I have two nic (eth0=internet,br0=intranet) I can access windows box(192.168.1.2) from within intranet but can't connect via eth0 interface 0. sudo iptables -t nat -A PREROUTING -i eth0 -j DNAT --to 10.0.1.4 sudo iptables -t nat -A POSTROUTING -o eth1 -j SNAT --to 10.0.1.5 Das Ganze funktioniert von außen auch genauso wie ich es geplant habe. Denk dran, du willst ja die Quelladresse ändern, nicht die Zieladresse (die … Two 802.1Q VLANs, a HP 4000 M switch and a Linux bridge with iptables and ebtables. Publicado el septiembre 18, 2013 por freelifeblog. This is accomplished just by making the router use the SNAT target from iptables. Step-By-Step Configuration of NAT with iptables. The DNAT target is used to do Destination Network Address Translation, which means that it is used to rewrite the Destination IP address of a packet. port forward -> 192.168.0.0/24 instead of port fwd -> 192.168.0 of entries: 4 1. Some examples of SNAT, DNAT with iptables with comments. As stated in the examples section on the ebtables hp, I started with this: ***** Bridge table: broute Bridge chain: BROUTE Policy: ACCEPT nr. Third try: use brouting + MAC snat + MAC dnat. mainly used in start-up script. Re: iptables dnat / snat Beitrag von gms » 09.12.2009 18:51:12 linux-tux hat geschrieben: Habe da auch schon mit Wireshark gesnifft u herausbekommen das … ... Third try: use brouting + MAC snat + MAC dnat. -p IPV4 -i eth0 -j DROP , count = 47959 2. There are three ways to do it: Source Network Address Translation (SNAT) 1 , Destination Network Address Translation (DNAT) 2 and virtual servers (VS – also called a Virtual IP or VIP). I'm trying to setup iptables to route rdp. iptables -t nat -A POSTROUTING -o ens33 -j SNAT --to 192.168.1.5 I assume it is just a typo in your PREROUTING line, but regardless I would do it this way anyhow: iptables -t nat -A PREROUTING -p tcp -i ens33 --dport 80 -j DNAT --to-destination 192.168.2.2:80 If your default policy for the FORWARD chain is ACCEPT, then you do not need those rules. iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 192.168.1.1 . SNATs and DNATs In the section on RFC 1918 IP addresses, I mentioned that the problem is crossing the boundary between public (non-RFC 1918) IP addresses and private (RFC 1918) IP addresses.
So for example, say the VPN server and other undistinguished clients are on the 10.0.77.0/24 network, the VPN creates a tun0 interface covering 192.168.252.0/24, and the private subnet is 192.168.33.0/24. All packets leaving eth0 will have src eth0 ip address. Nicht die vom Default Gateway wo dein Gateway weiterleiten soll. 11.3. examples of SNAT, DNAT with iptables for Advantech, Conel routers, with comments (probably will work on other routers where iptables can be manipulated, care needs to be taken on applying these commands after reboot) - snat_dnat_advantech.md Match rule specifying a source port. Die iptables Regel für das SNAT ist falsch, hinter --to-source muss die 10.0.0.3, also die Adresse von deinem Gateway stehen. masquarade all outgoing packets to be WLAN0 IP. Usually the main criterion for SNAT is "traffic that's going out a given interface" (i.e. iptables -t nat -A PREROUTING -s 192.168.1.2 -i eth0 -j MASQUERADE. It is really DNAT in which the destination IP address to use is implicit, 127.0.0.1 if it is a local packet or the machine interface's IP address otherwise, 192.168.5.1 in the case of the OP. DNAT target. So in this question, no matter what the final destination, the packets should first … -p IPV4 -i eth1 -j DROP , count = 47 3. ... Second try: use ebtables MAC snat to give the two bridge IP addresses different MAC source addresses. If a packet is matched, and this is the target of the rule, the packet, and all subsequent packets in the same stream will be translated, and then routed on to the correct device, host or network. Is it possible to port forward to LAN rather than a specific destination IP, i.e.
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