OpenWRT Firmware for WRT54G3G- New Aug. 25th

n8evdo · Posted: Mon Apr 28, 2008 10:48 am Post subject:

Has anyone been able to fix the port forward (not working) issue?

rcoker6493 · EVDO Newbie Joined: 23 Feb 2008 Posts: 2

daverup · EVDO User Joined: 07 Dec 2007 Posts: 41

If you are using Alltel, it's probably not your router that is sluggish.
Alltel is deploying a caching proxy server that is slowing things down.

The commands for the NVRAM cleanup are run after using ssh to get to the router command line. Those commands are a few pages back in this thread I think.

jfarris · EVDO Junkie Joined: 10 May 2007 Posts: 182

Ranger or anyone that has programmed on this firmware:

You can choose what service you connect through, but is the file with the connection information based on what carrier you choose accessible? I have some connection strings in my 3g-generic.chat file that have helped with connectivity and performance, but I want to make sure that I'm not conflicting with any Alltel strings that may be pre-programmed.

Thanks in advance.

n8evdo · Posted: Fri May 16, 2008 7:57 am Post subject:

Can someone that has v82 of this firmware running let me know if the port forward option actually works?

Rangerw · Posted: Tue Jun 03, 2008 7:57 pm Post subject:

Working on the port forwarding and believe it's because
'iptables' only listens to WAN which is vlan1 and it ignores WWAN which is ppp0.

Experimenting with the init.d firewall script to see what I can screw up. But a ppp0 forward rule my help.

Been inactive since been on the KR1/USB 720 last month, but new month so moved back to the 54g3g/V740 and got to poking around in it again.
_________________
A simple man.

claudioc · EVDO Newbie Joined: 03 Jun 2008 Posts: 1

Hello. Great job with this, but is it possible for you to show a list of the diffs from the sources in the standard distribution so this can be replicated for other variants?

TIA,

Claudio

DBoone · EVDO Newbie Joined: 04 Jun 2008 Posts: 1

Rangerw · Posted: Thu Jun 05, 2008 11:08 pm Post subject:

Rangerw · Posted: Thu Jun 05, 2008 11:34 pm Post subject:

As DBoone directed, add the two lines to the S35firewall file using the File Editor. The file is located at: /etc/init.d/s35firewall Click the 'paper/pencil' icon on the right side to enter edit mode.

iptables -A FORWARD -i ppp0 -j forwarding_wan add to the
"### FORWARDING" area: when added should be similar to this:

### FORWARDING
### (connections routed through the router)

# base case
iptables -P FORWARD DROP
iptables -A FORWARD -m state --state INVALID -j DROP
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT

#
# insert accept rule or to jump to new accept-check table here
#
iptables -A FORWARD -j forwarding_rule
iptables -A FORWARD -i $WAN -j forwarding_wan
iptables -A FORWARD -i ppp0 -j forwarding_wan

------

iptables -t nat -A PREROUTING -i ppp0 -j prerouting_wan add to the ### MASQ area, example below:

### MASQ
iptables -t nat -A PREROUTING -m state --state NEW -j NEW
iptables -t nat -A PREROUTING -j prerouting_rule
iptables -t nat -A PREROUTING -i $WAN -j prerouting_wan
iptables -t nat -A PREROUTING -i ppp0 -j prerouting_wan

iptables -t nat -A POSTROUTING -j postrouting_rule
iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE

Then click Save Changes and then Apply changes and reboot the router.

I prefer to modify /etc/config/firewall with my forwarding rules, example of Remote Desktop forwarding:

forward:dport=3389:192.168.1.121:3389

(192.168.1.121 is my target PC IP)

Make sure the PC your forwarding to is listed in the Hosts area and getting a static IP via MAC address (also in host Area):

Static IP addresses (for DHCP)
00:00:00:00 --> IP address you want assigned to the target PC

(00:00:00:00 = Please use the actual MAC address of the target computers NIC/Wireless card.)

Host NamesIP
IP address you assigned to the target PC ---> Name of the Target PC

In DNSMASQ make sure 'Read Ethers' is checked.
_________________
A simple man.

Rangerw · Posted: Sat Jun 14, 2008 9:12 pm Post subject:

I posty this through my WRT54G3G-ST with X-OpenWrt Kamikaze 7.09 with Linux 2.4.34 #5 Kernal withn a VZW V740 Express card.

It's not pretty yet since I had to us the config files since the Network setup page (webif user inface) is not useable for US EVDO (3G) Cards, at least what I could gather.

There is no Mobile Network status page and using the PPPoE staus page to connect and Disconnect. I also have murdered ifup scripts and chatscripts to get a connection but it seems to work fine.

But good news is that port forwarding works, there is a working Firewall log and a Bandwidth monitor interface to moniter useage. It seems to also be better with system resources cpu and file system usuage.

I'll see what I can do to have a usuable Network setup page and Mobile Satus page and compile a workable image, but gonna take awhile since I'm learning as I go.
_________________
A simple man.

dojesus · EVDO Fledgling Joined: 31 Oct 2007 Posts: 13

Sweet! Looking forward to giving it a whirl.
Give us a heads up when it's ready.