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Dear community,
I am new to this branch (Linux I mean) and as a new
user it was my turn to install a new server.
I installed RedHat 8 on a system with 2 LAN
cards.
The server works as a mailserver, apache, proxy and
firewall.
The first 3 problems are solved. It work really
fine.
The last daemon is the problem.
IPTABLES is installed but it is only with the
default settings and with some settings made by the ISP.
The problem is that my bosses ask me to do some
access list to restrict the access to some users on internet.
I "composed" some rules in squid.conf and
everything works just fine until "a smart guy" discovered that if he
doesn't
put the mark on "use proxy server" he have internet
access.
In this case, I'm not verry sure, but I guess it is
an iptables problem. I read something about this topic, but I
didn't
find anything related to this specific
problem.
Here are my data:
eth0: 193.2xx.xxx.xxx
eth1: 192.168.1.254
I want to restrict all users EXCEPT this
3 addresses: 192.168.1.100, 192.168.1.200, 192.168.1.21
How can I do that?
All that I found in all documentation that I read
it was related to restricting all addresses.
Please, consider that I am a beginer and be a
little more detailed on your help.
Do you have another ideea about solving this
problem?
Thank you for your help!
Rares
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