reboot...

there seems to be something wrong during boot with netfilter-persistent. It won't start durint the boot process, but then after the boot, I can start it from the command ok. Might be another...

so then, netfilter-persistent.service basically doesn't work in 18.04? Is anybody working of fixing this? Is there a bug ticket opened on it?

I found a couple of utilities that actually do seem to control Network Manager configurations from the command line. Apparently, you can use either "nmcli" or "ip" commands. However, the changes...

I don't know how to set alias IP addresses from the command line. At one time, you could define alias IP addresses in /etc/network/interfaces and then use ifconfig to to start/stop them. ...

yes, the firewall starts just fine after every reboot.



● ufw.service - Uncomplicated firewall
Loaded: loaded (/lib/systemd/system/ufw.service; enabled; vendor preset: enabled)
Active:...

Has anybody else had a problem with the ufw where a working rule no longer works after rebooting. I have ssh on an additionsal port in addition to 22/tcp, say for example 2200, which I have a ufw...

yeah, it actually seems intermittent. in fact, most of the time it's ok, the tab-completion/bash-completion works just fine. it normally works even with '.' in the path. If the problem was related...

yeah, it actually seems intermittent. in fact, most of the time it's ok, the tab-completion/bash-completion works just fine. it normally works even with '.' in the path. If the problem was related...

Has anybody else noticed that on occasions unity, bash, and ssh freeze when you issue some kind of bash command (e.g. ls) on a folder that is mounted with Samba CIFS. It appears that there is some...