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Hello There,
I have installed Proxy server behind gateway/firewall, Proxy server is able to ing websites/ips. But proxy clients are not able to ping any website behind the proxy server, How do I unable pining Internet websites...
Currently all PC are able to access Internet thru Linux SQUID Proxy, but can not received external emails because the POP and SMTP is blocked, how to allow users to use POP and SMTP address with their Email client software?
You will need to have a router to forward the packets out onto the web and receive the responses. If you only have a single public IP address which is currently being used by your proxy thenn you'll need to make your proxy into the IP Masquerading/NAT'ing router. Have a look at http://www.tldp.org/HOWTO/IP-Masquer...WTO/index.html you'll probably want to combine this with some restrictions on out going connections too, if only to stop people from bypassing the proxy and going directly to the website. http://www.tldp.org/HOWTO/Firewall-HOWTO.html might be useful for this, have a general read of http://www.tldp.org
I have One GATEWAY Server (RHL7.3) with 1 Globle IP (eth0-61.1.65.xx) and 1 Local IP (eth1-192.168.0.1), eth1 is connected to my PROXY server (RHL7.3) (eth0-192.168.0.2) and eth0 of PROXY server (192.168.1.1) is serving the Internet for client PCs(more than 100PCs) from various networks (192.168.0-20.x).
The client PCs want to access their emails from Email Client Software (Outlook express etc) for this they should get access of pop.isp.net/smtp.isp.net. I assume if the client PCs able to ping IPs of those pop/smtp they will get access to it.
GATEWAY server has firewall rules to deny access from Internet. my PROXY server is able to ping all websites/ips of internet.
Above information is to brief the configuration of Installation, Please guide me.
waiting for reply.
Thanks!
Neeraj Malve
Last edited by neerajmalve; 04-25-2003 at 11:59 PM.
Hello there,
What kind of IP masq. I will need to do? from which IP 2 which IP?
Using Fetchmail is also a good idea, currently i am serving email with that only... but the problem is I have to write plain text password in .fetchmailrc and user can not change their password without informing me the new password? is there any way to update the password of email account in fetchmail configuration? or using a encrypted pass in fetchmail?
It looks to me like your gateway must already be peforming IP Masq as otherwise your proxy server wouldn't be able to ping any IPs. It looks to be like your have internet <-> gateway <-> proxy <-> LANs. If this is the case then you either need to make your proxy server the default gateway for the LAN (remember not to forward port 80 requests!), or your need to move reconfigure your network so you have a direct route to the gateway from all your PCs.
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