Msrdp und Forwardings
Hi !
I am using a ipchains firewall. I have set up the firewall using rcf firewall (http://rcf.mvlan.net:8080/).
Now I have allowed access to the firewall on port 3389 which I am forwarding to an internal terminalserver.
The Port is open and is answering to telnet sessions on that port:
diva:/home/nengel# nmap -p 3389 xx.xx.xx.xx
Starting nmap V. 2.54BETA31 ( www.insecure.org/nmap/ )
Interesting ports on
Port State Service
3389/tcp open msrdp
Nmap run completed -- 1 IP address (1 host up) scanned in 7 seconds
diva:/home/nengel#
But from some hosts I am not able to connect to the terminal server. I get those errormessages in the logfile.
Mar 24 13:07:39 zola kernel: Packet log: unserved DENY eth1 PROTO=TCP 62.146.108.243:3389 ip.des.ts.servers:61560 L=40:20:0 S=0x00 I=45625:1362689365:1985810924 T=122 ...R..
Mar 24 13:07:39 zola kernel: Packet log: badflag DENY eth1 PROTO=TCP 62.146.108.243:3389 ip.des.ts.servers:61560 L=40:20:0 S=0x00 I=45625:1362689365:1985810924 T=122 .....R..
But most strange is:
The Machines from which I can partly access are in the same network with the same operating system and so on.
And are able to connect to other terminalservers as well.
Strange, isn´t it ?
__________________________________________________________
Nik Engel NETWAYS GmbH
Senior Systems Engineer Deutschherrnstr. 47a
Fon.0911/92885-13 D-90429 Nürnberg
Fax.0911/92885-33
nengel@netways.de www.netways.de
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