OpenWrt Forum Archive

Topic: TTL help please.

The content of this topic has been archived on 30 Mar 2018. There are no obvious gaps in this topic, but there may still be some posts missing at the end.

Post #1
baubau
3 Oct 2007, 09:19

How can i change the ttl to the outgoing packages, and to the incoming packages ?

Post #2
sioux
4 Oct 2007, 12:22

ipkg install iptables-mod-ipopt kmod-ipt-ipopt
be sure ipt_TTL is loaded on startup

add this two lines to /etc/firewall.user
### mangle
## ttl
iptables -t mangle -A PREROUTING -j TTL --ttl-inc 1
iptables -t mangle -A POSTROUTING -j TTL --ttl-inc 1

Post #3
gogu_beb
15 Feb 2010, 12:12

Hi everyone

sioux wrote:

ipkg install iptables-mod-ipopt kmod-ipt-ipopt
be sure ipt_TTL is loaded on startup

I have an wrt160nl and i use this firmware: http://downloads.openwrt.org/snapshots/ … uashfs.bin
I installed iptables-mod-ipopt kmod-ipt-ipopt but there is no ipt_TTL

I used lsmod:

Module                  Size  Used by    Not tainted
nf_nat_tftp              432  0
nf_conntrack_tftp       2400  1 nf_nat_tftp
nf_nat_irc               816  0
nf_conntrack_irc        2512  1 nf_nat_irc
nf_nat_ftp              1328  0
nf_conntrack_ftp        4704  1 nf_nat_ftp
xt_HL                   1280  0
xt_hl                    896  0
xt_MARK                  496  0
ipt_ECN                 1312  0
xt_CLASSIFY              496  0
xt_time                 1552  0
xt_tcpmss                992  0
xt_statistic             816  0
xt_mark                  512  0
xt_length                672  0
ipt_ecn                  976  0
xt_DSCP                 1392  0
xt_dscp                 1008  0
ipt_MASQUERADE           992  2
iptable_nat             2256  1
nf_nat                 10160  5 nf_nat_tftp,nf_nat_irc,nf_nat_ftp,ipt_MASQUERADE          ,iptable_nat
xt_NOTRACK               544  0
iptable_raw              656  1
xt_state                 768  3
nf_conntrack_ipv4       7408  6 iptable_nat,nf_nat
nf_defrag_ipv4           624  1 nf_conntrack_ipv4
nf_conntrack           37424 12 nf_nat_tftp,nf_conntrack_tftp,nf_nat_irc,nf_conn          track_irc,nf_nat_ftp,nf_conntrack_ftp,ipt_MASQUERADE,iptable_nat,nf_nat,xt_NOTRA          CK,xt_state,nf_conntrack_ipv4
ehci_hcd               31120  0
ipt_REJECT              1680  2
xt_TCPMSS               1856  2
ipt_LOG                 4176  0
xt_multiport            1792  0
xt_mac                   576  0
xt_limit                1008  1
iptable_mangle           992  0
iptable_filter           768  1
ip_tables               8480  4 iptable_nat,iptable_raw,iptable_mangle,iptable_f          ilter
xt_tcpudp               1760 13
x_tables                9296 25 xt_HL,xt_hl,xt_MARK,ipt_ECN,xt_CLASSIFY,xt_time,          xt_tcpmss,xt_statistic,xt_mark,xt_length,ipt_ecn,xt_DSCP,xt_dscp,ipt_MASQUERADE,          iptable_nat,xt_NOTRACK,xt_state,ipt_REJECT,xt_TCPMSS,ipt_LOG,xt_multiport,xt_mac          ,xt_limit,ip_tables,xt_tcpudp
ppp_async               6400  0
ath9k                  63264  0
ath9k_common            1840  1 ath9k
ath9k_hw              201024  2 ath9k,ath9k_common
ath                     6944  2 ath9k,ath9k_hw
usbcore                97424  2 ehci_hcd
nls_base                4800  1 usbcore
mac80211              148480  2 ath9k,ath9k_common
cfg80211              111088  4 ath9k,ath9k_common,ath,mac80211
compat_firmware_class     5152  0
compat                   432  0
crc_ccitt                976  1 ppp_async
arc4                     816  2
aes_generic            30256  2
deflate                 1360  0
ecb                     1328  2
cbc                     2016  0
pppoe                   8304  2
pppox                   1216  1 pppoe
ppp_generic            18848  7 ppp_async,pppoe,pppox
slhc                    4176  1 ppp_generic
leds_gpio               1456  0
button_hotplug          2544  0
gpio_buttons            1968  0
input_polldev           1360  1 gpio_buttons
input_core             16896  4 button_hotplug,gpio_buttons,input_polldev

Can someone advise me how to increase TTL?
Thanks

(Last edited by gogu_beb on 15 Feb 2010, 12:13)

Post #5
gogu_beb
15 Feb 2010, 17:25

Can you tell me how to recompile with that patch please.
What are the steps to compile the patch
Thanks

(Last edited by gogu_beb on 15 Feb 2010, 17:27)

Post #6
obsy
15 Feb 2010, 17:57

Full system with patch, not just a patch.

Post #7
obsy
15 Feb 2010, 18:18

patch -p0 < 100-ttl_fixes.patch

in the main source directory

Post #8
HuTPaT
30 Oct 2010, 20:03

The patch works great on backfire 10.03, but gives some errors on trunk version.
If someone can help ...

Post #9
dash17291
29 Nov 2011, 14:06

The TTL target is still not included in Backfire 10.03.1-RC5...

I'm unhappy.

The discussion might have continued from here.