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Top new questions this week:

Docker swarm routing mesh does not forward UDP traffic after container restart

I have setup a docker stack with a couple services. One of the service is publishing a UDP port that it is listening for traffic on (it happens to be a Wireguard endpoint, but I don't think this is ...

docker docker-swarm lvs  
user avatar asked by Daniel Baulig Score of 3

fail2ban bans IP addresses, yet they still appear in access.log

This is my filter: [Definition] failregex = <HOST> .* "POST /customer/account/create.*$ <HOST> .* "GET /customer/account/create.*$ and this the corresponding jail: [...

nginx iptables docker fail2ban  
user avatar asked by digijay Score of 3
user avatar answered by AlexD Score of 10

Squid file descriptors on Sles15 cannot be increased beyond 4096

I'm testing squid server on Sles15. In Squid 4.17 on Sles12, we modify the squid.conf with: vsa11074425:/tmp # grep desc /etc/squid/squid.conf # Squid max_filedescriptors max_filedescriptors 65536 ...

squid  
user avatar asked by EisenWang Score of 2

How to get SPF alignment to pass DMARC for a subdomain?

I have the following DNS configuration: $ dig +noall +answer -t txt example.com example.com. 626 IN TXT "v=spf1 +a +mx include:sendgrid.net include:_spf.google.com -all" $ dig +noall +...

spf dkim dmarc sendgrid  
user avatar asked by tftd Score of 1
user avatar answered by Appleoddity Score of 2

How to route traffic from physical to virtual interfaces when using MACsec?

The setup: 3 Linux Ubuntu 18.04 virtualized in GNS3 all connected to a Ethernet hub, lets call them VM1, VM2 and VM3, each VM has a physical interface called ens3 and a IP Address from DHCP Server ...

iptables routing linux-networking macsec  
user avatar asked by Reinis Score of 1
user avatar answered by A.B Score of 0

temperature of the Broadcom 10Gb LAN controller (BCM57416) on Supermicro motherboards

I am looking for information from people with systems with Supermicro motherboards with a Broadcom 10Gb NIC controller chip (BCM57416). Specifically, I would like to find out the NIC temperature IPMI ...

local-area-network nic supermicro broadcom  
user avatar asked by cen2rocky Score of 1

How can I make MIAB automatically copy all mail sent via SMTP into the sent folder of the sender's account?

I run Mail-In-A-Box on my mail server and one of my clients is using a specialized application to send messages via SMTP from their account on my server. When they used their own Gmail account to send ...

email postfix smtp  
user avatar asked by Del tree Score of 1

Greatest hits from previous weeks:

How do I verify the speed of my NIC?

I just installed a new gigabit network interface card (NIC) in Linux. How do I tell if it is really set to gigabit speeds? I see ethtool has an option to set the speed, but I can't seem to figure ...

linux gigabit-ethernet ethtool  
user avatar asked by User1 Score of 192
user avatar answered by Khaled Score of 265

Disk full, du tells different. How to further investigate?

I have a SCSI disk in a server (hardware Raid 1), 32G, ext3 filesytem. df tells me that the disk is 100% full. If I delete 1G this is correctly shown. However, if I run a du -h -x / then du tells me ...

linux ext3 disk-space-utilization scsi  
user avatar asked by initall Score of 179
user avatar answered by OldTroll Score of 131

Can scp copy directories recursively?

Currently I can only copy a single .tar file. But how can I copy directories recursively with scp?

linux scp  
user avatar asked by kernel Score of 791
user avatar answered by dmourati Score of 1285

How do you add a Windows environment variable without rebooting?

I would like to add an Environment variable to a Windows machine (desktop or server) and be able to use it without rebooting that machine. Say you have a production server which hosts a variety of ...

windows environment-variables  
user avatar asked by Chad Braun-Duin Score of 230
user avatar answered by Charlie Score of 195

How can I get the size of an Amazon S3 bucket?

I'd like to graph the size (in bytes, and # of items) of an Amazon S3 bucket and am looking for an efficient way to get the data. The s3cmd tools provide a way to get the total file size using s3cmd ...

amazon-web-services amazon-s3 disk-space-utilization aws-cli  
user avatar asked by powdahound Score of 393
user avatar answered by Christopher Hackett Score of 220

What does "TTL expired in transit" mean on a ping attempt?

We get the message “TTL expired in transit” when we try to ping to a server in a different network segment. When we run tracert, 4 ip addresses repeat themselves indefinitely: 14 60 ms 59 ms ...

networking tcp ping ttl  
user avatar asked by Leonardo Score of 60
user avatar answered by Saurabh Barjatiya Score of 37

How to determine the hostname from an IP address in a Windows network?

My LAN has 50 Windows hosts. At the Windows command line I try ping to get the IP address of a running Windows machine. The question is how to get hostname of a specific IP address in the same ...

linux windows networking ip hostname  
user avatar asked by billyduc Score of 91
user avatar answered by Phil Swiss Score of 98

Can you answer these questions?

Upgrading mysql - can not start server 8.0.35 => 8.0.36

After upgrading mysql the server can not start? Upgrade apt update && apt upgrade 8.0.35 => 8.0.36 OS: Debian bookworm error Tablespace 123588, name 'sys/sys_config', file './sys/...

mysql debian  
user avatar asked by clarkk Score of 1

Hiding Script Host error when network path not found

I have a Group Policy logon script that is located at and runs from the NETLOGON share. When a user is off domain and logs on, an error is displayed that the path is not found. This frightens and ...

group-policy logon-scripts  
user avatar asked by NetAdmin Score of 1

fio gives an unexpected IOPS number

While running tests with fio, we encountered unexpected behavior of it. Test config: [global] iodepth=64 direct=1 ioengine=libaio group_reporting time_based runtime=6000 numjobs=1 rw=randrw ...

storage storage-area-network iops fio  
user avatar asked by it800 Score of 1
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