Questions tagged [block]

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Shared block device file system (cluster file system without networking)

Is there any file system that can be mounted multiple times and supports concurrent file access for Linux? Basically I want something like a cluster file system but without the need to have a running ...
fungs's user avatar
  • 61
2 votes
0 answers
1k views

What setting causes openvpn client to log on connection: "block IPv4 DNS requests from other apps"?

What setting causes openvpn to block third party DNS request, the windows client logs on connection: block IPv6 DNS requests from other apps netsh interface ip set dnsservers 5 static 192.168.100.1 ...
Jesus Marval's user avatar
2 votes
0 answers
86 views

duplicate block device and UUID

Today I ran fsck on two partitions of our Ubuntu 16.04 server. Fsck has fixed various problems and afterwards I rebooted the server. After rebooting there were duplicate block device assignments with ...
Peter's user avatar
  • 21
2 votes
0 answers
525 views

Apache PHP REST API handle/block web attack attempts

We're currently running a PHP API (all URL's get rewritten to index.php for route-handeling) on an Apache Debian server. Edit: (I think I might have landed on the wrong StackExchange for this question,...
Bert Maurau's user avatar
2 votes
0 answers
505 views

Partition block size different from device's and stacked LVM volumes ones

I have a pair of HP ML350 G6 servers with LSI MegaRAID 9266-4i+CacheVault driving Supermicro CSE836E16 enclosures via SAS bracket, filled with WD RE 3TB SATA drives. On these are configured a RAID10 ...
silopolis's user avatar
  • 470
1 vote
1 answer
388 views

Nginx - Block access to portion of path only, to all but specified IP range

I'm trying block access to a portion of a path via Nginx, unless the source IP is within a specified range. I think I've got this mostly working through much trial and error, but I seem to run into ...
Ren's user avatar
  • 11
1 vote
0 answers
274 views

VMware esxi host partedUtil sector bit and block size?

Alright, things i did are: studying https://kb.vmware.com/s/article/1036609 and https://kb.vmware.com/s/article/2004299 , and also googled some other information about the "partedUtil" in ...
user53815's user avatar
1 vote
2 answers
2k views

Linux swapping blocks system (freeze)

I have a problem with my Debian Servers. We run 4 different server which all have Intel CPUs and 128GB of RAM. Two of them run Wheezy, two of them run Jessie. We run a Java software on those systems ...
mr.simonski's user avatar
0 votes
0 answers
88 views

Squid not blocking access to websites

I'm on Ubuntu Server 22.04.3 LTS and I'm trying to learn a bit about Squid. I installed Squid v5.7 and one of my tasks is to deny access to a list of URL's. I modified "squid.conf" file and ...
João Sacramento's user avatar
0 votes
0 answers
31 views

Trouble using nginx location block to exclude certain files from fastcgi cache

I've searched and tried lots of iterations of an nginx location block to exclude certain files from the fastcgi cache, but I can't get it to work. I understand using a location block is preferable to ...
jamminjames's user avatar
0 votes
0 answers
207 views

Postfix block spam email address

I have an smtp relay server on ubuntu 22.04.Config below: main.cf(Postfix 3.6.4) # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name ...
Tarik's user avatar
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0 votes
0 answers
692 views

How do I figure out what prevents incoming connections on a certain port?

I would like to enable SSH connections on an additional port on my machine, for reasons. It is a physical machine (not a VM), running Devuan GNU/Linux Chimaera (~= Debian 11.0 without systemd). The ...
einpoklum's user avatar
  • 1,722
0 votes
0 answers
56 views

ban `./ANY/IN` DNS queries using iptables

I am getting some denied DNS queries I'd like to ban using iptables, to avoid bind to send augmented replies to the server ... and that they're simply annoying in my logs. (.): query (cache) './ANY/IN'...
Avenger's user avatar
  • 21
0 votes
0 answers
437 views

Bind/Fail2ban how to reject requests from certain domain

Today I got my VPS stucked. Centos 7, 4 cores, Bind 9.11. From ssh I got Message from syslogd@host at Jul 18 09:46:16 ... kernel:NMI watchdog: BUG: soft lockup - CPU#0 stuck for 41s! [f2b/observer:...
Daniel Franco's user avatar
0 votes
1 answer
788 views

Fail2ban with Firewalld on RHEL 8 - Fail2ban seemingly blocks IPs, but they are not really blocked

I'm running fail2ban on RHEL 8 using firewalld. According to the fail2ban log (with DEBUG level) it blocks IP addresses without any error, but in fact there are no such rules in firewalld and nftables....
user766753's user avatar
0 votes
0 answers
262 views

How should I block traffic to destination port using iptables?

I have received an abuse from my server provider and one thing which is the same is that the target on destination IPs is the SMB (445) port . How can I block destination traffic to port 445 using ...
Mr Pro's user avatar
  • 33
0 votes
1 answer
1k views

Can nginx block ~20000 ips?

Can nginx block ~20.000 ips? And should i block ips (https://lists.blocklist.de/lists/all.txt) with nginx?
Nguyen Tien Huy's user avatar
0 votes
1 answer
253 views

Is there a way to block internet access using iptables for particular access points

In our company we have several access points. For some of them in the production area it should be disallowed to use them for accessing the internet. The router we have has (at least) two interfaces: ...
code-chicken's user avatar
0 votes
1 answer
853 views

Emails go to spam folder on email server with MS Exchange

Emails from redwerk.com email server goes in spam folder on server with MS Exchange. I had performed all kinds of server checkings (SPF, DKIM, Blacklists). Had performed checkings on https://...
Bogdan Kovalenko's user avatar
0 votes
0 answers
312 views

Dealing with big blocklists: Is it better to DNS Blackhole or block at firewall level

Setting up some new protections for networks and I've found myself with two different options. Due to the size of the lists (easily 2,500,000+ domains) is it better to setup DNS servers to blackhole ...
Jason's user avatar
  • 3,941
0 votes
2 answers
922 views

How to block access to web-hosting servers?

Is there a way to block all web-hosting servers trying to access my server? There are a lot of hacked websites used to do damage to my server and only common thing is IP of agressor (many of IP's) is ...
wjk's user avatar
  • 11
0 votes
0 answers
525 views

domain redirect to STRATO.NL managed server (block?)

I have a managed server from strato.nl I have a domain on OVH and I want for my OVH domain to redirect to the managed server. I have configured the DNS so that xxx.ovh domains points to the IP of the ...
Jorge Mendes's user avatar
0 votes
1 answer
50 views

Avaya switch - need to block port 25

Situation: In QA-DEV Lab environment I need to block port 25 for the egress traffic on AVAYA ERS5510-48T switch. Question: How do I do it using EDM aka Web Interface? Couldn't find anything in ...
dwerniczek's user avatar
0 votes
0 answers
694 views

How to block device trying to connect to your wifi

In my log-file I see that hostapd shows that a device is continuously trying to connect and disconnect which slows down the network & pollutes the log-file and. Anyone knows how to block a device ...
user avatar
0 votes
0 answers
169 views

server 2012 not receiving data on specific port

I installed a windows server 2012 r2 standard + sql 2008 r2 standard on a new dell server for a client of mine as regular workgroup file server (not acting as a Domain Controller) 3 months ago and all ...
fish72's user avatar
  • 1
0 votes
0 answers
316 views

Xen bridge - block traffic from port range - iptables / ebtables

I use Xen with bridge interface : - eth0 - viifbr0 - Name of VM interface : vifv10XX.0 Do you know if it is possible to block output traffic from source port range for a domU please ? If yes, can ...
Puma's user avatar
  • 1
0 votes
1 answer
214 views

Linux block access to router login page

I am running virtual machines with Gnome desktops on Debian Squeeze and Wheezy. The virtual machines are on a different subnet than the host. I would like to block the virtual machines from ...
Senrabdet's user avatar
  • 101
0 votes
1 answer
325 views

Remote to remote block level replication

I have to sync 2 iSCSI LUNs together at block-level (mandatory), asynchronous, only in the night, I found some tools to do it when Remote to Local or Local to Remote, but I cannot install anything on ...
Mykeul's user avatar
  • 101
0 votes
1 answer
474 views

Active FTP client blocked on Windows XP

Summary We have a FTP server (running in active mode). We have an FTP client which is connecting to the server, carrying out a task and then closing the connection. The FTP Client can perform this ...
user avatar
-1 votes
2 answers
76 views

Block a computer from all but 1 or 2 websites?

I'm setting up a computer for our machine shop that is intended for them to only get to a couple sites they may need while working. It needs to still be on our network so they can look at files saved ...
Uncle Bajubjubs's user avatar