As stated in the examples section on the ebtables hp, I started with this: ***** Bridge table: broute Bridge chain: BROUTE Policy: ACCEPT nr. of entries: 4 1. Iptables NAT (snat y dnat) dport y balanceo. 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 Third try: use brouting + MAC snat + MAC dnat. Nicht die vom Default Gateway wo dein Gateway weiterleiten soll. Denk dran, du willst ja die Quelladresse ändern, nicht die Zieladresse (die … 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 Die iptables Regel für das SNAT ist falsch, hinter --to-source muss die 10.0.0.3, also die Adresse von deinem Gateway stehen. Continuamos con nuestra pequeña revisión de las capacidades de iptables en cuanto a la gestión de paquetes tcp/udp.

iptables -t nat -A PREROUTING -s 192.168.1.2 -i eth0 -j MASQUERADE. 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. 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. Is it possible to port forward to LAN rather than a specific destination IP, i.e. 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. -p IPV4 -i eth1 -j DROP , count = 47 3. 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. 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. 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. Match rule specifying a source port. Publicado el septiembre 18, 2013 por freelifeblog. -p ARP -i eth0 -j DROP , count = 371 4. You do not need the INPUT chain rule. 11.3. masquarade all outgoing packets to be WLAN0 IP. ... Third try: use brouting + MAC snat + MAC dnat. DNAT target. Some examples of SNAT, DNAT with iptables with comments. Two 802.1Q VLANs, a HP 4000 M switch and a Linux bridge with iptables and ebtables. This is accomplished just by making the router use the SNAT target from iptables. So in this question, no matter what the final destination, the packets should first … 0. ... Second try: use ebtables MAC snat to give the two bridge IP addresses different MAC source addresses. Step-By-Step Configuration of NAT with iptables. Usually the main criterion for SNAT is "traffic that's going out a given interface" (i.e. 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. mainly used in start-up script. port forward -> 192.168.0.0/24 instead of port fwd -> 192.168.0 iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 192.168.1.1 . 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). -p IPV4 -i eth0 -j DROP , count = 47959 2. All packets leaving eth0 will have src eth0 ip address.

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 … This tutorial shows how to set up network-address-translation (NAT) on a Linux system with iptables rules so that the system can act as a gateway and provide internet access to multiple hosts on a local network using a single public IP address.