Hi, I'm running a webserver with Suse 10.2 configured with ispconfig. Also I'm using the ispconfig firewall, but can't configure that well for port 21. I do run proftpd but I run this on a different port, when I try to close port 21 in ispconfig it keeps open although proftpd is running on another port? The bastille-firewall.cfg shows under TCP_PUBLIC_SERVICES the non-default ftp port, other running services and ftp pasv mode ports. Port 21 isn't in there but I'm not able to get it closed, could anyone help me out? TCP_PUBLIC_SERVICES="4321 22 80 81 443 2000:2019" # MINIMAL/SAFEST UDP_PUBLIC_SERVICES="" # MINIMAL/SAFEST TCP_INTERNAL_SERVICES="" # MINIMAL/SAFEST UDP_INTERNAL_SERVICES=""
I tried two different port scanners running on a seperate PC (Laptop on UMTS connection). Other ports seem to respond to changes made in isp config firewall, only changes on port 21 doesn't seem to sort any effect. ProFTPD is running on different port, shutting down ProFTPD and closing the other ProFTPD port makes no difference. What else could keep this port to stay open?
Are you sure that there is no other firewall installed on your server? Please post the output of: iptables -L
As far as I know of none, I just followed the tutorial The Perfect Setup - OpenSuSE 10.2 (32-bit) and moved the ProFTPD port to a non-default port in its config file by changing these two lines in proftpd.conf Port 4321 PassivePorts 2000 2019 iptables -L output gives: -------------------------------------------------------- Chain INPUT (policy DROP) target prot opt source destination DROP tcp -- anywhere loopback/8 ACCEPT 0 -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT 0 -- anywhere anywhere DROP 0 -- BASE-ADDRESS.MCAST.NET/4 anywhere PUB_IN 0 -- anywhere anywhere PUB_IN 0 -- anywhere anywhere PUB_IN 0 -- anywhere anywhere PUB_IN 0 -- anywhere anywhere DROP 0 -- anywhere anywhere Chain FORWARD (policy DROP) target prot opt source destination ACCEPT 0 -- anywhere anywhere state RELATED,ESTABLISHED DROP 0 -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination PUB_OUT 0 -- anywhere anywhere PUB_OUT 0 -- anywhere anywhere PUB_OUT 0 -- anywhere anywhere PUB_OUT 0 -- anywhere anywhere Chain INT_IN (0 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere DROP 0 -- anywhere anywhere Chain INT_OUT (0 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere ACCEPT 0 -- anywhere anywhere Chain PAROLE (6 references) target prot opt source destination ACCEPT 0 -- anywhere anywhere Chain PUB_IN (4 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere icmp destination-unreachable ACCEPT icmp -- anywhere anywhere icmp echo-reply ACCEPT icmp -- anywhere anywhere icmp time-exceeded ACCEPT icmp -- anywhere anywhere icmp echo-request PAROLE tcp -- anywhere anywhere tcp dpt:ctsd PAROLE tcp -- anywhere anywhere tcp dpt:ssh PAROLE tcp -- anywhere anywhere tcp dpt:http PAROLE tcp -- anywhere anywhere tcp dpt:hosts2-ns PAROLE tcp -- anywhere anywhere tcp dpt:https PAROLE tcp -- anywhere anywhere tcp dpts:cslistener:2019 DROP icmp -- anywhere anywhere DROP 0 -- anywhere anywhere Chain PUB_OUT (4 references) target prot opt source destination ACCEPT 0 -- anywhere anywhere
yeah, I agree ;-) But when I do a portscan it says the port is open? When I try to connect to port 21 using FTP it says connected (but doesn't seem to be able to find a service behind the port). The non-default FTP port connects fine... When I move the ProFTPD service back to port 21 and try to connect using a dos shell it gives me: connected to <ip>. (but it doesn't login). Although if I connect to a different port it doens't give me the: connected to <ip> message but instead: ftp connect: unknown error number. What could cause this difference in behaviour?
finally I found out it doesn't have anything to do with my ispconfig configuration, but my speedstream seems to respond with a P21 open, even if nothing is connected to it
