similar to: IPFW: combining "divert natd" with "keep-state"

[ -netters, please Cc me or security@ with replies. ] I'm running into trouble integrating dynamic racoon-based IPSec into a network with ipfw and natd. I need to be able to allow VPN access from any address from authenticated clients. I've got the dynamic VPN working, with racoon negotiating SAs and installing SPs, but the problem is that I can't tell whether an incoming packet on

hi i have a problem with my icmp, i have a router that performs nat. i cannot ping to internet hosts from more than one stations situated behind NAT at once. if i want to ping from another station i have to stop the ping that was initiated from the first host, and after a few seconds i can ping from another station.i've checked firewll and i have no ipfw rules that could stop icmp traffic.

I have a FreeBSD box acting as a firewall and NAT gateway I would like to set it up to transparently pass IPSec packets -- I have an IPSec VPN client running on another machine, connecting to a remote network. Is there a way to do this? I can't find any hints in the man pages.

Hi. We just opened a gaming center and have chosen to run a FreeBsd box for our firewall. IPFW is configured at it's very basic running natd through rl0 and allowing any to any connections from the lan to the outer world. Natd controls access to the lan. We have a 6.0 mb/s ADSL net connection for all the gaming clients to use, however if a gamer starts downloading a file, that file

I will shortly be replacing a couple of proprietary VPN boxes with a FreeBSD solution. Section 10.10 of the Handbook has a detailed description of how to do this. However I remember a lot of discussion about a year ago about whether the gif interface was necessary to set up VPNs like this or whether it was just a convenience, for "getting the routing right". A number of people said

Hello, I have configured jail for users with sshd ftpd and auth. I started this jail on IP 127.0.0.10(there is an alias on lo0 interface), there was not any bigger problem to start it. But i have a problem with internet in this jail. I can log in to this jail through ssh or ftpd but i can't connect to the internet. I try to set up some kind of nat but it doesn't work. Can anybody help me

Hi, in the kernel I have these lines: [...] device miibus # MII bus support device rl device ed options IPFIREWALL #firewall options IPFIREWALL_VERBOSE #enable logging to syslogd(8) options IPFIREWALL_VERBOSE_LIMIT=0 #limit verbosity options IPDIVERT #divert sockets options DUMMYNET

Hi there, Is there some way to configure ipfw to do traffic normalizing ("scrubbing", as in ipf for OpenBSD)? Is there any tool to do it for FreeBSD firewalling? I've heard that ipf was ported on current, anything else? TIA, /Dorin. __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools

does anyone what is the ipfw equivalent line for this one? rdr fxp0 external_ip_addres/32 port 69 -> 192.168.66.3 port 69 udp i use a tftpd server behind a nat and i want to redirect all trafic coming from internet on port 69 to the tftpd server 10x for help __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around

Hi. On my FreeBSD 4.8 configured IPFW2+IPF+IPNAT and I use them all: - IPFW - traffic accounting, shaping, balancing and filtering; - IPFilter - policy routing; - IPNAT - masquerading. I want to know, how IP-packets flow through all of this components? What's the path? incoming: IPFW Layer2 -> IPFW&Dummynet -> IPNAT -> IPFilter ? outgoing: IPFW Layer2 ->

heya i've been using freebsd's ipfw for quite a while and recently on a new server i've got this issue with ipfw that i can't understand ... something is wrong ... 01000 8042 1947866 allow ip from any to any via fxp0 01010 0 0 allow ip from any to any via lo0 01014 9886 4170269 divert 8668 ip from any to any in via vr0 01015 0 0 check-state 01130 14679 5695969 skipto 1800 ip from

Made a typo in the cc: line. Coffee time, I guess. -------- Original Message -------- Date: Mon, 12 May 2003 19:52:17 -0400 From: Bob K <melange@yip.org> To: Michael Collette <metrol@metrol.net> CC: freebsd.-security@freebsd.org Subject: Re: Down the MPD road > I did this, and it does correct the immediate problem. Of course, it > also > creates a new glitchy. >

Hello I am trying to redirect all http traffic of unauthorized wifi users on a wireless hotspot to a login page. The problem I have is that I can not disable the regular address translation (I want the source address to stay the same). 10.0.0.7 is the wifi client 195.250.155.29 is the web wifi user tries to access from his browser 195.113.17.94 is my login page 10.0.0.1 is the wifi

Hi all, Is it mandatory to add device mem to jails to enable network via the gateway? Left ezjail with FreeBSD-6.3 (and a hardware replacement of my server) and am now starting again with FreeBSD-7.1. Early this week, I upgraded from 7.0 to 7.1 (not having 'used' jails on 7.0). After creating the jail with `ezjail-admin update -i` I created a 'ports build' jail `ezjail-admin

Hello, I noticed that after enabling firewall in my kernel (5.3-release), my dmesg now gives me this: ipfw2 initialized, divert disabled, rule-based forwarding disabled, default to accept, logging limited to 5 packets/entry by default On 5.2.1, I used to get this: ipfw2 initialized, divert disabled, rule-based forwarding enabled, default to accept, logging disabled If both cases, I am

I have just checked the Openbsd box on the if interface. fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 address: 00:02:55:30:54:28 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255 inet6 fe80::202:55ff:fe30:5428%fxp0 prefixlen 64 scopeid 0x1 xl0:

Dear list, A few days ago one of my machines were attacked by a DDoS-attack using UDP on random ports.. When I later on analyzed the logs, I found this in my dmesg: xl0: initialization of the rx ring failed (55) xl0: initialization of the rx ring failed (55) xl0: initialization of the rx ring failed (55) I tried to find out on google what it ment, but without any luck. What does that mean and

>> 3. I'm intrested in blocking kazaa/P2P trafic with IPFW any help in this issue you could possibly block connections at known p2p ports. deny tcp from any to any 6699 step but most of the newer protocols use dynamic ports and in turn, are configurable. so ipfw isn't exactly ideal on it's own for this. -r. -----Original Message----- From: Pons [mailto:pons@gmx.li] Sent:

Hi ! First of all, I am sorry if this is not the list for that, but I've been learning (a little bit...) a way to implement a freeBSD firewall. So far I came up with a set of rules I would like to show you for commenting. I am sure there're a lot of errors and/or stupid rules (I am not sure the rules order is good for what I need) and I would be really pleased if one could have a look

Hi, i've set the outside ip for the jail..It works.. When i try to ssh to jail'ed system from the main system (in which is created jail) the connection is successful, but when i try to connect to jailed system from anywhere else i get this message: ssh: connect to host IP_NUMBER port 22: Operation timed out What can be wrong here? How to solve this problem?