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Questions tagged [block]

135 questions
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Deciphering kpartx output

I hope I've posted this in the proper place, if I haven't then please advise me on where to move the post. I've tried deciphering the kpartx output myself but now I'm sort of stuck and in need of guidance. I lack knowledge in many areas and I'm…
Mårten Olsson
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Block Clients based on RTT

I am running an application on my Debian server, which uses IPv4 and UDP for data communication. I would like to block every client for a short while, that has a Round Trip Time above 140ms. Unfortunately i am not able to implement such a rule…
robusto
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How do you mitigate LAN clients from participating in DDOS?

Most references I've read about mitigating DDOS involve edge routers. However, is there anything you can do to mitigate your LAN clients from unknowlingly participating in a DDOS ? Like blocking broadcast packets ? This is presuming you don't have…
user403619
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How to block a small IP range in csf

I'm looking for a way to block a small ip range in csf, e.g. 151.80.31.103 to 151.80.31.115 I know how to block each ip by issuing a cmmand csf -d IP, but it is a lot more effective to have a way to block a small set of ip range, as the given…
aye
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Block p2p downloading in my office?

Well, I'm not sure how ethical this is, but I already posted this question to superuser and a poster suggested I move it over here. Very sorry if I'm breaking anybody's heart. Anyway, here's the question: I work in an education office in a third…
Andrew
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Block direct IP connections to Apache web server

I need to figure out how to block direct IP access to my website. Example: I want it so that when people type my IP address 1.2.3.4 into the browser it doesn't work, but when they type www.example.com it does work. I am using Apache 2.4.9, and my…
Ben Stapleton
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Block request to certain url call from server

i have website running , that call url of some other website is there any way to block call to particular website. For eg : inside some part of my website a call is made to url like abc.com/xxx/aa Please not abc.com is 3rd party website url no i…
mdeveloper
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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 which is heavily using memory and could eat up all…
mr.simonski
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CentOS/Linux Block External Port

Suppose I have an internal service running on port 7676, how would I (On CentOS) block port 7676 from external sources, so that it can only be accessed locally - AKA 127.0.0.1, not using, for example, 64.222.33.44 - the external IP.
Terra
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Debian 7.2 (wheezy) - Block domain

0 down vote favorite A few days ago I figured out that someone was trying to get access to my mailserver, obviously to send spam emails through. After some research I found out that the sender uses a domain, refering to my server. Like you bind your…
Thyrador
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DNSMasq wildcard top level domain/suffix

I'm running DD-WRT on my router and I need to block certain websites and all their potential suffixes, is that possible or would I have to list them all out individually? What I have is this address=/blockedomain.com/127.0.0.1 And then subsequent…
regularjoe
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What Block Sizes and Stripe Sizes will cause performance issues using RAID5?

I'm trying to understand Block Size and Stripe Size. I realize this could apply to more configurations than just RAID5, but i am interested in RAID5 specifically, because I'd like to understand the relationship between Block Size and Stripe Size,…
meltdownmonk
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linux - centOS 6.2 block IP starts with

Is it possible to block an IP starting with? For example i want to block ALL IPs that starting with 188.67. Is there a command or a way for that? My problem: I have a game server, and A person keeps accessing into with with a proxy server, all of…
Ben Beri
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Postfix block senders outside from local domains

I would like to block every mail that is coming in from a domain that is running on my server. Example: I have domain1.com on my mail server and I'm getting a mail from outside with an email address of JohnDoe@domain1.com Then I know it's a Spam,…
Tibby
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Block IPs if they access a resource

I own a server that it's costantly being attacked by scripts (that try to access to phpMyAdmin's setup file's and stuff like this). I've heard that many people get this kinds of attacks, but I'm starting to worry since they are getting more common…
Victor Oliva
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