Linux - Networking This forum is for any issue related to networks or networking.
Notices
Welcome to
LinuxQuestions.org , a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free.
Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
Are you new to LinuxQuestions.org? Visit the following links:
Site Howto |
Site FAQ |
Sitemap |
Register Now
If you have any problems with the registration process or your account login, please
contact us . If you need to reset your password,
click here .
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a
virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month.
Click here for more info.
#1
Member
Registered: Feb 2011
Posts: 56
Rep:
Iptables DNS Resolve Problem....in CHROOT
Hi Everyone
i am trying to execute the the iptables rule
iptables -t mangle -I PREROUTING -d google.com -j ACCEPT
its give error...
Code:
[root@manage /root]#chroot /var/iptablespackaging/ sbin/iptables -t mangle -I PREROUTING -d google.com -j ACCEPT
iptables v1.4.10: host/network `google.com' not found
Try `iptables -h' or 'iptables --help' for more information.
for that my DNS is also correct
Code:
[root@manage /root]# vi /etc/resolv.conf
nameserver 203.88.135.194
nameserver 127.0.0.1
MY ALL IPTABLES RULES IS WORKING BUT just this rule is not going to work...
i have take STRACE command output...
Code:
[root@manage /root]# chroot /var/iptablespackaging/ sbin/iptables -t mangle -I PREROUTING -d google.com -j ACCEPT
iptables v1.4.10: host/network `google.com' not found
Try `iptables -h' or 'iptables --help' for more information.
[root@manage /root]# strace chroot /var/iptablespackaging/ sbin/iptables -t mangle -I PREROUTING -d google.com -j ACCEPT
execve("/usr/sbin/chroot", ["chroot", "/var/iptablespackaging/", "sbin/iptables", "-t", "mangle", "-I", "PREROUTING", "-d", "google.com", "-j", "ACCEPT"], [/* 19 vars */]) = 0
uname({sys="Linux", node="manage", ...}) = 0
brk(0) = 0x804b000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb78ad000
open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8840, ...}) = 0
old_mmap(NULL, 8840, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb78aa000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 \304\1\0004\0\0\0"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0755, st_size=5737218, ...}) = 0
old_mmap(NULL, 1267240, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xb7774000
mprotect(0xb78a0000, 38440, PROT_NONE) = 0
old_mmap(0xb78a0000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x12b000) = 0xb78a0000
old_mmap(0xb78a6000, 13864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb78a6000
close(3) = 0
munmap(0xb78aa000, 8840) = 0
brk(0) = 0x804b000
brk(0x804b028) = 0x804b028
brk(0x804c000) = 0x804c000
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2601, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb78ac000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2601
read(3, "", 4096) = 0
close(3) = 0
munmap(0xb78ac000, 4096) = 0
open("/usr/lib/locale/en_US/LC_IDENTIFICATION", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=370, ...}) = 0
old_mmap(NULL, 370, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb78ac000
close(3) = 0
open("/usr/lib/locale/en_US/LC_MEASUREMENT", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=28, ...}) = 0
old_mmap(NULL, 28, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb78ab000
close(3) = 0
open("/usr/lib/locale/en_US/LC_TELEPHONE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=64, ...}) = 0
old_mmap(NULL, 64, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb78aa000
close(3) = 0
open("/usr/lib/locale/en_US/LC_ADDRESS", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=160, ...}) = 0
old_mmap(NULL, 160, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7773000
close(3) = 0
open("/usr/lib/locale/en_US/LC_NAME", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=82, ...}) = 0
old_mmap(NULL, 82, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7772000
brk(0x804d000) = 0x804d000
close(3) = 0
open("/usr/lib/locale/en_US/LC_PAPER", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=39, ...}) = 0
old_mmap(NULL, 39, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7771000
close(3) = 0
open("/usr/lib/locale/en_US/LC_MESSAGES", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
close(3) = 0
open("/usr/lib/locale/en_US/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=57, ...}) = 0
old_mmap(NULL, 57, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7770000
close(3) = 0
open("/usr/lib/locale/en_US/LC_MONETARY", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=291, ...}) = 0
old_mmap(NULL, 291, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb776f000
close(3) = 0
open("/usr/lib/locale/en_US/LC_COLLATE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=21499, ...}) = 0
old_mmap(NULL, 21499, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7769000
close(3) = 0
open("/usr/lib/locale/en_US/LC_TIME", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2456, ...}) = 0
old_mmap(NULL, 2456, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7768000
close(3) = 0
open("/usr/lib/locale/en_US/LC_NUMERIC", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=59, ...}) = 0
old_mmap(NULL, 59, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7767000
close(3) = 0
open("/usr/lib/locale/en_US/LC_CTYPE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=173408, ...}) = 0
old_mmap(NULL, 173408, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb773c000
close(3) = 0
chroot("/var/iptablespackaging/") = 0
chdir("/") = 0
execve("sbin/iptables", ["sbin/iptables"..., "-t"..., "mangle"..., "-I"..., "PREROUTING"..., "-d"..., "google.com"..., "-j"..., "ACCEPT"...], [/* 19 vars */]) = 0
brk(0) = 0x809c000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb776c000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/i686/sse2/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/tls/i686/sse2", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/i686/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/tls/i686", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/sse2/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/tls/sse2", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/tls", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/i686/sse2/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/i686/sse2", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/i686/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/i686", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/sse2/libip4tc.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/sse2", 0xbf99ca78) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libip4tc.so.0", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\r\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=68168, ...}) = 0
mmap2(NULL, 21252, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7766000
mmap2(0xb776b000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5) = 0xb776b000
close(3) = 0
open("/usr/local/lib/libxtables.so.5", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@\31\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=64549, ...}) = 0
mmap2(NULL, 26720, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb775f000
mmap2(0xb7765000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6) = 0xb7765000
close(3) = 0
open("/usr/local/lib/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/sse2/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/i686/sse2", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/i686", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/tls/sse2/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/sse2", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/tls/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/i686/sse2/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/i686/sse2", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/i686/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/i686", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/sse2/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/sse2", 0xbf99ca40) = -1 ENOENT (No such file or directory)
open("/lib/libm.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`\364K\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=206204, ...}) = 0
mmap2(0x4bc000, 159872, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4bc000
mmap2(0x4e2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x25) = 0x4e2000
close(3) = 0
open("/usr/local/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\v6\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1799176, ...}) = 0
mmap2(0x34a000, 1505576, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x34a000
mmap2(0x4b4000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16a) = 0x4b4000
mmap2(0x4b7000, 10536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4b7000
close(3) = 0
open("/usr/local/lib/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`jN\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=20464, ...}) = 0
mmap2(0x4e6000, 16500, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4e6000
mmap2(0x4e9000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2) = 0x4e9000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb775e000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb775d000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb775d6c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0x4e9000, 4096, PROT_READ) = 0
mprotect(0x4b4000, 8192, PROT_READ) = 0
mprotect(0x4e2000, 4096, PROT_READ) = 0
mprotect(0x346000, 4096, PROT_READ) = 0
brk(0) = 0x809c000
brk(0x80bd000) = 0x80bd000
open("/usr/local/libexec/xtables/libxt_standard.so", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\3\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=8723, ...}) = 0
mmap2(NULL, 6032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb775b000
mmap2(0xb775c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xb775c000
close(3) = 0
open("/etc/nsswitch.conf", O_RDONLY) = -1 ELOOP (Too many levels of symbolic links)
open("/usr/local/lib/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/i686/sse2/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/i686/sse2", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/i686/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/i686", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/sse2/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/sse2", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/i686/sse2/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/i686/sse2", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/i686/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/i686", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/sse2/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/sse2", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/lib/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib", 0xbf99c594) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libnss_files.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0000\32\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=55540, ...}) = 0
mmap2(NULL, 49864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb774e000
mmap2(0xb7759000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa) = 0xb7759000
close(3) = 0
mprotect(0xb7759000, 4096, PROT_READ) = 0
getpid() = 12441
open("/etc/resolv.conf", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=47, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb774d000
read(3, "nameserver\t203.88.135.194\nnamese"..., 4096) = 47
read(3, "", 4096) = 0
close(3) = 0
munmap(0xb774d000, 4096) = 0
uname({sys="Linux", node="manage", ...}) = 0
open("/etc/networks", O_RDONLY|0x80000 /* O_??? */) = -1 ENOENT (No such file or directory)
socket(PF_FILE, 0x80801 /* SOCK_??? */, 0) = 3
connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(3) = 0
socket(PF_FILE, 0x80801 /* SOCK_??? */, 0) = 3
connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(3) = 0
open("/etc/nsswitch.conf", O_RDONLY) = -1 ELOOP (Too many levels of symbolic links)
open("/etc/host.conf", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/hosts", O_RDONLY|0x80000 /* O_??? */) = -1 ELOOP (Too many levels of symbolic links)
write(2, "iptables v1.4.10: ", 18iptables v1.4.10: ) = 18
write(2, "host/network `google.com\' not fo"..., 35host/network `google.com' not found) = 35
write(2, "\n", 1
) = 1
write(2, "Try `iptables -h\' or \'iptables -"..., 61Try `iptables -h' or 'iptables --help' for more information.
) = 61
exit_group(2) = ?
Please tell me the solution....
#2
Member
Registered: Mar 2008
Distribution: slackware
Posts: 175
Rep:
Can you actually resolve google.com in your chroot environment? If so can you ping it?
Try:
Quote:
# host google.com
If these don't work then there's your answer.
Also examining your strace output it looks like lots of files/libraries are not found which probably explains why dns resolution may not be working.
Last edited by fancylad; 10-12-2011 at 05:59 PM .
#3
Member
Registered: Feb 2011
Posts: 56
Original Poster
Rep:
thank you sir.......your hint works......i catch the problem...i miss two libraries ....now its works fine.....
All times are GMT -5. The time now is 03:29 AM .
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know .
