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1
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1answer
27 views

User blocked in AD by some windroid device

We have a user that is constantly blocked. We checked the logs in the domain controllers and all the information shown is that a WINDROID device is the source. How can I know which device is causing ...
1
vote
0answers
21 views

Haproxy: reject traffic by user agent from file

I am trying to reject connections from specific user agents (by matching a substring of the user-agent header) using an haproxy ACL with -f option to read from a file. However it is not working, it ...
0
votes
1answer
34 views

Is it possible to block HTTP traffic from specific machines?

I have some web crawlers, and a specific website seems to be blocking traffic temporarily after some time. The thing is, even though all clients have the same external IP address (they access the ...
-6
votes
1answer
69 views

Block EXE in a machine [closed]

How can i block all executables in a machine unless i verify it. I have multiple clients and i want to do it as programatically (I am using Visual-Studio-2010). It can be done through registry using ...
0
votes
0answers
28 views

Block empty user-agents nginx?

My site was under attack and I noticed all the user agents are blank. How can I block this with my nginx? I have no idea what to block, if this is an empty user agent or what.
0
votes
1answer
68 views

Apache not serving static content concurrently

When tried to open multiple pages from Codeigniter based custom CMS on different tabs, the first tab loads, while the subsequent tabs wait for the first tab to complete, then sequence follows ...
-1
votes
1answer
182 views

How to block videos by title on youtube using Squid?

For example,i want to block videos that contain the word "cat" in the title. I also do not want the blocked videos appearing in: -Recommended Channels tab -Recommended/related videos -Search ...
0
votes
4answers
14k views

Fix/Bypass “Cannot connect to the real website-blocked” error in Google Chrome with OpenDNS blocking

I have a large problem with Chrome in my organisation. I use DNS to manage web site blocking, for sites which are not appropriate and are potentially a risk to the organisation where I do this. I ...
0
votes
0answers
39 views

IIS / ARR: How to allow remote clients to a particular path, local connections to all

We are currently using IIS 7 + ARR 3 in order to generally block access to a particular Site except its '/Hub' sub path (using the steps outlined at ...
0
votes
0answers
512 views

How can I block “zenmate” plugin from Windows Server 2008 VM?

I am curious as to how I can block people from accessing my websites using the "Zenmate" Google Chrome extension? The sites are hosted on Windows Server 2008. These people are using the extension for ...
4
votes
1answer
517 views

How to check if a process is non-blocking in linux without using a stack tracer?

A multi-cpu server is running several processes. One process has a thread that should always be in a spinning state, using 100% of the CPU it's been assigned. My current method (besides asking the ...
2
votes
2answers
66 views

Can I restrict access to an apache website to a client whose IP address is on an ISP who allocates IP addresses via DHCP?

I have a website which I want to use for administrative purposes. I need to be sure that only people from certain machines can log on. the problem is they are on ISP networks. Will I truely get the ...
1
vote
0answers
65 views

Apache Bot Blocking when using <Location> element

I was looking through my access logs today and concluded I should probably make an effort to deal with bad traffic. I am trying to use this list (https://github.com/bluedragonz/bad-bot-blocker) as as ...
2
votes
2answers
162 views

Rejecting traffic where ACCEPT header is empty on favicon.ico requests

As part of filtering out potential harmful traffic, I currently reject traffic where $_SERVER["HTTP_ACCEPT"] is empty. I notice from my logs that a fair number of requests have been rejected due to ...
1
vote
2answers
899 views

MySQL SELECT query hangs

On my server I have 6 MySQL databases. They all power Wordpress websites. For some reason, 2 of these databases are not accessible. To my knowledge they use INNODB, but I can't confirm it as even ...
-1
votes
1answer
38 views

statistics on port 22 blocking [closed]

What are the statistics on port 22 blocking by firewalls in small and medium sized enterprises? We have a product that a customer installs on a PC, which communicates via ssh to our cloud server. It ...
0
votes
1answer
471 views

Allow visits only via domain, block by ip address

I am trying to block people from accessing my server via my ip address. Ideally I would like them to only be able to access it using my domain name. I have searched Google and unable to find ...
0
votes
0answers
305 views

Windows Server 2003 - Block outgoing traffic of program

I need to run a program on Windows Server 2003. I need all in AND out traffic to AND from this program to be blocked, EXCEPT if the origin/destination is 127.0.0.1. I have to only block this one ...
0
votes
3answers
243 views

Website filtering for OpenVPN clients

I am currently trying to block some websites by their domain names for all the clients of my OpenVPN server. My first idea was to use the /etc/hosts file. But, its effects seem to be limited to the ...
2
votes
2answers
2k views

Sonicwall App Control Advanced

I have a custom application that accesses a remote range of IP addresses, lets say for example 206.0.0.0 - 206.255.255.255, this is UDP based traffic. The issue is, Sonicwall NSA has been configured ...
1
vote
1answer
1k views

Block SSH access from specific countries

I found this handy script online, and would like to modify it to only block SSH access but I don't know anything about iptables and Im afraid Ill kill my system as i have no physical access to it. ...
0
votes
1answer
143 views

How to check what process is blocking local linux server (Slackware)

I have a Slackware linux server at my work. This is network, database and web server. Our main web application is used as a backend application to administrate our public website (which is frequently ...
0
votes
1answer
98 views

Is there a chance to block images spiders / bots on dedicated servers without using robots.txt or .htaccess?

We know that we can block certain spiders from crawling websites pages using robots.txt or .htaccess or maybe via the Apache configuration File httpd.conf. But that requires to edit may be a large ...
1
vote
2answers
296 views

How to diagnose Windows hangs - which resource is blocked?

We have a Windows 7 Pro machine running Apache/php/postgres processing Ajax requests under a constant load (several every second). Its also running various other applications, which perform lots of ...
0
votes
1answer
74 views

How to block access from all hosting services? (like gutenberg.org) [closed]

gutenberg.org blocks access to all hosting services as per http://www.gutenberg.org/error403.php How to achieve this? Is there a list of hosting ips? Also, would these be added to CSF?
3
votes
1answer
301 views

Apache IPv4 deny directive blocks IPv6 addresses

Edit I have thought that excessive number of "deny" lines are confusing apache into blocking unlisted IPv4 addresses. But comment of @Ladadadada made me pinpoint the exact issue. You can read my old ...
0
votes
1answer
163 views

Debian Dmesg Error - What does this output mean regarding an outage on eth1?

The tale of the NIC that quit; I have chucked the end of dmesg output from a server into pastebin; This server (PowerEdge 1850) has two NICs, eth0 and eth1. eth1 has a couple of VLANs defined on it, ...
0
votes
1answer
113 views

Blocking websites on Windows OS machine: registry vs firewall

When attempting to block a particular website (e.g. www.facebook.com) on a Windows XP 64bit Professional SP3 machine there are a number of methodologies that can be employed. Some methods are clearly ...
0
votes
1answer
984 views

Nginx php-fpm pool being blocked and stop responding

I'm having some issues with requests for pages not getting a response after requests take a long time to process. I have nginx setup to use php-fpm. I have two pools setup in PHP-FPM. One pool for ...
-5
votes
1answer
81 views

Services and protocols to restrict torrent traffic at a university campus [closed]

Which service has the ability of blocking bit-torrent traffic on a subnet network, snmp or bgp? Are these protocols useful for such blocking ?
1
vote
0answers
126 views

What can lock the only MySQL db process?

A plain old "delete single record" statement froze on me. Suspecting a (dead)lock issue, I checked the process list to see what blocks the delete. The delete statement was the only running db process ...
-1
votes
1answer
240 views

blocking search engine bots directadmin [closed]

I want to block some bad search engine bots like MJ12bot, YandexBot and Ezooms. We have like 200 users in the directadmin environment, and we want to install a "plugin" or "mod" to block those request ...
1
vote
1answer
2k views

Blocking requests from specific IPs using IIS Rewrite module

I'm trying to block a range of IP that is sending tons of spam to my blog. I can't use the solution described here because it's a shared hosting and I can't change anything to the server ...
0
votes
2answers
509 views

Can I use an IP-list include file for iptable blacklisting?

I would like to block all countries except mine in iptables, that is a list with about 100.000 Entries. How can I define this blacklist file in a script, so iptables blocks all those IP ranges? ...
1
vote
1answer
241 views

Intercepting/blocking outgoing emails from mailx + phpmailer

I was wondering if anyone knows of a way to ideally intercept (if not block) mailx from sending emails? The situation is that we have a development server (CentOS) that hosts the current version of ...
0
votes
2answers
1k views

Block port 25 on SBS 2003; allow Exchange

I know this is a noob question, but I haven't been able to find an answer on exactly what I'm looking for. My mail server was recently blacklisted due to being infected with cutwail. Part of the ...
4
votes
1answer
2k views

Block a website on HTTPS and allow it on HTTP (to enforce Safesearch)

I would like to block some websites on their HTTPS version and allow them on HTTP. The main websites involved are Youtube and Google Images/Videos. This is because on the HTTP version, I can enforce ...
0
votes
2answers
2k views

On a router, how do I block wan access for a particular machine without blocking its access to the local network?

On my tp-link TL-WR1043ND router I want to prevent a particular machine from having access to the WAN while still allowing that machine to access other machines on the LAN. My assumption is that I ...
-1
votes
1answer
908 views

How to Block all websites except one website in a LAN?

How to Block all websites except one website in a LAN of Ubuntu 11.10 Clients ?
2
votes
2answers
4k views

Separate Nginx access log file for certain requests only

As far as I can see Nginx supports by default 2 log files: error_log (tracks issues related to the Nginx server itself) and access_log (tracks requests processed by Nginx). Whilst it is possible to ...
1
vote
1answer
219 views

How to block the Java installer?

We send PC's out to customers that need a very specific version of Java installed; specifically 6.26. I already disable the Java updater but I was wondering if I could block the customer from ...
0
votes
1answer
45 views

Blocking locks and performance

My main question is if high amounts of blocking locks degrade Oracle server performance. I understand that it can hurt users performance, but does it cause high load on Oracle itself?
1
vote
3answers
183 views

IPTables not blocking some connections

I am using IPtables for a basic firewall, I have placed some blocks on those IP's attempting FTP, SSH conenctions, etc. I have accept rules at the top for good measure to ensure that my monitoring ...
0
votes
1answer
257 views

synchronization between two (or more) file servers : block open files to avoid conflicts

"Short version": When a user opens a file on a local share, other users can open only in read-only, until it is closed. I want this to be true for the remote copy of the file: read-only when the local ...
1
vote
3answers
5k views

How Do I Block an IP Address on ubuntu?

I have configured Ubuntu machine as router. Steps of NAT configuration are given below: #iptables -F #iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE #iptables-save ...
2
votes
1answer
447 views

Block UDP traffic by rate/string-match on Windows 2008

I am administrating a Windows 2008 server (64-bit). It is being subjected to a focused set of DOS attacks where UDP packets are sent to a specific port and contain a specific string. What I need to ...
2
votes
1answer
105 views

Block specific client on CentOS by client name

I am looking at my Apache access log and there is suspicious activity from several ip ranges. What they have in common is that all of them are identified as "Allegro-Software-WebClient/4.07". Is ...
1
vote
1answer
589 views

Nginx: protect directory and files

I wrote this to prevent the directory "download" to be accessed but from the IP 1.2.3.4. location ~ /folder/download { allow 1.2.3.4; deny all; return 403; } However, the directory ...
3
votes
1answer
3k views

Linux kernel crash - any ideas?

Been getting these runaway conditions on a lightly loaded vps (debian squeeze kernel 2.6.38-bpo.2-amd64, 2GB, SSD) - top load is nothing , then jumps to 30.0 & everything grinds to a halt. I'm ...
8
votes
2answers
7k views

MySQL InnoDB database 'hangs' on selects

I'm trying to fix MySQL configuration on our server. Our app's specifics is that a lot of data is stored in single table (currently over 300 millions of rows). This table is used often for inserts ...