Fire walls between servers..
Hi All,
1. Is there any way to find firewalls (i.e. number of firewalls and their name or any other identification) between two servers.
2. How to find ports whether the are opened in the fire wall. Telnet is disabled for our servers. Is there any way to find this.
Thanks in advance,
DJ.
telnet: connect to address 10.4.149.241: Connection refused
Can I conclude the port is not opened from the above result ?Possible conclusions:
1. There is no service running on pser2j.bts.org at 55000 port number
2. FW1 returns connection refused (blocking connection)
2. FW2 returns connection refused (blocking connection)
Is there any way to find which firewall is creating the problem?Of course there is.
1. Clean, quick and best: ask the FW administrator whether connection is allowed (also FW administrator could check FW logs for all information about connection)
2. Only for users with good understanding of TCP/IP: you could compare TTL of SYN packet with TTL of RST packet (firewall decrements TTL)
Note this method is not alwas usefull and in such case you need use other methods.
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John Potts wrote:
Is the router's hardware firewall equally effective if one is connected wirelessly (as opposed to via an Ethernet cable)?
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http://blogs.technet.com/b/askds/archive/2010/03/31/tuning-replication-performance-in-dfsr-especially-on-win2008-r2.aspx
Best Regards,
Mandy
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Try:
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hi there,
i have a running application using RMI but the problem is..
It only run when the server and the client are in the same LAN,But
when installing the server side on a machine behind a fire wall it gives me this exception
Connection refused: connect.
So is there a special technique when dealing with server behind firewalls?
if exis what should i use????
Thanks for your time
Regards
Sohayes and some of the techniques are
HTTP tunnelling
Direct forwarding over http
Indirect forwarding over http
rmi-cgi scripts etc -
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Install all System, Applications and Security updates released by Apple.
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Say thanks by clicking the Kudos Thumbs Up to the right in the post.
If my post resolved your problem, please mark it as an Accepted Solution ...
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