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31
votes
16answers
31k views

Why Block Port 22 Outbound?

I'm a programmer, and I have worked for a few clients whose networks block outgoing connections on port 22. Considering that programmers often need to use port 22 for ssh, this seems like a ...
2
votes
1answer
9k views

How can a block IP addresses using Windows Server 2008 firewall?

I have started to get various login attempts from different IP addresses. How can I block these IP addresses in the Windows Server 2008 Firewall?
-3
votes
1answer
92 views

iptables rules for blocking specific packets [closed]

Im using the following iptables rule: iptables -A INPUT -p tcp -m tcp --tcp-flags PSH,ACK PSH,ACK -m length --length 52 -m state --state ESTABLISHED -j DROP It does it's job for blocking the ...
1
vote
1answer
2k 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. ...
12
votes
10answers
5k views

Block Facebook for selected users

We have a few users here who are using Facebook during working hours and their productivity is through the floor, as a temporary measure I have remotely edited their hosts files to point facebook.com ...
3
votes
2answers
2k views

Are there internet users connecting with HTTP/1.0?

Are there internet users connecting with HTTP/1.0? Such as over a proxy. Because I'm going to block HTTP/1.0 since most of the bots are using HTTP/1.0.
3
votes
6answers
2k views

How can I block access to my website from certain countries using the LAMP stack?

I have a website that I do not want to be viewed by entire countries. The website is running on a LAMP server. How can I achieve this?
2
votes
2answers
5k 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 ...