4
votes
1answer
253 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 ...
0
votes
1answer
120 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
2answers
411 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
3answers
177 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
54 views

Port periodically blocked

I'm wondering what are the possible ways to block some port while it is in use by some other process? Short story long: I've got an app(1) that communicates with another app(2) on one host/local ...
2
votes
3answers
408 views

Stop slowing down fast and verbose operations when using ssh over slow connections

I often copy many files between 2 servers connected via 1GBit ethernet while I am connected via VPN and SSH over DSL. The problem is, that the verbose output (1 line per copied file) which needs to be ...
2
votes
3answers
438 views

block websites in our network

We would like to block users from accessing sites like facebook and all from our network. All the connections are through our router(linux machine). What would be the best way to block the sites on ...
2
votes
3answers
9k views

Squid: how to block websites for a particular IP address?

How to block websites for particular IPs by squid? Please give solution with example or configuration file.
0
votes
1answer
755 views

Block based on keyword

Hai linux guys, I am using linux (RHEL5) Server. I want to block some sites for windows clients, How can i block unwanted sites based on keywords(keywords in text file) in RHEL 5 ? Are there any ...