Date: Sun, 25 Nov 2007 07:04:49 +1100 From: Jerahmy Pocott <quakenet1@optusnet.com.au> To: Roger Olofsson <raggen@passagen.se> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Difficulties establishing VPN tunnel with IPNAT Message-ID: <894E3C92-2C45-4FC2-8C56-D4B303F0349F@optusnet.com.au> In-Reply-To: <47482C2C.6010700@passagen.se> References: <7BB1A732-4F07-499E-A183-22776FEEEE90@optusnet.com.au> <47482C2C.6010700@passagen.se>
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Sorry let me clarify.. There are two issues, one is connecting to any external VPN, with no filter I can establish a connection to PPTP VPN, but the 'Sonic Wall Global VPN Client' still fails to connect even with no filter rules. The redirect for the CVS server has an ipf rule to allow traffic on that port, but users are getting connection refused messages. I will include my ipf rules, I clearly need some sort of rule to allow inbound for the VPN to work, though I think the ipnat is breaking the Sonic Wall client. Which is strange because everything worked fine with ipfw/natd. Here are my ipf rules: # Allow all in/out on internel interface pass in quick on fxp0 all pass out quick on fxp0 all # Allow all in/out on loopback interface pass in quick on lo0 all pass out quick on lo0 all # Allow all out-going on public interface and keep state pass out quick on fxp1 proto tcp from any to any flags S keep state pass out quick on fxp1 proto udp from any to any keep state pass out quick on fxp1 proto icmp from any to any keep state # Block all inbound traffic from non-routable or reserved address spaces block in quick on fxp1 from 192.168.0.0/16 to any #RFC 1918 private IP block in quick on fxp1 from 172.16.0.0/12 to any #RFC 1918 private IP block in quick on fxp1 from 10.0.0.0/8 to any #RFC 1918 private IP block in quick on fxp1 from 127.0.0.0/8 to any #loopback block in quick on fxp1 from 0.0.0.0/8 to any #loopback block in quick on fxp1 from 169.254.0.0/16 to any #DHCP auto-config block in quick on fxp1 from 192.0.2.0/24 to any #reserved for docs block in quick on fxp1 from 204.152.64.0/23 to any #Sun cluster interconnect block in quick on fxp1 from 224.0.0.0/3 to any #Class D & E multicast # Block frags block in quick on fxp1 all with frags # Block short tcp packets block in quick on fxp1 proto tcp all with short # block source routed packets block in quick on fxp1 all with opt lsrr block in quick on fxp1 all with opt ssrr # Block anything with special options block in quick on fxp1 all with ipopts # Block public pings block in quick on fxp1 proto icmp all icmp-type 8 # Block ident block in quick on fxp1 proto tcp from any to any port = 113 # Block all Netbios service. 137=name, 138=datagram, 139=session # Block MS/Windows hosts2 name server requests 81 block in quick on fxp1 proto tcp/udp from any to any port = 137 block in quick on fxp1 proto tcp/udp from any to any port = 138 block in quick on fxp1 proto tcp/udp from any to any port = 139 block in quick on fxp1 proto tcp/udp from any to any port = 81 # Allow CVS access pass in quick on fxp1 proto tcp/udp from any to any port = 2401 # Logged Blocking Rules # # Block nmap OS fingerprint attempts block in log first quick on fxp1 proto tcp from any to any flags FUP # Block all other in coming traffic block in log first quick on fxp1 all Thanks for the help! J. On 25/11/2007, at 12:50 AM, Roger Olofsson wrote: > Hello Jerahmy, > > Assuming you want to connect from the outside to your VPN. > > Have you made sure that port 2401 is open for inbound traffic in > your ipf.rules? > > You might also want to do 'ipnat -C -f <path to ipnat.rules>'. Man > ipnat ;^) > > Greeting from Sweden > /Roger > > > > Jerahmy Pocott skrev: >> Hello, >> I recently decided to give ipf and ipnat a try, previously I had >> always been using >> ipfw and natd. Since switching over I can no longer establish a >> VPN tunnel from >> any system behind the gateway. >> I did 'ipf -F a' to flush all rules but I was still unable to >> connect so I think it's a problem >> with ipnat? Also my redirect from ipnat doesn't seem to work either. >> These are the only ipnat rules I have: >> (fxp1 is the external interface) >> # ipnat built in ftp proxy rules >> map fxp1 10.0.0.0/24 -> 0/32 proxy port 21 ftp/tcp >> map fxp1 0.0.0.0/0 -> 0/32 proxy port 21 ftp/tcp >> # CVS Server on Fileserv >> rdr fxp1 0/32 port 2401 -> 10.0.0.2 port 2401 tcp/udp >> # nat all out going traffic on fxp1 from internal lan >> map fxp1 10.0.0.0/24 -> 0/32 >> I can post my firewall rules too if that would help, however with >> NO rules set it >> still didn't work so I don't think that would help.. (I'm using >> the klm which is default >> to accept?) >> Thanks! >> J. >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "freebsd-questions- >> unsubscribe@freebsd.org" > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions- > unsubscribe@freebsd.org"
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