similar to: [Bug 554] New: Packet illegaly bypassing SNAT

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=554 ------- Additional Comments From kaber@trash.net 2007-03-15 02:53 MET ------- Most likely these packets are considered invalid by connection tracking and therefore not handled by NAT. Try this: iptables -t mangle -A POSTROUTING -m state --state INVALID -j DROP -- Configure bugmail:

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=554 ------- Additional Comments From fhagur@gmail.com 2007-04-17 05:04 MET ------- I have been wondering about this bug and had similar problems myself here in my Debian system, linux-kernel 2.6.18 iptables 1.3.6. I too saw that some packets became transmitted illegally through the ppp0 interface, when they just shoudn't. What I

Hi folks... I'm configuring Firewall in the server running Conectiva Linux 6.0 (Brazil) and I already configured to accept connections in the ports: netbios-ns 137/tcp # NETBIOS Name Service netbios-ns 137/udp netbios-dgm 138/tcp # NETBIOS Datagram Service netbios-dgm 138/udp netbios-ssn 139/tcp

Hi all, I want to divide the incoming traffic between what should go to the firewall and what should be forwarded to the local network behind it. I started with the IMQ example config, but added an extra htb class right below "10:1" to get the two sfq''s to borrow each other''s bandwidth. However, I can''t figure out how to set the two marks. According to this

I'm new to all of this, never played a windows game on mac before, but I thought I might get some help here. Sorry if I'm posting in the wrong thread or anything like this. I copied fallout new vegas from a friend who I'm pretty sure downloaded it illegaly. Don't know if this is relevant, just want to be sure. First of all it won't start - I have the same problem as the

https://bugzilla.netfilter.org/show_bug.cgi?id=876 Summary: bizarre handling of "related" connection packets (wrong OUTPUT interface assigned) Product: netfilter/iptables Version: unspecified Platform: x86_64 OS/Version: Fedora Status: NEW Severity: normal Priority: P5

Hi Folks, Just wondering if anyone can give me some pointers, I'm configuring Asterisk to talk to FWD's new IAX service. The asterisk server is behind an iptables NAT Firewall, with port 5036 forwarded: $IPTABLES -t nat -A PREROUTING -p udp -d $EXTERNAL_IP --dport 5036 -j DNAT --to-destination 172.16.20.200:5036 I can make outgoing calls just fine, but when I receive an inbound call

I tried netperf / netserver with Dom0 / DomU, but I could''nt get a correct NW traffic with xentop. Is there anybody could help me? At Host1''s Dom0, run netperf -H VMIP At Host2''s DomU (with VMIP named TTVM), run netserver At Host1, run xentop this way ->"xentop -n -b -d 1" At Host2, run xentop this way->"xentop -n -b -d 1" In Host2''s

Hello, I am using the following iptables POSTROUTING rule to NAT some RFC 1918 addresses: iptables -t nat -A POSTROUTING -s 192.168.19.23 ! 192.168.0.0/255.255.0.0 -p tcp --dport 80 -j SNAT --to-source 10.32.4.2 (I am using SNAT instead of MASQUERADE for performance reasons). I have several addresses on the 192.168.0.0/16 subnet that I am SNAT''ing similarly. Problem is, ''tc

Hi, I want to be able to specify actions for different classes of traffic in any of these four ways, and I''d like to use only HTB if possible: 1. No guranteed rate, No ceil 2. Guaranteed rate, No ceil 3. No guranteed rate, Ceil specified 4. Guaranteed rate, Ceil specified For types 2, 3 and 4 there can be several classes of each, with different rates and ceilings. 4 is ofcourse easy.

Hi I am experiencing a problem of bypassing firewalls. I know that "ssh -R" can forward ports from remote server to local ports. But it requires an account of the remote server, which seems to be a security hole. I am looking for other programs which can do so, any suggestions? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello everybody. I would like to enable QoS on the internal firewall NIC (eth2) to prevent bandwidth saturation from ftp downloads (for example). This is my firewall schema. ___ private network (100bit/s FD) / / /\ | / //\\ |/ || |eth2 \\ |

Is it possible to setup a route that will place the packet ''on the wire'' even if the destination is a local IP? I have been through the iproute2 docs and nothing jumps out at me. I am working on a project measuring network latency/jitter/etc and am currently using a GRE tunnel as the test path for measuring the first leg. The router at the other end of the tunnel faithfully

Hi list, Not sure if this is helpful for anyone but I am working on a Facebook project where I need bypass the new CSRF protection (built into Rails 2.0) under certain conditions. However, since my project works outside of Facebook I don?t want to disable the CSRF protection from requests made outside of Facebook. Here is a small extension i wrote for the ForgeryProtection module.

I have two iptable rules for userspace modification : iptable -t mangle -A PREROUTING -p udp --dport 9090 -j NFQUEUE iptable -t mangle -A OUTPUT -p udp --sport 9090 -j NFQUEUE I have the following network setup: client ---------------->Linux Box or router--------------------->server. What i'm trying to achieve is modifying all packets which comes from client to 9090 port of the

Hello everyone, I noticed recently that when I had /etc/nologin in place on my server I couldn't log in when I authenticated via passwords, but when I used RSA authentication I was able to log in no problem. I looked through the source, and I think I might see where the problem is. I have a Linux system, so sshd was compiled with PAM support. Using normal authentication, the pam_nologin

Hello, http://www.voip-info.org/wiki/view/Asterisk+Letting+SIP+clients+connect+directly The link above indicates that it is possible to setup RTP streams to directly flow between endpoints and completely bypass Asterisk. I would like to know if this configuration would work when, a) both endpoints are behind NAT, and/or b) both endpoints don't support same codecs with media flowing

I'm currently trying to reboot a CentOS 7.5 workstation (to complete an upgrade to 7.6), but it is 'stuck' while shutting down with 'A stop job is running for ...' - the counter initially gave a limit of '1min 30s' - but each time it reaches that limit, it just adds on ~90 seconds to the limit ... Currently the limit is '25min 33s' I'm in no hurry to

James Pearson wrote: > > I'm currently trying to reboot a CentOS 7.5 workstation (to complete an > upgrade to 7.6), but it is 'stuck' while shutting down with 'A stop job > is running for ...' - the counter initially gave a limit of '1min 30s' - > but each time it reaches that limit, it just adds on ~90 seconds to the > limit ... > > Currently

On Wed, May 22, 2019 at 7:44 AM mark <m.roth at 5-cent.us> wrote: > > The joys of systemd.... I'm not sure it's right to blame systemd. Systemd asked nicely for the service to shutdown. The service didn't, probably because the update change something and pulled the rug out from beneath it. Systemd then waited a bit to make sure the service wasn't just being slow, and